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1. Much ado about interaction: A combination of linear processes yields non-linear toxic effects in chemical mixtures

Author:
Kamo, Masashi; Iwasaki, Yuichi; Yokomizo, Hiroyuki
Source:
Chemosphere 2019 v.219 pp. 89-94
ISSN:
0045-6535
Subject:
toxicity; toxicity testing,   etc   ; ligands; metals; models; prediction; risk assessment;     Show all 7 Subjects
Abstract:
... Predicting chemical mixture toxicity is an important issue for risk assessment. Loewe's concentration addition (CA) is a major model for predicting such toxicity. The CA is an additivity-based model, and if the results of toxicity test deviate from the CA prediction, it is considered that the toxic effect of the mixture is non-additive, and that “interaction” has played some role. In the present s ...
DOI:
10.1016/j.chemosphere.2018.11.134

2. We might have got it wrong: Modern wheat is not more toxic for celiac patients

Author:
Ribeiro, Miguel; Nunes, Fernando M.
Source:
Food chemistry 2019 v.278 pp. 820-822
ISSN:
0308-8146
Subject:
toxicity,   etc   ; celiac disease; patients; wheat;     Show all 4 Subjects
Abstract:
... If there is a disease in which many myths are part of the daily lives of both patients and clinicians as well as researchers, this must be celiac disease. Here, we discuss the possibility that modern wheat varieties used by man do not have led to the increased prevalence of celiac disease. ...
DOI:
10.1016/j.foodchem.2018.12.003

3. Occurrence, toxicity, and speciation analysis of arsenic in edible mushrooms

Author:
Zou, Haimin; Zhou, Chen; Li, Yongxin; Yang, Xiaosong; Wen, Jun; Hu, Xiaoke; Sun, Chengjun
Source:
Food chemistry 2019 v.281 pp. 269-284
ISSN:
0308-8146
Subject:
toxicity,   etc   ; arsenic; biotransformation; human health; mushrooms;     Show all 5 Subjects
Abstract:
... Owing to the strong concentration and biotransformation of arsenic, the influence of some edible mushrooms on human health has attracted widespread attention. The toxicity of arsenic greatly depends on its species, so the speciation analysis of arsenic is of critical importance. The aim of the present review is to highlight recent advances in arsenic speciation analysis in edible mushrooms. We sum ...
DOI:
10.1016/j.foodchem.2018.12.103

4. Evaluation of the bio-protection mechanism in diffusive exchange permeable reactive barriers for the treatment of acid mine drainage

Author:
Torregrosa, Martin; Schwarz, Alex; Nancucheo, Ivan; Balladares, Eduardo
Source:
The Science of the total environment 2019 v.655 pp. 374-383
ISSN:
0048-9697
Subject:
toxicity,   etc   ; acid mine drainage; copper; monitoring; zinc;     Show all 5 Subjects
Abstract:
... This research studied the bio-protection mechanism based on chemical gradients in diffusive exchange permeable reactive barriers, evaluating the thickness of the reactive layers in the treatment of concentrated acid mine drainage (AMD). Six bench-scale reactors were constructed with reactive layer thicknesses of 2.5, 5, and 7.5 cm in duplicate. The reactors were first fed a sulfated solution for 5 ...
DOI:
10.1016/j.scitotenv.2018.11.083

5. Effect of hydroxypropyl-β-cyclodextrin on the cometabolism of phenol and phenanthrene by a novel Chryseobacterium sp.

Author:
Xiao, Meng; Yin, Xiangyang; Gai, Hengjun; Ma, Honglei; Qi, Yanfeng; Li, Kun; Hua, Xia; Sun, Meng; Song, Hongbing
Source:
Bioresource technology 2019 v.273 pp. 56-62
ISSN:
0960-8524
Subject:
toxicity,   etc   ; Chryseobacterium; coal; phenanthrenes; phenol; solubility; wastewater;     Show all 7 Subjects
Abstract:
... Cometabolic degradation is an effective method to remove the polycyclic aromatic hydrocarbons (PAHs) with phenol as growth substrate from coal chemical wastewater (CCW). Unfortunately, the toxicity and low solubility of PAHs always restrict their degradation. In this study, Chryseobacterium sp. H202 was firstly isolated from the aerobic segment of CCW. Then, to improve the cometabolic degradation ...
DOI:
10.1016/j.biortech.2018.10.087

6. The flotation separation of galena and pyrite using serpentine as depressant

Author:
Feng, Bo; Zhang, Wenpu; Guo, Yutao; Wang, Tao; Luo, Guodong; Wang, Huihui; He, Guichun
Source:
Powder technology 2019 v.342 pp. 486-490
ISSN:
0032-5910
Subject:
toxicity,   etc   ; lead; potassium; powders; pyrite; serpentine;     Show all 6 Subjects
Abstract:
... Toxic inorganic depressants are commonly used in the flotation separation of polymetallic sulfide ores and it is desirable that they can be replaced by environmentally benign substances. Serpentine, a common gangue mineral encountered in complex sulfide ores, has been found to be an efficient depressant for ferric sulfide (e.g., pyrite). Serpentine was tested as a potential selective depressant in ...
DOI:
10.1016/j.powtec.2018.09.070

7. Relevance of nano- and microplastics for freshwater ecosystems: A critical review

Author:
Triebskorn, Rita; Braunbeck, Thomas; Grummt, Tamara; Hanslik, Lisa; Huppertsberg, Sven; Jekel, Martin; Knepper, Thomas P.; Krais, Stefanie; Müller, Yanina K.; Pittroff, Marco; Ruhl, Aki S.; Schmieg, Hannah; Schür, Christoph; Strobel, Claudia; Wagner, Martin; Zumbülte, Nicole; Köhler, Heinz-R.
Source:
Trends in analytical chemistry 2019 v.110 pp. 375-392
ISSN:
0165-9936
Subject:
toxicity,   etc   ; freshwater; freshwater ecosystems; humans; nanoplastics; rivers;     Show all 6 Subjects
Abstract:
... The current paper critically reviews the state-of-the-science on (1) microplastics (MP) types and particle concentrations in freshwater ecosystems, (2) MP and nanoplastics (NP) uptake and tissue translocation, (3) MP/NP-induced effects in freshwater organisms, and (4) capabilities of MP/NP to modulate the toxicity of environmental chemicals. The reviewed literature as well as new data on MP and NP ...
DOI:
10.1016/j.trac.2018.11.023

8. Natural and assisted dissipation of polycyclic aromatic hydrocarbons in a long-term co-contaminated soil with creosote and potentially toxic elements

Author:
Madrid, F.; Rubio-Bellido, M.; Villaverde, J.; Peña, A.; Morillo, E.
Source:
The Science of the total environment 2019 v.660 pp. 705-714
ISSN:
0048-9697
Subject:
acute toxicity; toxicity testing,   etc   ; Vibrio fischeri; bacteria; bioavailability; bioremediation; creosote; phenanthrenes; polluted soils; rhamnolipids; toxic substances;     Show all 11 Subjects
Abstract:
... An enhanced bioremediation strategy was applied to an industrial soil co-contaminated with Polycyclic Aromatic Hydrocarbons (PAHs) and Potentially Toxic Elements (PTEs). Hydroxypropyl-β-cyclodextrin (HPBCD) and a natural mixture of two rhamnolipids (RL) were added to increase PAHs bioavailability, and combined with a microbial consortium (MC) to biodegrade soil PAHs. Bioavailability of only six PA ...
DOI:
10.1016/j.scitotenv.2018.12.376

9. Comparison of false‐positive rates of 2 hypothesis‐test approaches in relation to laboratory toxicity test performance

Author:
Fox, John F.; Denton, Debra L.; Diamond, Jerry; Stuber, Robyn
Source:
Environmental toxicology and chemistry 2019 v.38 no.3 pp. 511-523
ISSN:
0730-7268
Subject:
toxicity; toxicity testing,   etc   ; Ceriodaphnia dubia; United States Environmental Protection Agency; females; laboratory experimentation; probability; progeny; reproduction;     Show all 9 Subjects
Abstract:
... We compared 2 statistical hypothesis‐test approaches (no‐observed‐effect concentration [NOEC] and test of significant toxicity [TST]) to determine the influence of laboratory test performance on the false‐positive error rate using the US Environmental Protection Agency's Ceriodaphnia dubia reproduction whole‐effluent toxicity (WET) test endpoint. Simulation and power calculations were used to dete ...
DOI:
10.1002/etc.4347

10. Effect of polycyclic musk compounds on aquatic organisms: A critical literature review supplemented by own data

Author:
Tumová, Jitka; Šauer, Pavel; Golovko, Oksana; Koba Ucun, Olga; Grabic, Roman; Máchová, Jana; Kocour Kroupová, Hana
Source:
The Science of the total environment 2019 v.651 pp. 2235-2246
ISSN:
0048-9697
Subject:
toxicity; toxicity testing,   etc   ; aeration; aquatic environment; aquatic organisms; cosmetics; experimental design; sewage treatment;     Show all 8 Subjects
Abstract:
... Synthetic musk compounds are extensively used in personal care and cosmetic products around the world. Because they are not completely removed in sewage treatment plants, they eventually end up in aquatic environments. The aim of this review was to summarize published information on effects of polycyclic musks on aquatic organisms and to discuss whether the experimental design of toxicological stu ...
DOI:
10.1016/j.scitotenv.2018.10.028

11. Oil toxicity test methods must be improved

Author:
Hodson, Peter V.; Adams, Julie; Brown, R. Stephen
Source:
Environmental toxicology and chemistry 2019 v.38 no.2 pp. 302-311
ISSN:
0730-7268
Subject:
toxicity; toxicity testing,   etc   ; bioaccumulation; chemical analysis; containers; hydrocarbons; industry; literature; oils; protocols; risk; risk assessment; uncertainty;     Show all 13 Subjects
Abstract:
... A review of the literature on oil toxicity tests showed a high diversity of reported test methods that may affect the composition, stability, and toxicity of oil solutions. Concentrations of oil in test solutions are dynamic because hydrocarbons evaporate, partition to test containers, bioaccumulate, biodegrade, and photo‐oxidize. As a result, the composition and toxicity of test solutions may var ...
DOI:
10.1002/etc.4303

12. High‐throughput screening and environmental risk assessment: State of the science and emerging applications

Author:
Villeneuve, Daniel L.; Coady, Katie; Escher, Beate I.; Mihaich, Ellen; Murphy, Cheryl A.; Schlekat, Tamar; Garcia‐Reyero, Natàlia
Source:
Environmental toxicology and chemistry 2019 v.38 no.1 pp. 12-26
ISSN:
0730-7268
Subject:
toxicity; toxicity testing,   etc   ; databases; environmental assessment; issues and policy; models; risk assessment; screening; United States;     Show all 9 Subjects
Abstract:
... In 2007 the United States National Research Council (NRC) published a vision for toxicity testing in the 21st century that emphasized the use of in vitro high‐throughput screening (HTS) methods and predictive models as an alternative to in vivo animal testing. In the present study we examine the state of the science of HTS and the progress that has been made in implementing and expanding on the NR ...
DOI:
10.1002/etc.4315

13. Effectiveness of ecotoxicological tests in relation to physicochemical properties of Zn and Cu polluted Mediterranean soils

Author:
García-Carmona, M.; Romero-Freire, A.; Sierra Aragón, M.; Martín Peinado, F.J.
Source:
Geoderma 2019 v.338 pp. 259-268
ISSN:
0016-7061
Subject:
soil toxicity; toxicity; toxicity testing,   etc   ; calcium carbonate; copper; ecotoxicology; organic carbon; physicochemical properties; polluted soils; pollution; risk; root growth; soil properties; soil respiration; soil sampling; zinc;     Show all 16 Subjects
Abstract:
... Zinc (Zn) and copper (Cu) are essential elements for living organisms, but they are also among the most frequent soils pollutants. Toxicity of these elements is difficult to assess and often shows contradictory results among authors due to the great complexity of the interactions with soil properties and constituents. The study of the individual metal behaviour will help provide a complete overvie ...
DOI:
10.1016/j.geoderma.2018.12.016

14. Toxicological safety evaluation in acute and 28-day studies of aqueous extract from Serjania marginata Casar. (Sapindaceae) leaves in rats

Author:
da Silva Moreira, Suyane; Tamashiro, Leticia Kaory; Jorge, Bárbara Campos; da Silva Balin, Paola; Heredia-Vieira, Silvia Cristina; de Almeida, Gabriela Lessa; Cardoso, Claudia Andrea Lima; Kassuya, Cândida Aparecida Leite; Arena, Arielle Cristina
Source:
Journal of ethnopharmacology 2019 v.231 pp. 197-204
ISSN:
0378-8741
Subject:
acute toxicity; subacute toxicity; toxicity testing,   etc   ; Sapindaceae; albumins; erythrocytes; females; kidneys; leaves; lethal dose 50; males; rats; spermatozoa; therapeutics; traditional medicine;     Show all 15 Subjects
Abstract:
... Serjania marginata Casar. (Sapindaceae) is a species traditionally known to be used for the treatment of gastric pain and inflammatory symptoms.Due to the therapeutic importance of this species, this study investigated the toxicological effects of S. marginata leaves (AESM), after a single and a repeated exposure in rats.For the acute toxicity test, 2000 mg/kg of AESM was administered to male and ...
DOI:
10.1016/j.jep.2018.11.024

15. Acute and Subchronic Oral and Dermal Toxicological Studies of Salvia Verbenaca Extracts in Mice and Rats

Author:
Guaouguaou, Fatima-Ezzahrae; Taghzouti, Khalid; Oukabli, Mohamed; Masrar, Azlarab; Chabraoui, Layachi; Bouabdellah, Mounia; Es-Safi, Nour Eddine
Source:
Journal of herbs, spices & medicinal plants 2019 v.25 no.1 pp. 33-42
ISSN:
1540-3580
Subject:
acute toxicity; dermal toxicity; subchronic toxicity,   etc   ; Salvia verbenaca; alanine transaminase; aspartate transaminase; blood platelets; body weight; dose response; hematology; histopathology; mice; plant extracts; rats;     Show all 14 Subjects
Abstract:
... The acute and subchronic toxicological effects of Salvia verbenaca extracts in hexane, ethyl acetate, n-butanol, were investigated. The extracts were not toxic at 2000 mg Kg⁻¹. A normal body weight evolution was observed during the 14 treatment days where there was no difference between the control and the treated groups. No abnormalities were seen in the haematological and biochemical parameters ...
DOI:
10.1080/10496475.2018.1556372

16. Efficient liquid-phase exfoliation of few-layer graphene in aqueous 1, 1, 3, 3-tetramethylurea solution

Author:
Wan, Qiang; Wang, Huiyong; Li, Shuangyu; Wang, Jianji
Source:
Journal of colloid and interface science 2018 v.526 pp. 167-173
ISSN:
0021-9797
Subject:
toxicity,   etc   ; graphene; solvents;     Show all 3 Subjects
Abstract:
... Liquid-phase exfoliation of graphite is a promising method to produce graphene in large quantities. Selection of the solvent is the most important factor in determining the productivity of liquid-phase exfoliation and stability of the graphene dispersion. However, only low concentrations of graphene dispersion have been achieved in most of the solvents, and the solvents usually employed are toxic ...
DOI:
10.1016/j.jcis.2018.04.110

17. Environmental mixtures of nanomaterials and chemicals: The Trojan-horse phenomenon and its relevance for ecotoxicity

Author:
Naasz, Steffi; Altenburger, Rolf; Kühnel, Dana
Source:
The Science of the total environment 2018 v.635 pp. 1170-1181
ISSN:
0048-9697
Subject:
toxicity,   etc   ; ecotoxicology; models; nanomaterials;     Show all 4 Subjects
Abstract:
... The usage of engineered nanomaterials (NM) offers many novel products and applications with advanced features, but at the same time raises concerns with regard to potential adverse biological effects. Upon release and emission, NM may interact with chemicals in the environment, potentially leading to a co-exposure of organisms and the occurrence of mixture effects. A prominent idea is that NM may ...
DOI:
10.1016/j.scitotenv.2018.04.180

18. Dilution destabilizes engineered ligand‐coated nanoparticles in aqueous suspensions

Author:
Wan, Jiamin; Kim, Yongman; Mulvihill, Martin J.; Tokunaga, Tetsu K.
Source:
Environmental toxicology and chemistry 2018 v.37 no.5 pp. 1301-1308
ISSN:
0730-7268
Subject:
toxicity,   etc   ; colloids; ligands; nanoparticles;     Show all 4 Subjects
Abstract:
... It is commonly true that a diluted colloidal suspension is more stable over time than a concentrated one because dilution reduces collision rates of the particles and therefore delays the formation of aggregates. However, this generalization does not apply for some engineered ligand‐coated nanoparticles (NPs). We observed the opposite relationship between stability and concentration of NPs. We tes ...
DOI:
10.1002/etc.4103

19. Correction to: Effect of biosolid hydrochar on toxicity to earthworms and brine shrimp

Author:
Melo, TatianeMedeiros; Bottlinger, Michael; Schulz, Elke; Leandro, WilsonMozena; de Aguiar Filho, AdelmoMenezes; Ok, YongSik; Rinklebe, Jörg
Source:
Environmental geochemistry and health 2018 v.40 no.1 pp. 557-558
ISSN:
0269-4042
Subject:
toxicity,   etc   ; Artemia; earthworms; hydrochars;     Show all 4 Subjects
Abstract:
... Unfortunately, in the original publication of the article, Prof. Yong Sik Ok’s affiliation was incorrectly published. The author’s affiliation is as follows. ...
DOI:
10.1007/s10653-017-0042-3

20. Mechanistic studies on the dibenzofuran and dibenzo‑p‑dioxin formation reactions from anthracene

Author:
Zhang, Ruiming; Zhuang, Tao; Zhang, Qingzhu; Wang, Wenxing
Source:
The Science of the total environment 2019 v.662 pp. 41-47
ISSN:
0048-9697
Subject:
toxicity,   etc   ; anthracenes; dibenzofuran; humans; mutagens; oxidation; polychlorinated dibenzodioxins; polychlorinated dibenzofurans;     Show all 8 Subjects
Abstract:
... Polychlorinated dibenzo‑p‑dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) are highly toxic, carcinogenic and mutagenic to humans. As precursors of PCDD/Fs, dibenzofuran (DF) and dibenzo‑p‑dioxin (DD) have received considerable public and scientific attention. To reduce the emission of PCDD/Fs, it is critical to explore the formation mechanisms of DF and DD. The present study delineated t ...
DOI:
10.1016/j.scitotenv.2018.12.408