Geographic distribution of heavy metals and identification of their sources in soils near large, open-pit coal mines using positive matrix factorization

Journal of Hazardous Materials, Год журнала: 2019, Номер 387, С. 121666 - 121666

Опубликована: Ноя. 11, 2019

Язык: Английский

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Risk assessment of soil heavy metals associated with land use variations in the riparian zones of a typical urban river gradient

Ecotoxicology and Environmental Safety, Год журнала: 2019, Номер 181, С. 435 - 444

Опубликована: Июнь 18, 2019

Язык: Английский

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Ecological risk assessment and sources identification of heavy metals in surface sediments of a river–reservoir system

The Science of The Total Environment, Год журнала: 2022, Номер 842, С. 156683 - 156683

Опубликована: Июнь 11, 2022

Язык: Английский

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Deposition behavior, risk assessment and source identification of heavy metals in reservoir sediments of Northeast China

Ecotoxicology and Environmental Safety, Год журнала: 2017, Номер 142, С. 454 - 463

Опубликована: Апрель 28, 2017

Язык: Английский

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Long-term variations in sediment heavy metals of a reservoir with changing trophic states: Implications for the impact of climate change

The Science of The Total Environment, Год журнала: 2017, Номер 609, С. 242 - 250

Опубликована: Июль 23, 2017

Язык: Английский

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Heavy metal pollution risk assessments and their transportation in sediment and overlay water for the typical Chinese reservoirs

Ecological Indicators, Год журнала: 2020, Номер 112, С. 106166 - 106166

Опубликована: Фев. 6, 2020

To assess the metals (Cr, Mn, Cu, Zn, Cd, Hg and Pb) pollution risks their transportation in sediment overlay water from typical reservoirs rapidly developing economic region of southeastern China, this study integrated an intact core incubation vertical distribution analysis a drinking reservoir (Drinking-Y) irrigation (Irrigation-T). The results revealed that both studied were severely polluted by heavy metals. Irrigation-T was at considerable risk compared to Drinking-Y (a moderate or slightly risk) reflecting higher concentration versus Drinking-Y. Concentrations Cd overlying exceeded World Health Organization (WHO) standard, contributing approximately 90% total potential ecological index (RI) for sediment. Most continue increase inputs into can settle 10–15 days static incubation. main anthropogenic sources originated fuel combinations industry mills (6.4%) agricultural activities (38%) (4.9%), (32.9%) mines quarries (62.1%) Irrigation-T. reduce human health risks, therefore, freshwater should be stored prior irrigation. Our data indicated all current require more attention further reducing risks.

Язык: Английский

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Understanding Enhanced Microbial MeHg Production in Mining-Contaminated Paddy Soils under Sulfate Amendment: Changes in Hg Mobility or Microbial Methylators?

Environmental Science & Technology, Год журнала: 2019, Номер 53(4), С. 1844 - 1852

Опубликована: Янв. 14, 2019

Elevated methylmercury (MeHg) production in mining-contaminated paddy soils, despite the high fraction of refractory HgS(s), has been frequently reported, while underlying mechanisms are not fully understood. Here, we hypothesized that sulfate input, via fertilization, rainfall, and irrigation, is critical mobilizing HgS(s) thus enhancing Hg methylation soils. To test this hypothesis, effects amendment on MeHg bioaccumulation soil-rice systems were examined. The results indicated 28–61% higher net soils under (50–1000 mg kg–1), which turn increased grain levels by 22–55%. enhancement mobilization sulfate-amended was supported two observations: (1) Hg(aq) release from dominant species presence sulfide produced following reduction (2) decreases amendment. By contrast, changes abundances/activities potential microbial methylators different Hg-contaminated significant Our highlight importance to consider enhanced mobility

Язык: Английский

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Accumulation of arsenic, mercury and heavy metals in lacustrine sediment in relation to eutrophication: Impacts of sources and climate change

Ecological Indicators, Год журнала: 2018, Номер 93, С. 771 - 780

Опубликована: Май 30, 2018

Язык: Английский

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Role of Biofilms in Contaminant Bioaccumulation and Trophic Transfer in Aquatic Ecosystems: Current State of Knowledge and Future Challenges

Reviews of Environmental Contamination and Toxicology, Год журнала: 2020, Номер unknown, С. 115 - 153

Опубликована: Янв. 1, 2020

Язык: Английский

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Contamination source, health and ecological risk assessment of hazardous elements in the sediment of the Shahid Rajaee reservoir

Frontiers in Environmental Science, Год журнала: 2024, Номер 12

Опубликована: Окт. 21, 2024

Sediment pollution from potentially hazardous elements (PHE) generated by human activity has grown into a worldwide problem. In this regard, for the first time, surface sediment samples were obtained six points along Shahid Rajaee Reservoir investigation. Elements concentrations (Cu, Cr, Co, Mn, Fe, Pb, Ni, and Zn) assessed using ICP-MS. Based on individual indices (geoaccumulation index, contamination factor), all at sample sites found to be low in contamination, except Pb Zn (at 1 2). The combined effect of PHEs did not show considerable concern, according synergistic indices. health risk assessment revealed that recreational receptors unlikely face non-carcinogenic or carcinogenic hazards as consequence exposure sediments with unintentional ingesting contact skin. Tessier technique demonstrated mostly connected oxidizable fraction. According statistical study, while Cu, Mn lithogenic sources, came natural well human-made sources.

Язык: Английский

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