Heavy metal distribution, contamination and analysis of sources - Intertidal zones of Sandu Bay, Ningde, China

Zhou, Shengjun; Kang, Ran; Ji, Chaonan; Kaufmann, Hermann

doi:10.1016/j.marpolbul.2018.08.056

Cited by 15 publications

(7 citation statements)

References 16 publications

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“…is a mandatory process carried out in order to dissolve various impurities present in water samples (Fang et al, 1991). The most commonly used methodology for HM digestion is acidification of water with nitric acid (41) (Klavinš et al, 2000;Turgut, 2003;Dippner and Pohl, 2004;Bolormaa et al, 2006;Huang et al, 2008;Edokpayi et al, 2016;Khan et al, 2017;Zhou et al, 2018). The second most applied method is filtration (20), where the surface water is filtered prior to analysis (Karadede and Ünlü, 2000;Kumar et al, 2016;Arefin et al, 2016).…”

Section: Data Collectionmentioning

confidence: 99%

Global evaluation of heavy metal content in surface water bodies: A meta-analysis using heavy metal pollution indices and multivariate statistical analyses

et al. 2019

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Water is polluted by increasing activities of population and the necessity to provide them with goods and services that use water as a vital resource. The contamination of water due to heavy metals (HMs) is a big concern for humankind; however, global studies related to this topic are scarce. Thus, the current review assesses the content of HMs in surface water bodies throughout the world from 1994 to 2019. To achieve this goal, multivariate analyses were applied in order to determine the possible sources of HMs. Among the analyzed HMs in a total of 147 publications, the average content of Cr, Mn, Co, Ni, As and Cd exceeded the permissible limits suggested by WHO and USEPA. The results of the heavy metal pollution index, evaluation index, the degree of contamination, water pollution and toxicity load showed that the examined water bodies are highly polluted by HMs. The results of median lethal toxicity index showed maximum toxicity in As, Co, Cr and Ni in the surface water bodies. Results of ingestion and dermal pathways for adults and children in the current analyzed review showed that As is the major contaminant. Moreover, Cr, Ni, As and Cd showed values that could be considered as a high risk for cancer generation via the ingestion pathway as compared to the dermal route. It is recommended that remediation techniques such as the introduction of aquatic phytoremediation plant species and adsorbents should be included in land management plans in order to reduce human risks.

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Section: Data Collectionmentioning

confidence: 99%

Global evaluation of heavy metal content in surface water bodies: A meta-analysis using heavy metal pollution indices and multivariate statistical analyses

et al. 2019

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“…Previous studies have indicated that heavy metals in surface sediment originate from various sources and could be primarily affected by three factors: (1) pollutant emissions from urban development and human activity; (2) adsorption and sequestration with organic matter and sulfide; and (3) natural weathering and erosion of rocks [ 23 , 24 , 25 ]. Therefore, correlation analysis and PCA were conducted to explore the relationships between the seven heavy metals, TOC, and sulfide in the surface sediment.…”

Section: Resultsmentioning

confidence: 99%

Spatiotemporal Trends, Sources and Ecological Risks of Heavy Metals in the Surface Sediments of Weitou Bay, China

Chen

Huang

Cai

2021

IJERPH

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Heavy metals are extremely harmful materials to marine ecosystems and human health. To determine the anthropogenic contributions and ecological risks in Weitou Bay, China, the spatiotemporal variations in the concentrations of heavy metals in surface sediment were investigated during spring 2008 and 2017. The results indicated that high concentrations of pollutants were generally located near the river mouths and along the coast of industrial areas. Principal component analysis indicated that heavy metal contents were mainly affected by industrial waste drainage, urban development, natural weathering and erosion, and interactions between organic matter and sulfides. The potential ecological risk assessment demonstrated that, in 2008, 82% of the sampling sites were at low risk, while 18% were at moderate risk. The situation had deteriorated slightly by 2017, with 73%, 18%, and 9% of stations in Waytou Bay at low, moderate, and very high risk, respectively. Cd was the most harmful metal, followed by Hg. These two elements accounted for more than 80% of the potential ecological risk index (RI) value. The present work analyzed the source of heavy metals, identified the major pollution elements and high risk areas, and provides guidance for pollution control and ecological restoration in Weitou Bay.

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“…Blank digestion was performed in the same way. Further detailed descriptions for all analytical procedures concerning the pretreatment of sediments, and of both fluviatile and seawater samples, can be found in the work of Zhou et al [25]. The elements analyzed in sea cucumbers and sea snails were As, Cd, Cr, Cu, Ni, Pb, V, and Zn.…”

Section: Sample Collection and Preparationmentioning

confidence: 99%

Extent and Sources of Heavy Metal Pollution from Discharging Rivers in the Bohai Region, China

Kang,

Zhou,

Chen

et al. 2024

Water

Self Cite

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Studies have investigated heavy metal (HM) contamination in the Bohai Sea, but primarily in seawater and associated sediments, or in single rivers. For the first time, 31 major rivers discharging into the Bohai Sea were analyzed, along with 27 uniformly distributed coastal seawater samples and selected invertebrates. The elements measured were As, Cd, Cr, Cu, Ni, Pb, V, and Zn. We calculated the ‘geo-accumulation index’, the ‘metal enrichment factor’, and the ‘contamination factor’, coupled with the ‘pollution load index’, and our findings suggested low-grade HM pollution, although two conspicuous associations of elements were found to stand out in particular: One is a combination of As, Cu, Cr, and V in seawater samples that may indicate pollution from intensive ship traffic. The other shows a significant pattern of Cr, Pb, and Zn in water samples from rivers discharging between Yantai and Weihai on the Shandong Peninsula at the south edge of the Bohai Sea. This is primarily a farming area, with a moderate share of industrial enterprises. Investigations including fertilizers and pesticides point to agricultural practices and textile printing/chrome tanneries as the causes of contamination. Overall, a significant decline was found in the HM load in the rivers, apart from those discharging into the Yellow Sea section.

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Heavy metal distribution, contamination and analysis of sources - Intertidal zones of Sandu Bay, Ningde, China

Cited by 15 publications

References 16 publications

Global evaluation of heavy metal content in surface water bodies: A meta-analysis using heavy metal pollution indices and multivariate statistical analyses

Global evaluation of heavy metal content in surface water bodies: A meta-analysis using heavy metal pollution indices and multivariate statistical analyses

Spatiotemporal Trends, Sources and Ecological Risks of Heavy Metals in the Surface Sediments of Weitou Bay, China

Extent and Sources of Heavy Metal Pollution from Discharging Rivers in the Bohai Region, China

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