ArticleEcotoxicology (London, England)2013
Distribution and pollution, toxicity and risk assessment of heavy metals in sediments from urban and rural rivers of the Pearl River delta in southern China.
Article in Ecotoxicology (London, England), 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers.
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Who cites it
25 citing papers in PubMed.
- Distribution, source apportionment, and risk analysis of heavy metals in river sediments of the Urmia Lake basin.Scientific reports · 2022Article
- Pollution, Ecological Risk and Source Identification of Heavy Metals in Sediments from the Huafei River in the Eastern Suburbs of Kaifeng, China.International journal of environmental research and public health · 2022Article
- Evaluation of pollution indices, health hazards and source identification of heavy metal in dust particles and storm trajectory simulation using HYSPLIT model (Case study: Hendijan center dust, southwest of Iran).Environmental monitoring and assessment · 2022Article
- Potential ecological risk assessment of heavy metals (trace elements) in coastal soils of southwest Iran.Frontiers in public health · 2022Article
- Pilot-scale constructed bypass channel for urban river restoration: the remedial efficiency and the variance in biodiversity.Environmental science and pollution research international · 2021Article
- Spatial distribution, risk assessment, and source identification of pollutants around gold tailings ponds: a case study in Pinggu District, Beijing, China.Environmental monitoring and assessment · 2021Article
- Concentrations, Distribution, and Pollution Assessment of Metals in River Sediments in China.International journal of environmental research and public health · 2021Review
- Seasonal variation of potentially toxic metal contamination in Yamuna riverine ecosystem, Delhi, India.Environmental monitoring and assessment · 2021Article
- Effects of cadmium addition on net nitrogen mineralization processes in the urban constructed wetland soils of a Chinese delta.Environmental geochemistry and health · 2021Article
- Carcinogenic-potential ecological risk assessment of soils and wheat in the eastern region of Konya (Turkey).Environmental science and pollution research international · 2021Article
- Heavy metal concentrations and associated health risks in edible tissues of marine nekton from the outer Pearl River Estuary, South China Sea.Environmental science and pollution research international · 2021Article
- Assessment of the impact of 2019 Karun River flood on river sediment in Ahvaz city area, Iran.Environmental monitoring and assessment · 2020Article
- Article
- Analysis of soil risk characteristics by comprehensive assessment in an industrial area of China.Environmental science and pollution research international · 2018Article
- Distribution of heavy metals and associated human health risk in mine, agricultural and roadside soils at the largest chromite mine of India.Environmental geochemistry and health · 2018Article
- Heavy metal contamination in river water and sediments of the Swarnamukhi River Basin, India: risk assessment and environmental implications.Environmental geochemistry and health · 2018Article
- Lethal and sublethal effects of metal-polluted sediments on Chironomus sancticaroli Strixino and Strixino, 1981.Ecotoxicology (London, England) · 2018Article
- Heavy metal contamination status and source apportionment in sediments of Songhua River Harbin region, Northeast China.Environmental science and pollution research international · 2017Article
- Application of ecological risk indicators for the assessment of Greek surficial sediments contaminated by toxic metals.Environmental monitoring and assessment · 2016Article
- Cadmium exposure and the risk of breast cancer in Chaoshan population of southeast China.Environmental science and pollution research international · 2015Article
Corrections and comments
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Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Sediments were collected from the upper, middle and lower reaches of both urban and rural rivers in a typical urbanization zone of the Pearl River delta. Six heavy metals (Cd, Cr, Cu, Ni, Pb and Zn) were analyzed in all sediment samples, and their spatial distribution, pollution levels, toxicity and ecological risk levels were evaluated to compare the characteristics of heavy metal pollution between the two rivers. Our results indicated that the total contents of the six metals in all samples exceeded the soil background value in Guangdong province. Based on the soil quality thresholds of the China SEPA, Cd levels at all sites exceeded class III criteria, and other metals exhibited pollution levels exceeding class II or III criteria at both river sites. According to the sediment quality guidelines of the US EPA, all samples were moderately to heavily polluted by Cr, Cu, Ni, Pb and Zn. Compared to rural river sites, urban river sites exhibited heavier pollution. Almost all sediment samples from both rivers exhibited moderate to serious toxicity to the environment, with higher contributions from Cr and Ni. A "hot area" of heavy metal pollution being observed in the upper and middle reaches of the urban river area, whereas a "hot spot" was identified at a specific site in the middle reach of the rural river. Contrary metal distribution patterns were also observed along typical sediment profiles from urban and rural rivers. However, the potential ecological risk indices of rural river sediments in this study were equal to those of urban river sediments, implying that the ecological health issues of the rivers in the undeveloped rural area should also be addressed. Sediment organic matter and grain size might be important factors influencing the distribution profiles of these heavy metals.
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