Health risk assessment of heavy metals in wild fish and seasonal variation and source identification of heavy metals in sediments: a case study of typical urban river in Xi’an, China

Environmental Science and Pollution Research, Год журнала: 2024, Номер 31(6), С. 8898 - 8916

Опубликована: Янв. 5, 2024

Язык: Английский

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Heavy metal distribution, fractionation, metal pollution and environmental risk assessment in surface sediment of Narmada River, India

International Journal of Environmental & Analytical Chemistry, Год журнала: 2024, Номер unknown, С. 1 - 22

Опубликована: Янв. 8, 2024

Owing to the rapid industrial and socioeconomic development, heavy metal concentration in river is gradually increasing, it has potential threaten aquatic environment mankind. The present investigation deals with quantification fractionation of metals from sediments Narmada River. presence these can be toxic human health life, therefore different pollution indices were evaluated identify degree threat that might imposed by contaminants surface water sediment. In this context, risk assessment code (RAC), hazard quotient (HQ), index (HI) total cancer (TCR) calculated examine contamination on being. important their (in mg/kg, dry weight) have followed following order, Fe > Al Mn Cr Cu Ni Zn Pb Cd. Pollution classified under uncontaminated moderately contaminated category; major responsible for levels Cr, Mn, Pb. RAC identified Cd as which may cause a high organisms. HQ, HI TCR values confirmed no risk. However, via ingestion children. insights obtained study shall aware encourage competent legislative bodies plan an appropriate regular monitoring campaign take necessary measures improve river.

Язык: Английский

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Spatial Distribution, Ecological and Human Health Risks of Potentially Toxic Elements (PTEs) in River Ravi, Pakistan: A Comprehensive Study

Environmental Research, Год журнала: 2024, Номер 263, С. 120205 - 120205

Опубликована: Окт. 21, 2024

Язык: Английский

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Quantitative effects of anthropogenic and natural factors on the spatial distribution of heavy metals and bacterial communities in sediments of the Pearl River Delta

Environmental Technology & Innovation, Год журнала: 2024, Номер 35, С. 103648 - 103648

Опубликована: Апрель 27, 2024

Heavy metal (HM) contamination of aquatic ecosystems has increasingly posed threats to ecological balance and health. Analysis sediments determine water pollution sources is widely reported, while quantitative research about the effects environmental factors on distribution HMs relevant microbial communities limited. Here, we investigated 6 kinds HM characteristics (As, Cd, Cr, Cu, Pb, Zn) Pearl River Delta (PRD) by collecting surface sediment samples around main stream estuary explored influencing with a geographical detector method (GDM). The shifts in corresponding community was further analyzed, influence mechanism clearly elucidated using partial least squares path modeling (PLS-PM). Results showed that (i) most contents greatly exceeded local background values, wherein, Cd had highest level; (ii) temperature considered dominant natural factor distribution, except for an degree 0.68–0.97; (iii) industrial activity significant anthropogenic electroplating industry source Cu Zn; (iv) network analysis revealed As, Cr were enriched some HM-tolerant bacteria (mainly Chloroflexi, Acidobacteriota Proteobacteria), heavy induced reduction sensitive bacterial taxa; (v) PLS-PM demonstrated human activities largely affect causing pollution. This study could provide guidance better management control practices, such as specific governance layout optimization.

Язык: Английский

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Current state, sources, and potential risk of heavy metals in sediments of typical inner lakes in the Dongting Lake Area

Process Safety and Environmental Protection, Год журнала: 2024, Номер 190, С. 1290 - 1300

Опубликована: Авг. 2, 2024

Язык: Английский

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