Article
Environmental Sciences
Mark A. Cantu, Frank A. P. C. Gobas
Summary: The study investigated the bioaccumulation behavior of D6 in rainbow trout and found that the depuration of D6 in fish was mainly through biotransformation in the fish body, leading to a lack of biomagnification. The bioaccumulation capacity of D6 was markedly less than many hydrophobic organochlorines based on comparisons with similar profiles for other chemicals.
Article
Fisheries
Calvin Kluke, Gretchen L. Lescord, Thomas A. Johnston, Brian W. Kielstra, Alan Lock, Satyendra Bhavsar, John M. Gunn
Summary: This study investigated the spatial patterns in arsenic (As) bioaccumulation in freshwater systems in Ontario, Canada, using a dataset of 3200 fish across 152 waterbodies. The results showed that arsenic concentrations were generally low, but higher in fish from northern coastal rivers compared to landlocked sites. Arsenic concentrations were slightly associated with the proportion of pelagic carbon in a fish's diet, with variations among species and sites.
CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES
(2022)
Article
Environmental Sciences
Evelyn Vetsis, Ioanna Kalantzi, Spiros A. Pergantis, Lambros Kokokiris, Ioannis Karakassis
Summary: A study investigated the concentrations of 27 metals and elements in the tissues of 28 demersal and pelagic marine fish species from the Eastern Mediterranean Sea. The research found that the majority of elements had higher accumulation concentrations in the gills, liver, and scales, while the muscle had the lowest. Pelagic fish tended to accumulate higher concentrations of elements compared to demersal fish.
MARINE POLLUTION BULLETIN
(2021)
Article
Environmental Sciences
Izabela Pa Lka, Dominika Saniewska, Luiza Bielecka, Justyna Kobos, Waldemar Grzybowski
Summary: This study investigated the selenium concentration in water, phytoplankton, and zooplankton in the Baltic Sea and analyzed the factors affecting selenium absorption and transfer. The results showed that the biomass of plankton played an important role in shaping selenium concentration, and seasonal and taxonomic changes also influenced selenium concentration.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Engineering, Environmental
Hayley K. McIlwraith, Joel Kim, Paul Helm, Satyendra P. Bhavsar, Jeremy S. Metzger, Chelsea M. Rochman
Summary: Research found that larger fish have higher microplastic loads, but smaller fish have more translocated microplastics. There is no evidence of biomagnification of microplastics, with excretion of translocated particles or growth dilution possibly occurring instead of bioaccumulation.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Serena E. George, Tracie R. Baker, Bridget B. Baker
Summary: We analyzed the concentrations of 40 PFAS in fish muscle biopsy and serum samples to investigate PFAS in an aquatic food web and its potential human health implications. We detected novel PFAS congeners in the muscle and serum of three fish species from the Detroit River (contaminated site) and St. Clair River (reference site). The biomagnification of PFOS was observed in both rivers, and the nonlethal sampling method showed potential for monitoring PFAS and understanding their ecological and human health impacts.
ENVIRONMENTAL POLLUTION
(2023)
Article
Environmental Sciences
Lawrence P. Burkhard, Tylor J. Lahren, Kaila B. Hanson, Alex J. Kasparek, David R. Mount
Summary: Rainbow trout was exposed to a mixture of non-ionic organic chemicals through the diet, and the study found that highly hydrophobic chemicals were less bioavailable and bioaccumulative compared to other chemicals.
ARCHIVES OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2023)
Review
Environmental Sciences
Manoj Kumar, Sandeep Kaur Saggu, Pritu Pratibha, Sunil Kumar Singh, Shiv Kumar
Summary: Persistent organic pollutants (POPs) are chemicals that have stayed in the environment for a long time due to their long half-lives. The unsustainable management of chemicals has caused widespread contamination of biota, leading to the recognition of POPs' risk to organisms and the environment. Among the various techniques for removing POPs, microbial bioremediation has been found to be efficient and cost-effective. This review discusses the characteristics of POPs, compares conventional elimination methods with bioremediation, and highlights the potential of microbes as an eco-friendly approach for POPs elimination.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2023)
Article
Environmental Sciences
Qiu-Lian Zhong, Zhuo Chen, Qingyue Shen, Jiu-Qiang Xiong
Summary: This study investigated the occurrence and toxicity of antibiotics in reclaimed water and their fate in plants. The findings showed that antibiotics in reclaimed water had negative effects on the growth of plants. Ryegrass was found to effectively remove antibiotics through biodegradation processes.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Linda Bertato, Nicola Chirico, Ester Papa
Summary: Xenobiotics released in the environment can accumulate through the trophic chain, posing risks to humans and the environment. Integrated testing strategies and multiple sources of information are encouraged to maximize information and reduce costs. In silico tools like QSAR models are increasingly important for bioaccumulation assessment and the development of alternatives to animal testing.
Article
Environmental Sciences
Merete Grung, Sondre Meland, Anders Ruus, Sissel Ranneklev, Eirik Fjeld, Alfhild Kringstad, Jan Thomas Rundberget, Majbrit Dela Cruz, Jan H. Christensen
Summary: The study found that sedimentation ponds are hotspots for urban and traffic related contaminants, with a clear transport of polycyclic aromatic compounds (PACs) and polybrominated diphenyl ethers (PBDEs) to organisms. PACs and PBDEs in water and sediment can be transported to organisms, especially fish.
SCIENCE OF THE TOTAL ENVIRONMENT
(2021)
Review
Environmental Sciences
Klara Smidova, Marketa Svobodova, Jakub Hofman
Summary: Toxicokinetic studies on soil bioavailability of hydrophobic organic compounds lack comprehensive summaries on factors influencing uptake and elimination. Available data and models help in understanding the real situation in soil, but uncertainties remain regarding other soil properties and experimental conditions like food supply and metabolization in oligochaeta. Standardizing units and considering factors like steady state and aging are crucial for future research in this field.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Sonia Romero-Romero, Efren Garcia-Ordiales, Nieves Roqueni, Jose Luis Acuna
Summary: Despite their remote location, deep-sea species have the ability to accumulate mercury, mainly in the form of the neurotoxin methylmercury (MeHg). The concentration of MeHg increases with the depth of occurrence of fish, and is influenced by their habitat. MeHg can be used as an indicator of a species' trophic position in the food web.
Article
Environmental Sciences
Theo Wernicke, Elisa Rojo-Nieto, Albrecht Paschke, Claudia Nogueira Tavares, Mario Brauns, Annika Jahnke
Summary: This study utilized PSDs in a river contaminated with HOCs to estimate concentrations in model lipids, with results showing that PSD-based data from SPM provided a more conservative estimate of HOC accumulation in fish compared to water. The body length of the fish was found to be a more suitable indicator for bioaccumulation than their trophic level, offering a potential alternative for future studies without the need for sacrificing vertebrate species for monitoring purposes.
ENVIRONMENTAL SCIENCES EUROPE
(2022)
Article
Biochemistry & Molecular Biology
Yang-Guang Gu, Xu-Nuo Wang, Zeng-Huan Wang, Hong-Hui Huang, Xiu-Yu Gong
Summary: This study investigated the bioconcentration, bioaccumulation, and biomagnification of metals in the aquacultured fish species seabass (Lateolabrax japonicus). The research found that the gill and stomach contents of the fish had higher levels of metal bioconcentration. The bioaccumulation factor showed that the gill and backbone accumulated the highest levels of zinc, while the viscera accumulated the highest levels of copper. The study also revealed efficient bioaccumulation from commercial feed and the fish's habitat. Health risk assessment indicated no adverse effects from consuming seabass.
BIOLOGICAL TRACE ELEMENT RESEARCH
(2023)
Article
Environmental Sciences
Yilin Xiao, Xiaohan Lin, Haotian Wang, Xinghui Xia
Summary: This study found that zebrafish can absorb hydrophobic organic compounds (HOCs), such as polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs), through dermal uptake. The dermal uptake is an important pathway for HOCs bioconcentration in fish, and should be considered in the study of toxicodynamics and toxicokinetics of HOCs.
BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY
(2023)
Article
Environmental Sciences
Wu Wen, Lu Xiao, Diexuan Hu, Zhining Zhang, Yilin Xiao, Xiaoman Jiang, Shangwei Zhang, Xinghui Xia
Summary: This study investigated the bioaccumulation and fractionation of 11 PFAAs along an aquatic food chain. The results showed that shorter chain PFAAs had lower proportions in organisms compared to exposure water, while longer chain PFAAs had higher proportions. Predation promoted these fractionation differences, with shorter chain PFAAs being replaced by their longer chain analogues. This study highlights the importance of considering fractionation in studying the environmental behaviors and ecological risks of multiple PFAAs.
Article
Environmental Sciences
Zhenrui Zhang, Shaoda Liu, Xilong Wang, Shurui Huang, Ke Sun, Xinghui Xia
Summary: Humic substances (HSs) significantly influence the transport and bioavailability of hydrophobic organic compounds (HOCs) in soils. This study investigated the sorption behavior of HOCs by different HS fractions in soils from different climatic zones. The results showed that HSs from colder climatic zones exhibited higher sorption affinity and different compositions compared to those from warmer climatic zones. The findings highlights the importance of considering the sorption differences of HOCs to HSs among different climatic zones in predicting HOC fates and bioavailability in soils.
ENVIRONMENTAL POLLUTION
(2023)
Article
Engineering, Environmental
Xin Chen, Sibo Zhang, Jiao Liu, Junfeng Wang, Yuan Xin, Siyue Sun, Xinghui Xia
Summary: This study investigated the microbial sources of nitrous oxide (N2O) in rivers and the degree of N2O reduction. The findings suggest that nitrification and nitrifier denitrification are the dominant processes controlling N2O production in rivers, and intense microbial reduction significantly contributes to the low N2O emissions observed. The production and consumption of N2O in rivers should be considered in future research.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Haotian Wang, Diexuan Hu, Wu Wen, Xiaohan Lin, Xinghui Xia
Summary: In this study, it was found that warming increases the bioaccumulation of per- and polyfluoroalkyl substances (PFAS) in pelagic organisms due to increased water concentrations. However, warming did not significantly affect PFAS accumulation in benthic organisms, except for certain types, which was consistent with declined sediment concentrations. The findings highlight the importance of considering the media-specific effects of temperature on PFAS concentrations in ecological risk assessments under climate change.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Multidisciplinary
Ting Ruan, Pengyang Li, Haotian Wang, Tingyu Li, Guibin Jiang
Summary: Exposure to environmental organic pollutants has resulted in significant ecological impacts and negative health outcomes, leading to increased attention. Identifying the contribution of unknown chemical components is a crucial knowledge gap in understanding the combined effects of pollutant mixtures. Recent analytical breakthroughs have addressed this issue, and various complementary analytical methodologies and experimental platforms have been developed. Future research directions include nontarget screening methods, interdisciplinary techniques for toxicant identification, and strategies for risk assessment of chemical cocktails.
Article
Engineering, Environmental
Qing Zhang, Yingying Yang, Nanxiu Shang, Yu Xiao, Yilin Xiao, Yanna Liu, Xiaoman Jiang, Edmond Sanganyado, Shaoda Liu, Xinghui Xia
Summary: There is growing evidence that the transformation products of emerging contaminants in foodstuffs may pose a health risk to humans. In this study, various neonicotinoid insecticides and their transformation products were identified in retail cowpea samples from 11 cities in Hainan Province, China. The presence of new transformation products suggests that pesticide transformation products should be considered in risk assessments and regulatory management.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Jie Zhang, Chuanxin Ma, Xinghui Xia, Yao Li, Xiaohan Lin, Yidi Zhang, Zhifeng Yang
Summary: Positively charged nanoplastics induce stronger growth inhibition and gut damage in Chironomus kiinensis larvae compared to negatively charged nanoplastics. This is because the positively charged nanoplastics accumulate more readily in the gut, causing more severe oxidative stress, epithelial damage, and inflammatory responses. The positively charged nanoplastics also have a lower agglomeration rate, leading to increased interaction with gut cell membranes and microbiota. Furthermore, exposure to positively charged nanoplastics results in lower alpha diversity and relative abundance of key gut microbiota, exacerbating gut and growth damage.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Shangwei Zhang, Wu Wen, Xinghui Xia, Wei Ouyang, Bi-xian Mai, Lorenz Adrian, Gerrit Schuurmann
Summary: Thermodynamics reveals a proton-coupled two-electron transfer mechanism in microbial B-12-dependent reductive dehalogenation of aromatics, enhancing our understanding of the dehalogenation process.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Civil
Sibo Zhang, Xinghui Xia, Yuan Xin, Xiaokang Li, Junfeng Wang, Leilei Yu, Cangbai Li, William H. McDowell, Qian Tan, Zhifeng Yang
Summary: This study found that electrical conductivity is a reliable indicator for assessing the effect of land use types on stream N2O concentrations. It reflects the different levels of N2O concentration and flux in streams across different land uses. Higher electrical conductivity is associated with higher carbon and nutrient levels, as well as abundance of N2O-producing microbes. Electrical conductivity also has the potential to indicate the magnitude of exogenous N2O input across different land uses.
JOURNAL OF HYDROLOGY
(2023)
Article
Chemistry, Physical
Shangwei Zhang, Wei Ouyang, Xinghui Xia, Wu Wen, Lorenz Adrian, Gerrit Schueuermann
Summary: Microbial reductive dechlorination is an environmentally friendly and highly desirable method for addressing PCB pollution in soil, sediment, and underground water. The reaction is catalyzed by supernucleophilic cob(i)alamin housed in reductive dehalogenases (RDases), but the mechanism is still unknown.
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
(2023)