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1. DGT: A promising technology for in-situ measurement of metal speciation in the environment

Author:
Gao, Li; Gao, Bo; Xu, Dongyu; Liu, Linghua
Source:
The Science of the total environment 2020 v.715 pp. 136810
ISSN:
0048-9697
Subject:
toxicity,   etc   ; bioavailability; films (materials);     Show all 3 Subjects
Abstract:
... Toxicity, bioavailability, and mobility of a metal depend on its speciation rather than its total concentration. In this discussion, we emphasize the need for field-based metal speciation analysis methods, given the flaws of traditional techniques. We express a science-based opinion that the diffusive gradients in thin-films (DGT) is a promising and powerful technique for performing in-situ measur ...
DOI:
10.1016/j.scitotenv.2020.136810

2. A more sustainable and highly practicable synthesis of aliphatic isocyanides

Author:
Waibel, K. A.; Nickisch, R.; Möhl, N.; Seim, R.; Meier, M. A. R.
Source:
Green chemistry 2020 v.22 no.3 pp. 933-941
ISSN:
1463-9270
Subject:
toxicity,   etc   ; green chemistry; iodine;     Show all 3 Subjects
Abstract:
... Synthesis protocols to convert N-formamides into isocyanides using three different dehydration reagents (i.e. p-toluenesulfonyl chloride (p-TsCl), phosphoryl trichloride (POCl₃) and the combination of triphenylphosphane (PPh₃) and iodine) were investigated and optimized, while considering the principles of green chemistry. Comparison of the yield and the E-factors of the different synthesis proced ...
DOI:
10.1039/c9gc04070f

3. A critical viewpoint on current issues, limitations, and future research needs on micro- and nanoplastic studies: From the detection to the toxicological assessment.

Author:
Barbosa, Fernando; Adeyemi, Joseph A.; Bocato, Mariana Zuccherato; Comas, Ahmed; Campiglia, Andres
Source:
Environmental research 2020 v.182 pp. 109089
ISSN:
0013-9351
Subject:
toxicity; toxicity testing,   etc   ; data quality; ecosystems; humans; nanoplastics;     Show all 6 Subjects
Abstract:
... Increasing scientific attention on the presence of micro- and nanoplastics (MNPs) in the environments and their potential toxic effects on humans and the ecosystems is evident. Accordingly, the number of publications on this topic has increased substantially from only 5 in 2010 to more than 850 in 2019. Thus, this critical review aimed at providing state-of-the-art information on the existing meth ...
DOI:
10.1016/j.envres.2019.109089

4. Degradation of Triclosan by Recyclable MnFe₂O₄-Activated PMS: Process Modification for Reduced Toxicity and Enhanced Performance

Author:
So, Hiu-Lam; Lin, Koon-Yee; Chu, Wei; Gong, Han
Source:
Industrial & engineering chemistry process design and development 2020 v.59 no.10 pp. 4257-4264
ISSN:
1520-5045
Subject:
toxicity; toxicity testing,   etc   ; aquatic animals; catalysts; manganese; oxidants; pH; triclosan;     Show all 8 Subjects
Abstract:
... The degradation of triclosan (TCS) by MnFe₂O₄/PMS was investigated. The system was able to remove TCS in less than 20 min. Recycled MnFe₂O₄ was found to be more efficient than fresh MnFe₂O₄ for TCS degradation as a result of the alteration of Mn sites by peroxymonosulfate (PMS), leading to an extra degradation pathway where no oxidants are required. A modified treatment process is originally propo ...
DOI:
10.1021/acs.iecr.9b05481

5. The formation of PBDFs from the ortho-disubstituted phenol precursors: A comprehensive theoretical study on the PBDD/Fs formation from 2,4,6-tribromophenol

Author:
Chang, Jiamin; Pan, Wenxiao; Liu, Xian; Xue, Qiao; Fu, Jianjie; Zhang, Aiqian
Source:
The Science of the total environment 2020 v.713 pp. 136657
ISSN:
0048-9697
Subject:
toxicity,   etc   ; bromination; dibenzofuran; phenol; thermodynamics;     Show all 5 Subjects
Abstract:
... Bromophenols are known as direct precursors of the notorious polybrominated dibenzo-p-dioxin/dibenzofurans (PBDD/Fs). There is a long-held viewpoint that only the more toxic dioxin-type products could be formed from the ortho-disubstituted phenols, totally contrary to the experimental observations that both PBDDs and PBDFs are generated. To tackle the issue, the gaseous formation mechanism of PBDD ...
DOI:
10.1016/j.scitotenv.2020.136657

6. Acute and chronic toxicity of acetamiprid, carbaryl, cypermethrin and deltamethrin to Apis mellifera larvae reared in vitro

Author:
Yang, Yang; Ma, Shilong; Liu, Feng; Wang, Qiang; Wang, Xing; Hou, Chunsheng; Wu, Yanyan; Gao, Jing; Zhang, Li; Liu, Yongjun; Diao, Qingyun; Dai, Pingli
Source:
Pest management science 2020 v.76 no.3 pp. 978-985
ISSN:
1526-498X
Subject:
acute toxicity; chronic toxicity; toxicity testing,   etc   ; Apis mellifera; acetamiprid; adverse effects; carbaryl; cypermethrin; deltamethrin; honey bees; insect larvae; rearing; risk;     Show all 13 Subjects
Abstract:
... BACKGROUND: The effects of exposing Apis mellifera larvae to common insecticides were tested in the laboratory. RESULTS: The acute toxicity values of the four insecticides that we tested ranged from high toxicity to low toxicity: deltamethrin > cypermethrin > carbaryl > acetamiprid. The NOAEC (no observed adverse effect concentration) values of the chronic toxicity tests for each compound are 5 mg ...
DOI:
10.1002/ps.5606

7. Benefits from hazards, benefits from nothing, and benefits from benefits: the combined effects of five quaternary ammonium compounds to Vibrio qinghaiensis Q67

Author:
Mo, Ling-Yun; Liu, Yong-An; Zhu, Jie; Qin, Li-Tang; Liang, Yan-Peng; Zeng, Hong-Hu
Source:
Environmental sciences Europe 2020 v.32 no.1 pp. 35
ISSN:
2190-4707
Subject:
toxicity,   etc   ; Vibrio; aquatic environment; tetraethylammonium compounds;     Show all 4 Subjects
Abstract:
... BACKGROUND: Co-exposure of multiple quaternary ammonium compounds (QACs) is widely present in the aquatic environment. The knowledge about their toxicities to microorganism at low concentration is lacking. This study aims to test the toxic response of Vibrio qinghaiensis Q67 (12-h exposure) to individual and mixtures of QACs by the long-term microplate toxicity analysis method (L-MTA). RESULTS: Ho ...
DOI:
10.1186/s12302-020-00310-z

8. Near- to Long-Wave-Infrared Mercury Chalcogenide Nanocrystals from Liquid Mercury

Author:
Goubet, Nicolas; Thomas, Maxime; Gréboval, Charlie; Chu, Audrey; Qu, Junling; Rastogi, Prachi; Chee, Sang-Soo; Goyal, Mayank; Zhang, Yimin; Xu, Xiang Zhen; Cabailh, Gregory; Ithurria, Sandrine; Lhuillier, Emmanuel
Source:
Journal of physical chemistry 2020 v.124 no.15 pp. 8423-8430
ISSN:
1932-7455
Subject:
toxicity,   etc   ; dissociation; liquids; mercury; nanocrystals; water solubility;     Show all 6 Subjects
Abstract:
... HgTe nanocrystals are currently the most promising colloidal material for infrared detection, combining broadly tunable infrared absorption and photoconductive properties. Current syntheses lead to a limited amount of material and rely on a highly toxic water-soluble form of Hg. Here, we explore the possibility of using Hg thiolate as Hg source and demonstrate that the latter can be formed in situ ...
DOI:
10.1021/acs.jpcc.0c01255

9. Analysis of emerging per- and polyfluoroalkyl substances: Progress and current issues

Author:
Pan, Yitao; Wang, Jinghua; Yeung, Leo W.Y.; Wei, Si; Dai, Jiayin
Source:
Trends in analytical chemistry 2020 v.124 pp. 115481
ISSN:
0165-9936
Subject:
toxicity,   etc   ; gas chromatography; mass spectrometry; perfluorocarbons;     Show all 4 Subjects
Abstract:
... The increasingly stringent restrictions on legacy per- and polyfluoroalkyl substances (PFASs) have led to the compensatory use of new fluorinated replacements. These new compounds, hereafter referred to as emerging PFASs, continue to be discovered and are now showing ubiquity in abiotic and biotic environments. Thus, there is an urgent need for robust, yet sensitive analytical methods to determine ...
DOI:
10.1016/j.trac.2019.04.013

10. Comments on “Evaluation of potentially toxic element contamination in the riparian zone of the River Sava” by Pavlović et al. (2019)

Author:
Matys Grygar, T.
Source:
Catena 2020 v.185 pp. 104032
ISSN:
0341-8162
Subject:
toxicity,   etc   ; pollution; riparian areas; rivers; sediments;     Show all 5 Subjects
Abstract:
... Polluted fluvial systems deserve the continuous attention of researchers due to the relevancy of the contaminants in rivers which are crucial to sustainable life. Perhaps due to the complexity inherent to fluvial systems and the intricacy of sediment compositional data, not all current studies on contamination in river-transported matter meet the state-of-the-art knowledge in the relevant discipli ...
DOI:
10.1016/j.catena.2019.04.012

11. All-Inorganic Halide Perovskite Alloy Nanowire Network Photodetectors with High Performance

Author:
Tang, Xiaoming; Zhou, Hai; Pan, Xiyan; Liu, Ronghuan; Wu, Dingjun; Wang, Hao
Source:
ACS applied materials & interfaces 2020 v.12 no.4 pp. 4843-4848
ISSN:
1944-8252
Subject:
toxicity,   etc   ; air; alloys; bromine; lead; nanowires; tin;     Show all 7 Subjects
Abstract:
... Organic–inorganic hybrid lead halide perovskites have attracted much attention in the photoelectric field due to their excellent characteristics, such as a tunable band gap, simple fabrication process, and high photoelectric conversion efficiency. However, the commercialization of the perovskite-based devices still faces many challenges, one of which is the inclusion of the toxic lead. Herein, we ...
DOI:
10.1021/acsami.9b21666

12. Volatile DBPs contributed marginally to the developmental toxicity of drinking water DBP mixtures against Platynereis dumerilii

Author:
Li, Yu; Jiang, Jingyi; Li, Wanxin; Zhu, Xiaohu; Zhang, Xiangru; Jiang, Feng
Source:
Chemosphere 2020 v.252 pp. 126611
ISSN:
0045-6535
Subject:
developmental toxicity; toxicity testing,   etc   ; adverse effects; byproducts; chlorine; disinfection; drinking water; nitrogen; organic matter;     Show all 9 Subjects
Abstract:
... Halogenated disinfection byproducts (DBPs) are formed during chlorine disinfection of drinking water. The complicated natural organic matter in source water causes the formation of an even more complicated mixture of DBPs. To evaluate the toxicity of a DBP mixture in a disinfected water sample, the sample needs to be pretreated in order to attain an observable acute adverse effect in the toxicity ...
DOI:
10.1016/j.chemosphere.2020.126611

13. Changes in sediment microbial diversity following chronic copper-exposure induce community copper-tolerance without increasing sensitivity to arsenic

Author:
Mahamoud Ahmed, Ayanleh; Tardy, Vincent; Bonnineau, Chloé; Billard, Patrick; Pesce, Stéphane; Lyautey, Emilie
Source:
Journal of hazardous materials 2020 v.391 pp. 122197
ISSN:
0304-3894
Subject:
toxicity; toxicity testing,   etc   ; Archaea; arsenic; biochemical pathways; copper; environmental assessment; microbial communities; risk assessment; sediments;     Show all 10 Subjects
Abstract:
... Sediment microbial communities were exposed for 21 days to an environmental concentration of copper to assess Cu-induced composition changes and resulting effects on microbial sensitivity to acute Cu and As toxicity. Chronic Cu exposure reduced the diversity of the bacterial and archaeal communities from Day 0 to Day 21. The pollution-induced community tolerance concept (PICT) predicts that loss o ...
DOI:
10.1016/j.jhazmat.2020.122197

14. Ecotoxicological equilibria of triclosan in Microtox, XenoScreen YES/YAS, Caco2, HEPG2 and liposomal systems are affected by the occurrence of other pharmaceutical and personal care emerging contaminants

Author:
Miro, Manuel; Oliver, Miquel; Kudłak, Błażej; Wieczerzak, Monika; Reis, Salette; Lima, Sofia A.C.; Segundo, Marcela A.; Miró, Manuel
Source:
The Science of the total environment 2020 v.719 pp. 137358
ISSN:
0048-9697
Subject:
toxicity; toxicity testing,   etc   ; antagonism; antagonists; diclofenac; ecotoxicology; human cell lines; methylparaben; models; triclosan;     Show all 10 Subjects
Abstract:
... Contaminants of emerging concern may be considered as any chemicals or factors whose unintended continuous release and persistence in the environment may lead to any observable undesirable response of living beings. Still not much is known on reciprocal toxicological impact of given chemicals when present in binary or more complex mixtures. In this work, an attempt was thus undertaken to study the ...
DOI:
10.1016/j.scitotenv.2020.137358

15. Residue and toxicity of cyantraniliprole and its main metabolite J9Z38 in soil-earthworm microcosms

Author:
Zhang, Xiaolian; Wang, Xiuguo; Liu, Yalei; Fang, Kuan; Liu, Tong
Source:
Chemosphere 2020 v.249 pp. 126479
ISSN:
0045-6535
Subject:
toxicity; toxicity testing,   etc   ; amides; cyantraniliprole; earthworms; metabolites; oxidative stress; pesticide residues; soil; tandem mass spectrometry;     Show all 10 Subjects
Abstract:
... As part of a new generation of diamide insecticides, cyantraniliprole has broad application prospects. In the present study, a QuEChERS-UPLC-MS/MS method was established to determine the residues of cyantraniliprole and its main metabolite J9Z38 in soil and earthworms. Moreover, the accumulation and toxicity of cyantraniliprole and J9Z38 in earthworms were evaluated. The present results show that ...
DOI:
10.1016/j.chemosphere.2020.126479

16. Short‐Term Guideline Values for Chlorine in Marine Waters

Author:
Batley, Graeme E.; Simpson, Stuart L.
Source:
Environmental toxicology and chemistry 2020 v.39 no.4 pp. 754-764
ISSN:
0730-7268
Subject:
toxicity; toxicity testing,   etc   ; biofouling; chlorination; chlorine; dissociation; hypochlorites; mixing; organic matter; oxidants; seawater;     Show all 11 Subjects
Abstract:
... Chlorination is commonly used to control biofouling organisms, but chlorine rapidly hydrolyzes in seawater to hypochlorite, which undergoes further reaction with bromide, and then with organic matter. These reaction products, collectively termed chlorine‐produced oxidants (CPOs), can be toxic to marine biota. Because the lifetime of the most toxic forms is limited to several days, appropriate guid ...
DOI:
10.1002/etc.4661

17. Effect of calcite saturation state on the growth and mortality of Heterocypris incongruens and a proposal for an reference artificial sediment in the sediment toxicity test ISO14371

Author:
Gu, Yilu; Tobino, Tomohiro; Nakajima, Fumiyuki
Source:
The Science of the total environment 2020 v.702 pp. 134993
ISSN:
0048-9697
Subject:
toxicity; toxicity testing,   etc   ; Ostracoda; calcite; composts; growth retardation; particulates; quartz; sand; sewage sludge; soil; survival rate;     Show all 12 Subjects
Abstract:
... Since the establishment of the whole-contact sediment toxicity test using Heterocypris incongruens in 2012, this user-friendly method has been widely used for the assessment of many kinds of solid samples, such as sediment, soil, compost, and sewage sludge. There are two endpoints for this method: mortality and growth inhibition. Currently, there is no standard toxicity threshold established for t ...
DOI:
10.1016/j.scitotenv.2019.134993

18. Ecological niche distribution along soil toxicity gradients: Bridging theoretical expectations and metallophyte conservation

Author:
Boisson, Sylvain; Monty, Arnaud; Séleck, Maxime; Ngoy Shutcha, Mylor; Faucon, Michel-Pierre; Mahy, Grégory
Source:
Ecological modelling 2020 v.415 pp. 108861
ISSN:
0304-3800
Subject:
soil toxicity; toxicity,   etc   ; cobalt; copper; hyperaccumulators; mesic conditions; models; niches; soil; vegetation; Republic of the Congo;     Show all 11 Subjects
Abstract:
... Ecological niche modelling helps us to understand the spatial assembly of species in heterogeneous environments. Three patterns have been widely reported in the research literature regarding the relationship between realised niches and macronutrient concentration gradients: (1) species’ optima are unevenly distributed, with a higher frequency in mesic conditions; (2) species’ response curves are n ...
DOI:
10.1016/j.ecolmodel.2019.108861

19. Mixture toxicity of zinc oxide nanoparticle and chemicals with different mode of action upon Vibrio fischeri

Author:
Chen, Fen; Wu, Ligui; Xiao, Xiaoyu; Rong, Lingling; Li, Mi; Zou, Xiaoming
Source:
Environmental sciences Europe 2020 v.32 no.1 pp. 41
ISSN:
2190-4707
Subject:
acute toxicity; chronic toxicity; toxicity testing,   etc   ; Vibrio fischeri; additive effect; antagonism; mechanism of action; models; nanoparticles; prediction; zinc; zinc oxide; Yangtze River;     Show all 13 Subjects
Abstract:
... BACKGROUND: Zinc oxide nanoparticle (nZnO) and chemicals with different mode of action (MOA, i.e., narcotic and reactive) were frequently detected in the Yangtze River. Organisms are typically exposed to mixtures of nZnO and other chemicals rather than individual nZnO. Toxicity of nZnO is caused by the dissolution of Zn²⁺, which has been proved in the field of single toxicity. However, it is still ...
DOI:
10.1186/s12302-020-00320-x

20. Bispecific antibodies in cancer immunotherapy

Author:
Rader, Christoph
Source:
Current opinion in biotechnology 2020 v.65 pp. 9-16
ISSN:
0958-1669
Subject:
toxicity,   etc   ; T-lymphocytes; antibodies; antigens; immunotherapy; innate immunity; neoplasms;     Show all 7 Subjects
Abstract:
... Among antibody-based cancer therapies, bispecific antibodies (biAbs) have gained momentum in preclinical and clinical investigations following the regulatory approvals of the trailblazing T-cell engaging biAb (T-biAb) blinatumomab. Discussed herein are recent strategies that aim at boosting the potency and mitigating the toxicity of T-biAbs, broadening their therapeutic utility from hematologic to ...
DOI:
10.1016/j.copbio.2019.11.020