Distribution, origins, impact factors and ecological risks of metallic elements in the sediment from Changhua River estuary, Hainan Island, China

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

Опубликована: Май 22, 2025

Within the framework of global biogeochemical cycles, estuaries function as a critical interface that connects terrestrial and marine ecosystems. We assessed heavy metal pollution risk in Changhua River estuary area. The assessment focused on characteristics, spatial distribution, ecological risks, while also identifying potential origins metallic elements through application correlation analysis, principal component analysis (PCA), Positive Matrix Factorization (PMF) models. results showed that: (1) Sediments were predominantly sandy weakly alkaline properties, with significant heterogeneity concentrations. concentration metals, compared to their background values (BVs), could be ranked as: Nearshore: Pb > As Cd Cu Zn Hg Ni Cr; Inshore: Estuary: Cr. Particularly, inshore sediments registered mean surpassing BVs by 417.95% 187.33%, respectively. (2) sampling locations presented varying levels risk. Moderate (150 ≤ RI < 300) accounted for 24.14% sites, primarily located estuarine areas, extreme (300≤RI) was observed 6.90% concentrated within regions. identified most hazardous metals. (3) Regarding sources, mainly originated from coal burning, Pb, Zn, likely linked anthropogenic activities associated port operations. In contrast, Cr, Ni, derived natural agricultural residual accumulation fertilizers herbicides. Overall, human activities, including agriculture, aquaculture, transport, are primary contamination sediments. Effective management regular monitoring essential governance environment. Such practices can yield valuable insights continuous thereby supporting health resilience these vital environments.

Язык: Английский

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Effect of straw decomposition on hexavalent chromium removal by straw: Significant roles of surface potential and dissolved organic matter

Journal of Colloid and Interface Science, Год журнала: 2024, Номер 678, С. 946 - 954

Опубликована: Сен. 7, 2024

Язык: Английский

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Soil Heavy Metal Pollution in Upstream Bailang River, Eastern China: Spatial Analysis, Health Risks, and Pollution Source Identification

Soil and Sediment Contamination An International Journal, Год журнала: 2024, Номер unknown, С. 1 - 27

Опубликована: Июнь 6, 2024

The ecological and environmental concerns within Shandong Province's Bailang River basin in eastern China have garnered significant research attention. This study specifically delves into the issue of soil heavy metals (HM) pollution upstream area River. Diverse methodologies were employed to quantitatively assess status, implications, associated health risks posed by HM. Geostatistical methods facilitated a spatial analysis variations, while Principal Component Analysis (PCA) was utilized attribute sources pollutants. found be at moderate level pollution, with Cd (Coefficient Variation, CV = 37%), Ni (CV 49%), Hg 69%) identified as primary pollutants both quantitative analyses risk assessments. Overall, concentration HM higher western than zone, suggesting central zone. Human evaluations indicated that non-carcinogenic (Total Hazard Index – THI) for adults children met acceptable thresholds (0.11 0.98). However, 57.14% faced unacceptable risks, primarily attributed Chromium (Cr) Arsenic (As) exposure. Carcinogenic Risk TCRI) an risk. Oral intake method absorption. Qualitative major sources, including natural emissions traffic, coal combustion, agricultural activities, iron steel production. provides valuable insights safeguarding comprehensive evaluation pollution.

Язык: Английский

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Accumulation Pattern and Potential Ecological Risk of Heavy Metals in Topsoil as Affected by Diverse Sources in Different Ecosystems in Western Dabie Mountain

Forests, Год журнала: 2024, Номер 15(7), С. 1116 - 1116

Опубликована: Июнь 27, 2024

Soil heavy metal (HM) control has become a pressing global ecological and environmental issue, with significant focus on the western Dabie Mountain in China, region that is recognized for its barriers water sources. We analyzed concentrations, pollution status, potential risks of 10 HMs (i.e., Cu, +Pb, Zn, Cr, Ni, Co, Cd, As, Hg, Mn) topsoil different ecosystems this region. The effects four soil groups (Anthrosol, Fluvisols, Gleysol, Alisols) three texture types (sandy, clayey, loamy soils) above aspects were also analyzed. Positive Matrix Factorization (PMF) models performed to identify quantify sources contribution rates these HMs. Results showed level HM may be negligible, there was no risk. Of all metals, Pb Cd exhibited highest levels pollution. risk associated decreased from croplands urban further forests. Cu Co more likely accumulate Anthrosols, while Alisols Pb, Hg had higher overall clayey soils both than sandy soils. accumulation closely related organic matter clay contents. main can agricultural activities, parent material, mining, industrial vehicle emissions. These findings suggest special attention should paid Mountain. Future efforts reducing smelting, emissions, as well strengthening research migration patterns mechanisms

Язык: Английский

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Cadmium and Calcium Ions' Effects on the Growth of Pleurotus ostreatus Mycelia are Related to Phosphatidylethanolamine Content

Fungal Biology, Год журнала: 2024, Номер 128(7), С. 2190 - 2196

Опубликована: Сен. 2, 2024

Язык: Английский

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