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1. Bacillus spore awakening: recent discoveries and technological developments

Author:
Harper, Willie F,   et al.   ; Xing, Yun;     Show all 2 Author
Source:
Current opinion in biotechnology 2020 v.64 pp. 110-115
ISSN:
0958-1669
Subject:
Bacillus (bacteria); bacterial spores; engineering; metabolomics; mining; protein synthesis; spore germination
Abstract:
... Elucidating the mechanistic basis of spore germination and outgrowth remains a difficult challenge with crucial implications in the numerous scientific and engineering disciplines. Omics studies have revealed numerous new biochemical insights and single-spore studies link molecular insights directly with spore heterogeneity behaviors. This field is expected to advance at greater speed with the app ...
DOI:
10.1016/j.copbio.2019.12.024

2. Valorization of farm pond biomass as fertilizer for reducing basin-scale phosphorus losses

Author:
Harris, Willie G.,   et al.   ; Shukla, Asmita; Shukla, Sanjay; Hodges, Alan W.;     Show all 4 Authors
Source:
The Science of the total environment 2020 v.720 pp. 137403
ISSN:
0048-9697
Subject:
agricultural soils; biomass; composting; composts; constructed wetlands; cropping systems; crops; drainage; economic feasibility; economic valuation; environmental programs; farms; fresh produce; harvesting; phosphorus; pollution load; recycling; soil quality; stormwater; sugarcane; surface water; watersheds
Abstract:
... Long-term fertilizer phosphorus (P) inputs are causing phosphorous saturation of agricultural soils globally. The saturation is spreading to the edge-of-the-farm stormwater detention systems (SDSs) from where the legacy P is potentially being released to downstream surface waters. We use site-specific and literature data for P-saturated SDSs, to develop and evaluate the biogeochemical and economic ...
DOI:
10.1016/j.scitotenv.2020.137403

3. Adsorption of bacteriophage MS2 to colloids: Kinetics and particle interactions

Author:
Harper, Willie F.,   et al.   ; Xing, Yun; Ellis, Ashlee; Magnuson, Matthew;     Show all 4 Authors
Source:
Colloids and surfaces 2020 v.585 pp. 124099
ISSN:
0927-7757
Subject:
adsorption; bacteriophages; colloids; fiberglass; fluorescence; kaolinite; models; wastes; wastewater treatment; water quality; water reuse
Abstract:
... Virus adsorption to colloidal particles is an important issue in the water quality community. Namely, if viruses can quickly and strongly associate to colloids, this can potentially lead to significant implications for the management of biohazardous wastes at water reclamation facilities. This research evaluated the adsorption of bacteriophage MS2 to colloidal suspensions of kaolinite (KAO) and fi ...
DOI:
10.1016/j.colsurfa.2019.124099

4. Exploring Forest Change Spatial Patterns in Papua New Guinea: A Pilot Study in the Bumbu River Basin

Author:
Doaemo, Willie,   et al.   ; Mohan, Midhun; Adrah, Esmaeel; Srinivasan, Shruthi; Dalla Corte, Ana Paula;     Show all 5 Authors
Source:
Land 2020 v.9 no.9
ISSN:
2073-445X
Subject:
Internet; agricultural land; biodiversity; carbon; deforestation; environmental factors; forest ecosystems; geographic information systems; indigenous peoples; land cover; land use and land cover maps; land use change; livelihood; logging; markets; rain forests; remote sensing; satellites; surveys; urban areas; urbanization; watersheds; Papua New Guinea
Abstract:
... Papua New Guinea is a country in Oceania that hosts unique rain forests and forest ecosystems which are crucial for sequestering atmospheric carbon, conserving biodiversity, supporting the livelihood of indigenous people, and underpinning the timber market of the country. As a result of urban sprawl, agricultural expansion, and illegal logging, there has been a tremendous increase in land-use land ...
DOI:
10.3390/land9090282

5. Synthesis and evaluation of a diethylammonio-propylsulfate amphoteric ionic column for the high-performance liquid chromatography-mass spectrometric separation and detection of amino acids

Author:
Hinze, Willie L.,   et al.   ; Takagai, Yoshitaka; Yamazoe, Kayami; Sato, Tsuneji; Oonuma, Chisa; Butsugan, Michio;     Show all 6 Authors
Source:
Journal of chromatography 2020 v.1621 pp. 461033
ISSN:
0021-9673
Subject:
amino acids; detection limit; high performance liquid chromatography; isoelectric point; mass spectrometry; solvents; temperature
Abstract:
... A diethylammonio-propylsulfate amphoteric ionic resin was synthesized and employed as the stationary phase for high-performance liquid chromatography-mass spectrometry (LC–MS) separation and detection of amino acids. The influence of experimental conditions such as mobile phase composition, column length and temperature upon the amino acid separations was evaluated. However, temperature, addition ...
DOI:
10.1016/j.chroma.2020.461033

6. A Recently Discovered Maize Polerovirus Causes Leaf Reddening Symptoms in Several Maize Genotypes and is Transmitted by Both the Corn Leaf Aphid (Rhopalosiphum maidis) and the Bird Cherry-Oat Aphid (Rhopalosiphum padi)

Author:
Willie, Kristen,   et al.   ; Stewart, Lucy R.; Todd, Jane; Massawe, Deogracious; Khatri, Nitika;     Show all 5 Authors
Source:
Plant disease 2020 v.104 no.6 pp. 1589-1592
ISSN:
0191-2917
Subject:
Maize chlorotic mottle virus; Nicotiana benthamiana; Polerovirus; Potyviridae; Rhopalosiphum maidis; Rhopalosiphum padi; Zea mays; corn; genotype; insect vectors; leaves; mixed infection; necrosis; surveys; viruses
Abstract:
... A maize-infecting polerovirus variously named maize yellow dwarf virus RMV2 (MYDV-RMV2) and maize yellow mosaic virus (MaYMV) has been discovered and previously described in East Africa, Asia, and South America. It was identified in virus surveys in these locations instigated by outbreaks of maize lethal necrosis (MLN), known to be caused by coinfections of unrelated maize chlorotic mottle virus ( ...
DOI:
10.1094/PDIS-09-19-2054-SC

7. Foliar versus root exposure of AgNPs to lettuce: Phytotoxicity, antioxidant responses and internal translocation

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Wu, Juan; Wang, Guiyin; Vijver, Martina G.; Bosker, Thijs;     Show all 5 Authors
Source:
Environmental pollution 2020 v.261 pp. 114117
ISSN:
0269-7491
Subject:
Lactuca sativa; antioxidant activity; exposure pathways; food safety; humans; ions; lettuce; nanoparticles; nanosilver; nutrient transport; phytotoxicity; plant tissues; risk; silver
Abstract:
... Whether toxicity of silver nanoparticles (AgNPs) to organisms originates from the nanoparticles themselves or from the dissolved Ag-ions is still debated, with the majority of studies claiming that extracellular release of Ag-ions is the main cause of toxicity. The objective of this study was to determine the contributions of both particles and dissolved ions to toxic responses, and to better unde ...
DOI:
10.1016/j.envpol.2020.114117

8. The fate and toxicity of Pb-based perovskite nanoparticles on soil bacterial community: Impacts of pH, humic acid, and divalent cations

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Zhai, Yujia; Wang, Zhuang; Wang, Guiyin; Vijver, Martina G.;     Show all 5 Authors
Source:
Chemosphere 2020 v.249 pp. 126564
ISSN:
0045-6535
Subject:
bacterial communities; cations; environmental factors; humic acids; nanoparticles; pH; recycling; soil bacteria; solar cells; toxicity; toxicity testing; wastes
Abstract:
... Pb-based perovskite nanoparticles (PbPNPs) are amongst others used within highly efficient solar cells. PbPNPs can be released into the environment during their production, recycling or waste processing. In this study we investigated the fate and toxicity of PbPNPs on soil bacterial community under simulated natural environmental conditions across a range of pH, humic acid, and divalent cation con ...
DOI:
10.1016/j.chemosphere.2020.126564

9. Drivers affecting mammal community structure and functional diversity under varied conservation efforts in a tropical rainforest in Cameroon

Author:
Willie, J.,   et al.   ; Laméris, D. W.; Tagg, N.; Kuenbou, J. K.; Sterck, E. H. M.;     Show all 5 Authors
Source:
Animal conservation 2020 v.23 no.2 pp. 182-191
ISSN:
1367-9430
Subject:
anthropogenic activities; community structure; ecological footprint; functional diversity; information sources; mammals; species richness; tropical rain forests; Cameroon
Abstract:
... As well as leading to a loss of biodiversity (i.e. species richness and abundance), human activities also affect ecosystem functioning. Documenting how the suite of ecological roles changes following disturbance provides a complementary source of information for conservation management. To this end, we measured mammal diversity in terms of community structure (i.e. abundance, composition and speci ...
DOI:
10.1111/acv.12526

10. Maize lethal necrosis viruses and other maize viruses in Rwanda

Author:
Willie, Kristen,   et al.   ; Asiimwe, Theodore; Stewart, Lucy R.; Massawe, Deogracious P.; Kamatenesi, Jovia; Redinbaugh, Margaret G.;     Show all 6 Authors
Source:
Plant pathology 2020 v.69 no.3 pp. 585-597
ISSN:
0032-0862
Subject:
Barley yellow dwarf virus; Betaflexiviridae; Chrysovirus; Maize chlorotic mottle virus; Maize streak virus; Polerovirus; Sugarcane mosaic virus; Totiviridae; Zea mays; corn; crop production; genetic variation; high-throughput nucleotide sequencing; mixed infection; necrosis; reverse transcriptase polymerase chain reaction; viruses; Kenya; Rwanda
Abstract:
... Maize lethal necrosis (MLN) is emergent in East Africa, first reported in 2011 in Kenya, and is devastating to maize production in the region. MLN is caused by coinfection of maize with the emergent maize chlorotic mottle virus (MCMV) and any of several maize‐infecting potyviruses endemic in East Africa and worldwide. Here, we examined the distribution of MCMV and sugarcane mosaic virus (SCMV), th ...
DOI:
10.1111/ppa.13134

11. Prediction of octanol-air partition coefficients for PCBs at different ambient temperatures based on the solvation free energy and the dimer ratio

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Li, Wanran; Ding, Guanghui; Gao, Hong; Zhuang, Yuting; Gu, Xiaoyue;     Show all 6 Authors
Source:
Chemosphere 2020 v.242 pp. 125246
ISSN:
0045-6535
Subject:
air; ambient temperature; chemical structure; geometry; models; octanol; partition coefficients; persistent organic pollutants; polychlorinated biphenyls; prediction; solvation energy; thermodynamics
Abstract:
... Temperature-dependent octanol-air partition coefficients (KOA) are of great importance in assessing the environmental behavior and fate of persistent organic pollutants including polychlorinated biphenyls (PCBs). Due to the tremendous amounts of time, effort and cost needed for the experimental determination of KOA, it is desirable to develop a rapid and precise predictive method to estimate KOA j ...
DOI:
10.1016/j.chemosphere.2019.125246

12. A review of recent advances towards the development of QSAR models for toxicity assessment of ionic liquids

Author:
Peijnenburg, Willie,   et al.   ; Abramenko, Natalia; Kustov, Leonid; Metelytsia, Larysa; Kovalishyn, Vasyl; Tetko, Igor;     Show all 6 Authors
Source:
Journal of hazardous materials 2020 v.384 pp. 121429
ISSN:
0304-3894
Subject:
biodegradability; computational methodology; ionic liquids; prediction; quantitative structure-activity relationships; toxicity
Abstract:
... •Ionic liquids (ILs) are considered as an alternative to traditional organic solvents due to their unique physical and chemical properties. On the one hand, they have promising solvating characteristics, on the other hand, they are considered as environmentally friendly “green” solvents. Recent studies of ILs toxicity however questioned the safety of ILs.•Assessment of the toxicity of ILs based on ...
DOI:
10.1016/j.jhazmat.2019.121429

13. Variability in fish bioconcentration factors: Influences of study design and consequences for regulation

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Wassenaar, Pim N.H.; Verbruggen, Eric M.J.; Cieraad, Ellen; Vijver, Martina G.;     Show all 5 Authors
Source:
Chemosphere 2020 v.239 pp. 124731
ISSN:
0045-6535
Subject:
bioaccumulation factor; databases; experimental design; fish; lipids; molecular weight; polycyclic aromatic hydrocarbons; uncertainty; variance
Abstract:
... The fish bioconcentration factor (BCF) is an important aspect within bioaccumulation assessments. Several factors have been suggested to influence BCF values – including species, developmental stage, mixture exposure, and calculation method. However, their exact contribution to variance in BCF values is unknown. Within this study we assessed the relative impact of these test characteristics on BCF ...
DOI:
10.1016/j.chemosphere.2019.124731

14. Confocal measurement of microplastics uptake by plants

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Li, Lianzhen; Luo, Yongming; Li, Ruijie; Yang, Jie; Zhou, Qian;     Show all 6 Authors
Source:
MethodsX 2020 v.7 pp. 100750
ISSN:
2215-0161
Subject:
agricultural soils; aquatic organisms; confocal laser scanning microscopy; encapsulation; fluorescent dyes; image analysis; microbeads; microplastics; nanoparticles; plant tissues; plants (botany); polystyrenes; scanning electron microscopy; transmission electron microscopy
Abstract:
... Microplastics (MPs, plastics 100 nm–5 mm in diameter) are estimated to accumulate in agricultural soils in quantities that exceed the total MP burden in ocean waters. Despite a wealth of information relating to the accumulation of MPs in aquatic species, there is little information on the uptake of MPs by terrestrial plants. Information about location of MPs in plant tissues is critical to underst ...
DOI:
10.1016/j.mex.2019.11.023
PubMed:
32021814
PubMed Central:
PMC6993004

15. Digital mapping of soil carbon fractions with machine learning

Author:
Harris, Willie G.,   et al.   ; Keskin, Hamza; Grunwald, Sabine;     Show all 3 Authors
Source:
Geoderma 2019 v.339 pp. 40-58
ISSN:
0016-7061
Subject:
bulk density; carbon; carbon sinks; climatic factors; computer-aided mapping; georeferencing; kriging; land use; least squares; models; motivation; prediction; soil; soil carbon; soil surveys; support vector machines; topography; Florida
Abstract:
... Our understanding of the spatial distribution of soil carbon (C) pools across diverse land uses, soils, and climatic gradients at regional scale is still limited. Research in digital soil mapping and modeling that investigates the interplay between (i) soil C pools and environmental factors (“deterministic trend model”) and (ii) stochastic, spatially dependent variations in soil C fractions (“stoc ...
DOI:
10.1016/j.geoderma.2018.12.037
CHORUS:
10.1016/j.geoderma.2018.12.037

16. Improved continuous fumaric acid production with immobilised Rhizopus oryzae by implementation of a revised nitrogen control strategy

Author:
Nicol, Willie,   et al.   ; Naude, Andre;     Show all 2 Author
Source:
New biotechnology 2018 v.44 pp. 13-22
ISSN:
1871-6784
Subject:
Rhizopus oryzae; biomass; cell respiration; ethanol production; fermentation; fumaric acid; mycelium; nitrogen; polypropylenes; urea
Abstract:
... A novel fermentation system was employed whereby the mycelial mat of Rhizopus oryzae was attached to a polypropylene tube. Batch operation was used for growth, while continuous operation was employed during the fumaric acid production phase. A clear decrease in respiration, fumaric acid (FA) and ethanol production was observed when zero nitrogen was fed in the production phase, with FA productivit ...
DOI:
10.1016/j.nbt.2018.02.012

17. Malic acid production through the whole-cell hydration of fumaric acid with immobilised Rhizopus oryzae

Author:
Nicol, Willie,   et al.   ; Naude, Andre;     Show all 2 Author
Source:
Biochemical engineering journal 2018 v.137 pp. 152-161
ISSN:
1369-703X
Subject:
Rhizopus oryzae; Saccharomyces cerevisiae; biomass; biotransformation; byproducts; fumaric acid; half life; malic acid; models; sodium
Abstract:
... The production of malic acid from fumaric acid using Rhizopus oryzae as a whole-cell bioconversion process was investigated. Biomass preparation and immobilisation were more straightforward compared with Bravibacterium flavum and Saccharomyces cerevisiae. Anaerobic operation greatly increased the process half-life, which also increased with an increasing sodium concentration in the medium. A model ...
DOI:
10.1016/j.bej.2018.05.022

18. Integration of subcellular partitioning and chemical forms to understand silver nanoparticles toxicity to lettuce (Lactuca sativa L.) under different exposure pathways

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Li, Wei-Qi; Qing, Ting; Li, Cheng-Cheng; Li, Feng; Ge, Fei; Fei, Jun-Jie;     Show all 7 Authors
Source:
Chemosphere 2020 v.258 pp. 127349
ISSN:
0045-6535
Subject:
Lactuca sativa; bioaccumulation; exposure pathways; food security; lettuce; nanosilver; phytomass; phytotoxicity; risk assessment; silver
Abstract:
... The current understanding of the biological impacts of silver nanoparticles (AgNPs) is restricted to the direct interactions of the particles with biota. Very little is known about their intracellular fate and subsequent toxic consequences. In this research we investigated the uptake, internal fate (i,e., Ag subcellular partitioning and chemical forms), and phytotoxicity of AgNPs in lettuce follow ...
DOI:
10.1016/j.chemosphere.2020.127349

19. Contribution of Non-Timber Forest Product Valorisation to the Livelihood Assets of Local People in the Northern Periphery of the Dja Faunal Reserve, East Cameroon

Author:
Willie, Jacob,   et al.   ; Epanda, Manfred Aimé; Tsafack Donkeng, Romaric; Ngo Nonga, Fidoline; Frynta, Daniel; Adi, Nwafi Ngeayi; Speelman, Stijn;     Show all 7 Authors
Source:
Forests 2020 v.11 no.9
ISSN:
1999-4907
Subject:
assets; data collection; drying; extractors; factor analysis; fauna; households; income; livelihood; markets; nontimber forest products; prediction; structural equation modeling; tropics; villages; Cameroon
Abstract:
... A large community of scientists has demonstrated that millions of people located in tropical zones derive a significant proportion of their livelihoods from the extraction of non-timber forest products (NTFPs). Despite these results, questions remain as to whether the valorisation of NTFPs can sustainably contribute to the improvement of the livelihood assets of the extractors. This study therefor ...
DOI:
10.3390/f11091019

20. Assessing the sustainability of emerging technologies: A probabilistic LCA method applied to advanced photovoltaics

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Blanco, Carlos F.; Cucurachi, Stefano; Guinée, Jeroen B.; Vijver, Martina G.; Trattnig, Roman; Heijungs, Reinout;     Show all 7 Authors
Source:
Journal of cleaner production 2020 v.259 pp. 120968
ISSN:
0959-6526
Subject:
case studies; environmental assessment; manufacturing; models; photovoltaic cells; probability distribution; product system; solar energy; uncertainty; uncertainty analysis; variance
Abstract:
... A key source of uncertainty in the environmental assessment of emerging technologies is the unpredictable manufacturing, use, and end-of-life pathways a technology can take as it progresses from lab to industrial scale. This uncertainty has sometimes been addressed in life cycle assessment (LCA) by performing scenario analysis. However, the scenario-based approach can be misleading if the probabil ...
DOI:
10.1016/j.jclepro.2020.120968

21. Development of a quantitative structure-activity relationship model for mechanistic interpretation and quantum yield prediction of singlet oxygen generation from dissolved organic matter

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Zhao, Jianchen; Zhou, Yangjian; Li, Chao; Xie, Qing; Chen, Jingwen; Chen, Guangchao; Zhang, Ya-nan; Qu, Jiao;     Show all 9 Authors
Source:
The Science of the total environment 2020 v.712 pp. 136450
ISSN:
0048-9697
Subject:
dissolved organic matter; dissolved oxygen; fulvic acids; hydrophobicity; models; moieties; prediction; quantitative structure-activity relationships; rivers; singlet oxygen; viruses; yield forecasting
Abstract:
... Singlet oxygen (¹O₂) is capable of degrading organic contaminants and inducing cell damage and inactivation of viruses. It is mainly generated through the interaction of dissolved oxygen with excited triplet states of dissolved organic matter (DOM) in natural waters. The present study aims at revealing the underlying mechanism of ¹O₂ generation and providing a potential tool for predicting the qua ...
DOI:
10.1016/j.scitotenv.2019.136450

22. Interactions of CeO2 nanoparticles with natural colloids and electrolytes impact their aggregation kinetics and colloidal stability

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Li, Xing; He, Erkai; Zhang, Miaoyue; Liu, Yang; Song, Lan; Cao, Xinde; Zhao, Ling; Qiu, Hao;     Show all 9 Authors
Source:
Journal of hazardous materials 2020 v.386 pp. 121973
ISSN:
0304-3894
Subject:
adsorption; calcium; calcium chloride; ceric oxide; coagulation; colloids; electrostatic interactions; goethite; humic acids; ions; kaolin; light scattering; nanoparticles; sodium chloride; spectroscopy
Abstract:
... The aggregation kinetics and colloidal stability of CeO₂-NPs in the presence of monovalent or divalent electrolytes, as well as inorganic (kaolin and goethite) and organic (humic acid, HA) colloids were evaluated using time-resolved dynamic light scattering, advanced spectroscopic tools, and theoretical calculations. Critical coagulation concentrations for CeO₂-NPs were generally lower in CaCl₂ th ...
DOI:
10.1016/j.jhazmat.2019.121973

23. A cross-sectional epidemiological investigation of nontuberculous mycobacteria of public health importance in slaughter camels in Samburu County, Kenya

Author:
Githui, Willie Abela,   et al.   ; Asaava, Lucas Luvai A.; Gicheru, Michael M.; Mwangi, Moses; Mwangi, Edwin; Juma, Ernest; Moraa, Ruth; Halakhe, Adan;     Show all 8 Authors
Source:
Tropical animal health and production 2020 v.52 no.2 pp. 661-669
ISSN:
0049-4747
Subject:
Bacilli; Mycobacterium fortuitum; Mycobacterium gordonae; Mycobacterium intracellulare; Mycobacterium marinum; Mycobacterium scrofulaceum; Mycobacterium szulgai; camels; epidemiological studies; lungs; lymph nodes; meat inspection; public health; slaughter; slaughterhouses; staining; tuberculosis; Germany; Kenya
Abstract:
... The diagnosis of tuberculosis (TB) in camels at slaughter houses heavily relies on post mortem (PM) meat inspection to detect granulomatous lesions; however, the sensitivity of this technique is not perfect. The objective of this study was to isolate and characterize mycobacteria associated with suspect TB pathological lesions at PM. At PM, 1600 camels were examined in two county slaughterhouses. ...
DOI:
10.1007/s11250-019-02054-2

24. Development of Empirical Bioavailability Models for Metals

Author:
Peijnenburg, Willie,   et al.   ; Brix, Kevin V.; DeForest, David K.; Tear, Lucinda; Peters, Adam; Middleton, Ellie T.; Erickson, Russ;     Show all 7 Authors
Source:
Environmental toxicology and chemistry 2020 v.39 no.1 pp. 85-100
ISSN:
0730-7268
Subject:
bioavailability; case studies; chemical speciation; data collection; empirical models; environmental management; experimental design; linear models; mechanistic models; metals; prediction; statistical analysis; toxicity
Abstract:
... Recently, there has been renewed interest in the development and use of empirical models to predict metal bioavailability and derive protective values for aquatic life. However, there is considerable variability in the conceptual and statistical approaches with which these models have been developed. In the present study, we review case studies of empirical bioavailability model development, evalu ...
DOI:
10.1002/etc.4570

25. A DFT/TDDFT study on the mechanisms of direct and indirect photodegradation of tetrabromobisphenol A in water

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Wang, Se; Wang, Zhuang; Hao, Ce;     Show all 4 Authors
Source:
Chemosphere 2019 v.220 pp. 40-46
ISSN:
0045-6535
Subject:
cyclization reactions; density functional theory; endothermy; flame retardants; geometry; heat production; hydroxyl radicals; photolysis; risk assessment; singlet oxygen
Abstract:
... Tetrabromobisphenol A (TBBPA) is the most widely used commercial brominated flame retardant. However, the mechanisms underlying the photodegradation of TBBPA remain unclear. Here we use density functional theory and time-dependent density functional theory to examine the photodegradation of the two species of TBBPA in water: TBBPA (neutral form) and TBBPA⁻ (anionic form). The study includes direct ...
DOI:
10.1016/j.chemosphere.2018.12.087

26. Identification of the alternative oxidase gene and its expression in the copepod Tigriopus californicus

Author:
Cygelfarb, Willie,   et al.   ; Tward, Carly E.; Singh, Jaspreet; McDonald, Allison E.;     Show all 4 Authors
Source:
Comparative biochemistry and physiology 2019 v.228 pp. 41-50
ISSN:
1096-4959
Subject:
DNA; Tigriopus californicus; animals; bioinformatics; coasts; cold; databases; electron transfer; genes; heat stress; messenger RNA; mitochondria; models; oxidation; oxidative phosphorylation; oxidoreductases; oxygen; rearing; temperature; North America
Abstract:
... In addition to the typical electron transport system (ETS) in animal mitochondria responsible for oxidative phosphorylation, in some species there exists an alternative oxidase (AOX) pathway capable of catalyzing the oxidation of ubiquinol and the reduction of oxygen to water. The discovery of AOX in animals is recent and further investigations into its expression, regulation, and physiological ro ...
DOI:
10.1016/j.cbpb.2018.11.003

27. The shuttling effects and associated mechanisms of different types of iron oxide nanoparticles for Cu(II) reduction by Geobacter sulfurreducens

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Qiu, Hao; Xu, Hang; Xu, Zibo; Xia, Bing; Cao, Xinde; Du, Huihui; Zhao, Ling; Qiu, Rongliang; He, Erkai;     Show all 10 Authors
Source:
Journal of hazardous materials 2020 v.393 pp. 122390
ISSN:
0304-3894
Subject:
Geobacter sulfurreducens; X-ray absorption spectroscopy; bacteria; batteries; biotransformation; copper; copper nanoparticles; crystal structure; electron transfer; electrons; ferrihydrite; goethite; hematite; magnetite; toxicity
Abstract:
... Iron oxide nanoparticles (IONPs), commonly occurring in soils, aquifers and subsurface sediments, may serve as important electron shuttles for the biotransformation of coexisting toxic metals. Here, we explored the impact of different IONPs (low-crystallinity goethite and ferrihydrite, high-crystallinity magnetite and hematite) on the reduction of Cu(II) by Geobacter sulfurreducens and the associa ...
DOI:
10.1016/j.jhazmat.2020.122390

28. The promoted dissolution of copper oxide nanoparticles by dissolved humic acid: Copper complexation over particle dispersion

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Liu, Siqian; Liu, Yang; Pan, Bo; He, Ying; Li, Bowen; Zhou, Dandan; Xiao, Yinlong; Qiu, Hao; Vijver, Martina G.;     Show all 10 Authors
Source:
Chemosphere 2020 v.245 pp. 125612
ISSN:
0045-6535
Subject:
adsorption; copper; cupric oxide; dissolved organic matter; humic acids; hydrodynamics; nanoparticles; surface area; zeta potential
Abstract:
... Humic substances are the dominant dissolved organic matter fraction in the aqueous phase of environmental media. They would inevitably react with chemicals released into the environment. The influence of dissolved humic acid (DHA) on the dissolution and dispersion of copper oxide nanoparticles (CuO NPs, 50 nm, 49.57 mg L⁻¹) was therefore investigated in the present study. In addition to dispersing ...
DOI:
10.1016/j.chemosphere.2019.125612

29. Disentanglement of the chemical, physical, and biological processes aids the development of quantitative structure-biodegradation relationships for aerobic wastewater treatment

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Nolte, Tom M.; Chen, Guangchao; van Schayk, Coen S.; Pinto-Gil, Kevin; Hendriks, A. Jan; Ragas, Ad M.J.;     Show all 7 Authors
Source:
The Science of the total environment 2020 v.708 pp. 133863
ISSN:
0048-9697
Subject:
acclimation; biodegradation; chemoinformatics; drugs; environmental assessment; herbicides; hydrolysis; ionization; models; organic compounds; risk assessment; sewage treatment; sludge; sorption; statistics; volatilization; wastewater treatment; Netherlands
Abstract:
... Attenuation of organic compounds in sewage treatment plants (STPs) is affected by a complex interplay between chemical (e.g. ionization, hydrolysis), physical (e.g. sorption, volatilization), and biological (e.g. biodegradation, microbial acclimation) processes. These effects should be accounted for individually, in order to develop predictive cheminformatics tools for STPs. Using measured data fr ...
DOI:
10.1016/j.scitotenv.2019.133863

30. Sustainable Forest Management Beyond the Timber-Oriented Status Quo: Transitioning to Co-production of Timber and Non-wood Forest Products—a Global Perspective

Author:
Sagona, Willie Cliffie John,   et al.   ; Sheppard, Jonathan P.; Chamberlain, James; Agúndez, Dolores; Bhattacharya, Prodyut; Chirwa, Paxie Wanangwa; Gontcharov, Andrey; Shen, Hai-long; Tadesse, Wubalem; Mutke, Sven;     Show all 10 Authors
Source:
Current forestry reports 2020 v.6 no.1 pp. 26-40
ISSN:
2198-6436
Subject:
ecosystem services; forest ecosystems; forest management; forests; governance; livelihood; nontimber forest products; property rights; public services and goods; supply chain; sustainable forestry; trade
Abstract:
... PURPOSE OF REVIEW: This review provides perspectives and insights of forest researchers from four continents representing a range of geo-regions, with examples from diverse and dynamic use of forest products that are undervalued and often misrepresented. A comprehensive discussion of the subject provides special attention to property, tenancy, public goods and access rights to non-wood forest prod ...
DOI:
10.1007/s40725-019-00107-1

31. Optimal markers for the identification of Colletotrichum species

Author:
Vieira, Willie Anderson dos Santos,   et al.   ; Bezerra, Priscila Alves; Silva, Anthony Carlos da; Veloso, Josiene Silva; Câmara, Marcos Paz Saraiva; Doyle, Vinson Patrick;     Show all 6 Authors
Source:
Molecular phylogenetics and evolution 2020 v.143 pp. 106694
ISSN:
1055-7903
Subject:
Bayesian theory; Colletotrichum; DNA barcoding; actin; chitin synthase; crops; genetic markers; glyceraldehyde-3-phosphate dehydrogenase; intergenic DNA; loci; monophyly; plant pathogenic fungi; ribosomal DNA; species identification; topology; tubulin; uncertainty
Abstract:
... Colletotrichum is among the most important genera of fungal plant pathogens. Molecular phylogenetic studies over the last decade have resulted in a much better understanding of the evolutionary relationships and species boundaries within the genus. There are now approximately 200 species accepted, most of which are distributed among 13 species complexes. Given their prominence on agricultural crop ...
DOI:
10.1016/j.ympev.2019.106694

32. Fumaric acid fermentation with immobilised Rhizopus oryzae: Quantifying time-dependent variations in catabolic flux

Author:
Nicol, Willie,   et al.   ; Naude, Andre;     Show all 2 Author
Source:
Process biochemistry 2017 v.56 pp. 8-20
ISSN:
1359-5113
Subject:
Rhizopus oryzae; dissolved oxygen; ethanol; ethanol production; fermentation; fermenters; fumaric acid; glucose; pH
Abstract:
... A novel fermenter system utilising immobilised Rhizopus oryzae is presented. The impact of dissolved oxygen (20%, 60% and 80%) and pH (4 and 5) was investigated. All fermentations exhibited three distinct phases. Phase A, at the start, was associated with no fumarate production, minimal respiration and ethanol as the major product. Phase B was characterised by the onset of fumarate production and ...
DOI:
10.1016/j.procbio.2017.02.027

33. First Documentation of Roost Use By Little Brown Myotis (Myotis lucifugus) On the North Coast of British Columbia

Author:
Willie, Megan,   et al.   ; Rowland, Eloise; Mullaley, Andrew;     Show all 3 Authors
Source:
Northwestern naturalist 2018 v.99 no.3 pp. 187-196
ISSN:
1051-1733
Subject:
Myotis lucifugus; adults; coasts; females; foraging; habitats; males; radio telemetry; residential areas; roosting behavior; British Columbia
Abstract:
... Roosts used by Little Brown Myotis (Myotis lucifugus) are not well documented among coastal habitats. Using radio telemetry, we obtained empirical evidence of roosting activity for Little Brown Myotis on the north coast of British Columbia. One non-reproductive adult female and 2 adult male Little Brown Myotis were found to use 4 unique roosting locations in the Prince Rupert area. Three of 4 conf ...
DOI:
10.1898/NWN18-02.1

34. Barley stripe mosaic virus (BSMV) as a virus-induced gene silencing vector in maize seedlings

Author:
Willie, Kristen,   et al.   ; Jarugula, Sridhar; Stewart, Lucy R.;     Show all 3 Authors
Source:
Virus genes 2018 v.54 no.4 pp. 616-620
ISSN:
0920-8569
Subject:
Barley stripe mosaic virus; Zea mays; barley; corn; cultivars; gene silencing; genes; genetic vectors; pathogenicity; seedlings; viruses; wheat
Abstract:
... Barley stripe mosaic virus (BSMV) was the first reported and still widely used virus-induced gene silencing (VIGS) vector for monocotyledons including wheat and barley. Despite BSMV’s reported infectivity on maize (Zea mays), the use of the virus as a vector in maize has not been optimized. Here, we assayed infectivity of BSMV in different maize cultivars by vascular puncture inoculation. Through ...
DOI:
10.1007/s11262-018-1569-9

35. Estimating site occupancy and detectability of the threatened partridge pigeon (Geophaps smithii) using camera traps

Author:
Rioli, Willie; Roberts, Willie,   et al.   ; Davies, Hugh F.; Puruntatameri, José; Kerinaiua, Colin; Kerinauia, Vivian; Womatakimi, Kim Brooks; Gillespie, Graeme R.; Murphy, Brett P.;     Show all 9 Authors
Source:
Austral ecology 2019 v.44 no.5 pp. 868-879
ISSN:
1442-9985
Subject:
biodiversity; burning; camera trapping; cameras; cats; feral animals; granivores; grazing; islands; landscapes; partridges; pigeons; predation; risk; savannas; Australia
Abstract:
... Since European settlement, many granivorous birds of northern Australia's savanna landscapes have declined. One such example, the partridge pigeon (Geophaps smithii), has suffered a significant range contraction, disappearing from at least half of its pre‐European range. Multiple factors have been implicated in this decline, including the loss of traditional Aboriginal burning practices, grazing b ...
DOI:
10.1111/aec.12755

36. Structure and cell viability analysis of Actinobacillus succinogenes biofilms as biocatalysts for succinic acid production

Author:
Nicol, Willie,   et al.   ; Mokwatlo, Sekgetho Charles;     Show all 2 Author
Source:
Biochemical engineering journal 2017 v.128 pp. 134-140
ISSN:
1369-703X
Subject:
Actinobacillus succinogenes; biocatalysts; biofilm; cell viability; computer software; confocal laser scanning microscopy; gauges; image analysis; phenotype; scanning electron microscopy; succinic acid; surface area
Abstract:
... Biofilms of Actinobacillus succinogenes have demonstrated exceptional capabilities as biocatalysts for high productivity, titre, and yield production of succinic acid. This work gauges the effectiveness of these biofilms through analysis of the structure and cell viability of biofilms by using confocal scanning laser microscopy, scanning electron microscopy and image analysis software. The structu ...
DOI:
10.1016/j.bej.2017.09.013

37. Surface growth stress and wood properties of 8-year-old planted Big-leaf mahogany (Swietenia macrophylla King) from different landrace provenances and trial sites in the Philippines

Author:
Abasolo, Willie P.,   et al.   ; Gilbero, Dennis M.; Matsuo-Ueda, Miyuki; Yamamoto, Hiroyuki;     Show all 4 Authors
Source:
Journal of wood science 2019 v.65 no.1 pp. 35
ISSN:
1435-0211
Subject:
Swietenia macrophylla; biomass; carbon dioxide; cell walls; farmers; global warming; juvenile wood; landraces; lumber; plantations; planting; progeny; provenance; raw materials; tension wood; tree and stand measurements; trees; wood industry; wood properties; Philippines
Abstract:
... The scarcity of timber to supply the wood-based industries is one of the prevailing problems worldwide. Tree plantations are the remaining solutions to subdue the shortage of raw materials, at the same time sequester atmospheric CO₂ in its biomass to reduce global warming. Planting Big-leaf mahogany (Swietenia macrophylla King) contributes valuable economic inputs to small tree farmers in the Phil ...
DOI:
10.1186/s10086-019-1814-4

38. Interaction of zero valent copper nanoparticles with algal cells under simulated natural conditions: Particle dissolution kinetics, uptake and heteroaggregation

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Arenas-Lago, Daniel; Monikh, Fazel Abdolahpur; Vijver, Martina G.;     Show all 4 Authors
Source:
The Science of the total environment 2019 v.689 pp. 133-140
ISSN:
0048-9697
Subject:
algae; copper; copper nanoparticles; culture media; dissolved organic matter; microorganisms; surface area
Abstract:
... Some metal-based engineered nanoparticles (ENPs) undergo fast dissolution and/or aggregation when they are released in the environment. The underlying processes are controlled by psychochemical/biological parameters of the environment and the properties of the particles. In this study, we investigated the interaction between algal cells and zero valent copper nanoparticles (Cu⁰-ENPs) to elucidate ...
DOI:
10.1016/j.scitotenv.2019.06.388

39. Compositional alterations in soil bacterial communities exposed to TiO2 nanoparticles are not reflected in functional impacts

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Zhai, Yujia; Hunting, Ellard R.; Liu, Gang; Baas, Elise; Vijver, Martina G.;     Show all 6 Authors
Source:
Environmental research 2019
ISSN:
0013-9351
Subject:
acute exposure; bacterial communities; chronic exposure; enzyme activity; nanoparticles; risk; soil bacteria; soil ecosystems; taxonomy; titanium dioxide
Abstract:
... Titanium dioxide nanoparticles (TiO2NP) are increasingly released in soil ecosystems, while there is limited understanding of the impacts of TiO2NP on soil bacterial communities. Here we investigated the effects of TiO2NP on the taxonomic composition and functional profile of a soil bacterial community over a 60-day exposure period. In short-term exposure (1-day), contradictory effects on the taxo ...
DOI:
10.1016/j.envres.2019.108713

40. Impact of metabolite accumulation on the structure, viability and development of succinic acid–producing biofilms of Actinobacillus succinogenes

Author:
Nicol, Willie,   et al.   ; Mokwatlo, Sekgetho Charles; Nchabeleng, Makhine Ernest; Brink, Hendrik Gideon;     Show all 4 Authors
Source:
Applied microbiology and biotechnology 2019 v.103 no.15 pp. 6205-6215
ISSN:
0175-7598
Subject:
Actinobacillus succinogenes; biocatalysts; biofilm; excretion; fermentation; fermenters; liquids; metabolites; quantitative analysis; sodium; succinic acid; viability
Abstract:
... Biofilms of Actinobacillus succinogenes have demonstrated exceptional capabilities as biocatalysts for high productivity, titre and yield production of succinic acid (SA). The paper presents a microscopic analysis of A. succinogenes biofilms developed under varied fermenter conditions. The concentration of excretion metabolites is controlled by operating the fermenter in a continuous mode where th ...
DOI:
10.1007/s00253-019-09888-8

41. Dissolution and aggregation kinetics of zero valent copper nanoparticles in (simulated) natural surface waters: Simultaneous effects of pH, NOM and ionic strength

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Arenas-Lago, Daniel; Abdolahpur Monikh, Fazel; Vijver, Martina G.;     Show all 4 Authors
Source:
Chemosphere 2019 v.226 pp. 841-850
ISSN:
0045-6535
Subject:
copper; copper nanoparticles; ionic strength; organic carbon; pH; surface area; surface water
Abstract:
... The combined effects of pH, dissolved organic carbon (DOC) and Ca2+/Mg2+ on the dissolution and aggregation kinetics of zero valent copper engineered nanoparticles (Cu0 ENPs) were investigated. The dissolution and aggregation of the particles were studied in (a) synthetic aqueous media, similar in chemistry to natural surface waters, and (b) natural surface waters samples, for up to 32 or 24 h. Th ...
DOI:
10.1016/j.chemosphere.2019.03.190

42. Analytical approaches for characterizing and quantifying engineered nanoparticles in biological matrices from an (eco)toxicological perspective: old challenges, new methods and techniques

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Abdolahpur Monikh, Fazel; Chupani, Latifeh; Vijver, Martina G.; Vancová, Marie;     Show all 5 Authors
Source:
The Science of the total environment 2019 v.660 pp. 1283-1293
ISSN:
0048-9697
Subject:
Raman spectroscopy; carbon nanotubes; energy-dispersive X-ray analysis; fractionation; freezing; mass spectrometry; micro-computed tomography; nanoparticles; risk; scanning electron microscopy; toxicity
Abstract:
... To promote the safer by design strategy and assess environmental risks of engineered nanoparticles (ENPs), it is essential to understand the fate of ENPs within organisms. This understanding in living organisms is limited by challenges in characterizing and quantifying ENPs in biological media. Relevant literature in this area is scattered across research from the past decade or so, and it consist ...
DOI:
10.1016/j.scitotenv.2019.01.105

43. Development of a nano-QSPR model to predict band gaps of spherical metal oxide nanoparticles

Author:
Peijnenburg, Willie J. G. M.,   et al.   ; Wang, Jiaxing; Wang, Ya; Huang, Yang; Chen, Jingwen; Li, Xuehua;     Show all 6 Authors
Source:
RSC advances 2019 v.9 no.15 pp. 8426-8434
ISSN:
2046-2069
Subject:
algorithms; antibacterial properties; cytotoxicity; heat; models; nanoparticles; quantitative structure-activity relationships; risk; screening
Abstract:
... Antibacterial activities and cytotoxicity of metal oxide nanoparticles are determined by their special band structures, which also influence their potential ecological risks. Traditional experimental determination of the band gap is time-consuming, while the accuracy of theoretical computation depends on the selected algorithm, for which higher precision algorithms, being more expensive, can give ...
DOI:
10.1039/c8ra10226k

44. Struvite Phosphorus Recovery from Aerobically Digested Municipal Wastewater

Author:
Harris, Willie G.,   et al.   ; Hallas, John F.; Mackowiak, Cheryl L.; Wilkie, Ann C.;     Show all 4 Authors
Source:
Sustainability 2019 v.11 no.2
ISSN:
2071-1050
Subject:
aerobic digestion; air sparging; anaerobic digestion; chemical equilibrium; filtrates; magnesium; magnesium ammonium phosphate; mineral fertilizers; models; municipal wastewater; pH; phosphorus; pollution load; sodium hydroxide; wastewater treatment; Florida
Abstract:
... Small, municipal wastewater treatment plants (WWTPs) that use aerobic digestion treat approximately 40% of the discharged wastewater in the USA, and yet they are an overlooked source of recoverable P. There are no known reports of small, aerobic WWTPs recovering P through struvite (MgNH4PO4·6H2O) precipitation for repurposing as a mineral fertilizer, even th ...
DOI:
10.3390/su11020376

45. Effect of Acceptor Chain Length and Hydrophobicity on Polymerization Kinetics of the Neisseria meningitidis Group C Polysialyltransferase

Author:
Vann, Willie F.,   et al.   ; Ming, Shonoi A.; Caro, Natalee C.; Lanz, Nicholas; Vionnet, Justine;     Show all 5 Authors
Source:
Biochemistry 2019 v.58 no.6 pp. 679-686
ISSN:
1520-4995
Subject:
Escherichia coli; Neisseria meningitidis; acids; active sites; animal pathogens; binding sites; catalytic activity; cattle; glycosyltransferases; hydrophobicity; kinetics; ligands; polymerization; polysaccharides; protein engineering; sialic acid; therapeutics; vaccines; virulence
Abstract:
... Polysialic acids (PSA) are important extracellular virulence factors of the human pathogens Neisseria meningitidis and Escherichia coli. The importance of these polysaccharides in virulence make the polysialyltransferases (PST) targets for therapeutic drugs and protein engineering to facilitate efficient vaccine production. Here, we have generated recombinant bovine nucleotide monophosphate kinase ...
DOI:
10.1021/acs.biochem.8b01114

46. Colletotrichum truncatum causing anthracnose on papaya fruit (Carica papaya) in Brazil

Author:
dos Santos Vieria, Willie Anderson,   et al.   ; dos Santos Nunes, Angélica; Veloso, Josiene Silva; Machado, Alexandre Reis; Balbino, Valdir Queiroz; da Silva, Anthony Carlos; Gomes, André Ângelo Medeiros; Doyle, Vinson Patrick; Câmara, Marcos Paz Saraiva;     Show all 9 Authors
Source:
Australasian plant disease notes 2020 v.15 no.1 pp. 2
ISSN:
1833-928X
Subject:
Carica papaya; Colletotrichum truncatum; anthracnose; etiological agents; papayas; pathogenicity; Brazil
Abstract:
... Papaya anthracnose caused by Colletotrichum truncatum is reported for the first time in Brazil. The etiological agent was identified by a combination of morphological and molecular approaches. Pathogenicity was confirmed and Koch’s postulates fulfilled for a selected isolate from Porto Seguro, Bahia, Brazil. ...
DOI:
10.1007/s13314-019-0371-4

47. An across-species comparison of the sensitivity of different organisms to Pb-based perovskites used in solar cells

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Wang, Guiyin; Zhai, Yujia; Zhang, Shirong; Diomede, Luisa; Bigini, Paolo; Romeo, Margherita; Cambier, Sebastien; Contal, Servane; Nguyen, Nhung H.A.; Rosická, Petra; Ševců, Alena; Nickel, Carmen; Vijver, Martina G.;     Show all 14 Authors
Source:
The Science of the total environment 2020 v.708 pp. 135134
ISSN:
0048-9697
Subject:
Caenorhabditis elegans; Pseudomonas putida; Vibrio fischeri; animal use alternatives; animals; bioassays; bioluminescence; median effective concentration; nanoparticles; soil bacteria; solar cells; toxicity; toxicology; viability
Abstract:
... Organic–inorganic perovskite solar cells (PSCs) are promising candidates as photovoltaic cells. Recently, they have attracted significant attention due to certified power conversion efficiencies exceeding 23%, low–cost engineering, and superior electrical/optical characteristics. These PSCs extensively utilize a perovskite–structured composite with a hybrid of Pb-based nanomaterials. Operation of ...
DOI:
10.1016/j.scitotenv.2019.135134

48. Impact of water chemistry on the behavior and fate of copper nanoparticles

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Xiao, Yinlong; Vijver, Martina G.;     Show all 3 Authors
Source:
Environmental pollution 2018 v.234 pp. 684-691
ISSN:
0269-7491
Subject:
aggregation behavior; cations; copper; copper nanoparticles; hydrochemistry; organic carbon; pH; prediction; variance
Abstract:
... A full-factorial test design was applied to systematically investigate the contribution and significance of water chemistry parameters (pH, divalent cations and dissolved organic carbon (DOC) concentration) and their interactions on the behavior and fate of copper nanoparticles (CuNPs). The total amount of Cu remaining in the water column after 48 h of incubation was mostly influenced by divalent ...
DOI:
10.1016/j.envpol.2017.12.015

49. Developing species sensitivity distributions for metallic nanomaterials considering the characteristics of nanomaterials, experimental conditions, and different types of endpoints

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Chen, Guangchao; Xiao, Yinlong; Vijver, Martina G.;     Show all 4 Authors
Source:
Food and chemical toxicology 2018 v.112 pp. 563-570
ISSN:
0278-6915
Subject:
Crustacea; coatings; uncertainty; nanomaterials; exposure duration; silver; risk assessment; toxicology; toxicity; environmental assessment
Abstract:
... A species sensitivity distribution (SSD) for engineered nanomaterials (ENMs) ranks the tested species according to their sensitivity to a certain ENM. An SSD may be used to estimate the maximum acceptable concentrations of ENMs for the purpose of environmental risk assessment. To construct SSDs for metal-based ENMs, more than 1800 laboratory derived toxicity records of metallic ENMs from >300 publ ...
DOI:
10.1016/j.fct.2017.04.003

50. Impact of water chemistry on the particle-specific toxicity of copper nanoparticles to Daphnia magna

Author:
Peijnenburg, Willie J.G.M.,   et al.   ; Xiao, Yinlong; Chen, Guangchao; Vijver, Martina G.;     Show all 4 Authors
Source:
The Science of the total environment 2018 v.610-611 pp. 1329-1335
ISSN:
0048-9697
Subject:
Daphnia magna; carbon; cations; copper; environmental assessment; hydrochemistry; lethal concentration 50; nanoparticles; pH; risk assessment; toxicity
Abstract:
... Toxicity of metallic nanoparticle suspensions (NP₍ₜₒₜₐₗ₎) is generally assumed to result from the combined effect of the particles present in suspensions (NP₍ₚₐᵣₜᵢcₗₑ₎) and their released ions (NP₍ᵢₒₙ₎). Evaluation and consideration of how water chemistry affects the particle-specific toxicity of NP₍ₜₒₜₐₗ₎ are critical for environmental risk assessment of nanoparticles. In this study, it was found ...
DOI:
10.1016/j.scitotenv.2017.08.188