Evaluation of heavy metal accumulation and sources in surface sediments of the Pearl River Estuary (China)

Marine Environmental Research, Год журнала: 2025, Номер 204, С. 106948 - 106948

Опубликована: Янв. 4, 2025

Язык: Английский

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Sediment heavy metal speciation of Hirakud Reservoir—a Ramsar site in Mahanadi River in India

Environmental Monitoring and Assessment, Год журнала: 2025, Номер 197(4)

Опубликована: Март 18, 2025

Язык: Английский

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Assessment of Heavy Metal Contamination and Geochemical Characterization of Sediments in Kadinamkulam-Anchuthengu Lake a Tropical Coastal Wetland System in South West Coast of India

Regional Studies in Marine Science, Год журнала: 2025, Номер unknown, С. 104160 - 104160

Опубликована: Март 1, 2025

Язык: Английский

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Influence of CO2-induced acidification and temperature increased on the toxicity of metals in sediment in the mussel Mytella charruana

Frontiers in Ocean Sustainability, Год журнала: 2025, Номер 3

Опубликована: Апрель 4, 2025

Environmental and climate changes have placed increasing pressure on the resilience of marine ecosystems. In addition to these transformations, coastal environments are also affected by anthropogenic stressors, such as metal contamination. Bivalves play a crucial ecological role in estuarine This study aimed evaluate effects CO 2 -induced acidification, warming, mixed metals contamination mangrove mussel Mytella charruana . We evaluated DNA damage (strand breaks), lipid peroxidation (LPO) levels, reduced glutathione (GSH) content, well enzymatic activities S-transferase (GST) peroxidase (GPx) gills digestive glands. Additionally, neurotoxicity was assessed muscle tissues through acetylcholinesterase (AChE) activity. Laboratory experiments were conducted using sediments spiked with (Cu, Pb, Zn, Hg), alongside control group (non-spiked sediments), combining three pH levels (7.5, 7.1, 6.7) two temperatures (25 27°C). Five mussels per treatment (four replicates) exposed for 96 h. Two pools organisms each separated replicate ( n = 8) their gills, glands, muscles dissected biochemical biomarkers analyses. Temperature increase primary factors modulating antioxidant responses AChE activity muscle. However, when combined stressors integrity LPO. Acidification alone showed no effect any biomarker analyzed. Higher IBR values indicated exposure, even at concentrations below individual safety levels. Here, we provide insights from short-term experiment complex interactions between predicted scenarios, which change influenced associated mixture sediments. These findings contribute understanding organismal scenarios change, particularly environments.

Язык: Английский

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Eco-resilience of China’s mangrove wetlands: The impact of heavy metal pollution and dynamics

Environmental Research, Год журнала: 2025, Номер unknown, С. 121552 - 121552

Опубликована: Апрель 1, 2025

Язык: Английский

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Heavy metals contamination in Jakarta Bay sediment: geoaccumulation assessment and implication for environmental health

Marine Pollution Bulletin, Год журнала: 2025, Номер 216, С. 117983 - 117983

Опубликована: Апрель 22, 2025

Язык: Английский

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The Ecotoxicological Implications and Contamination Profile of Organochlorine Pesticides (OCPs), Organophosphorus Pesticides (OPPs), and Heavy Metals, in Tuticorin, Southeast Coast of India

Regional Studies in Marine Science, Год журнала: 2025, Номер unknown, С. 104237 - 104237

Опубликована: Май 1, 2025

Язык: Английский

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Cadmium dominance in heavy metal pollution: ecological risks and human health implications in the Guan River Estuary, China

Frontiers in Marine Science, Год журнала: 2025, Номер 12

Опубликована: Май 19, 2025

Estuarine ecosystems are vulnerable to anthropogenic heavy metal pollution. This study examines cadmium (Cd) dominance in pollution and its ecological/human health impacts China's Guanhe Estuary, a region heavily influenced by land-based inputs. Concentrations of six metals (Cu, Pb, Zn, Cd, Cr, As) were measured sediments muscle tissues 12 marine species across 11 sampling sites using atomic absorption fluorescence spectrometry. Ecological risks evaluated via load index (PLI), geo-accumulation (Igeo), potential ecological risk (E RI ). Health assessed target hazard quotient (THQ) (HI). The results showed that the sediment concentrations Cu, As 16.75±2.25, 8.39±0.91, 55.15±5.18, 0.10±0.01, 64.64±3.22, 11.92±0.99 mg/kg, respectively. PLI E indicated moderate low risk, Cd emerged as primary pollutant ecology, based on high Igeo Er indices. Bioaccumulation analysis revealed invertebrates, such crabs, shrimps, edible molluscs, accumulated higher metals, particularly compared fish. assessments no significant non-carcinogenic local residents (THQ/HI < 1) for most species. dominates due human activities like agricultural/industrial runoff bioavailability fine sediments. Despite risks, hotspots near Liezikou Estuary double jetty need stricter controls monitoring. These findings highlight key contaminant, informing global estuary cleanup efforts.

Язык: Английский

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Deciphering multi-media occurrence and anthropogenic drivers of potentially toxic elements in a rapidly urbanized estuary: A neural network-enhanced source apportionment

Marine Pollution Bulletin, Год журнала: 2025, Номер 218, С. 118178 - 118178

Опубликована: Май 20, 2025

Язык: Английский

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Ecological and human health risk evaluation of heavy metals along Southeast coast of India: suggested redresses

International Journal of Environmental & Analytical Chemistry, Год журнала: 2025, Номер unknown, С. 1 - 24

Опубликована: Май 21, 2025

Язык: Английский

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