Trace metals in the surface sediments of the intertidal Jiaozhou Bay, China: Sources and contamination assessment

Xu, Fu-Liu; Qiu, Longwei; Cao, Yingchang; Huang, Ji; Liu, Zhao‐Qing; Tian, Xiaodan; Li, Anchun; Yin, Xue‐Bo

doi:10.1016/j.marpolbul.2016.01.019

Cited by 73 publications

(20 citation statements)

References 39 publications

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“…We compared the metal concentrations from the Dagu River estuary area to those of other estuaries and coastal areas ( Table 1). The metal concentrations in the Dagu River Estuary were much lower than those in the intertidal Jiaozhou Bay [9], Coastal Bohai Bay [52], Changjiang River Estuary [53] except for Pb, and Pearl River Estuary [54]. However, they were significantly higher than those found in Liaodong Bay for Cu and Cr [43], Luanhe River Estuary for Cu, Zn, Cr and Hg [4], Laizhou Bay for Cu, Pb, Zn, Cr [55], and Changjiang River Estuary for Pb.…”

Section: Heavy Metals and Metalloids Concentrationsmentioning

confidence: 82%

“…Rivers play an important role in the development of the regional economy. However, excessive human activities such as industrial production, agricultural irrigation and domestic water use has caused the river to become a discharge channel for industrial and domestic pollutants [8,9]. Coupled with runoff and sediment load that has drastically reduced, the dilution and absorptive capacity of the river has correspondingly dropped, and environmental risks are becoming increasingly severe.…”

Section: Introductionmentioning

confidence: 99%

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Distribution, Enrichment and Transport of Trace Metals in Sediments from the Dagu River Estuary in the Jiaozhou Bay, Qingdao, China

et al. 2019

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26 river bank sediments and 15 estuary seafloor sediments were sampled from the Dagu River and the estuary of Northwestern Jiaozhou Bay to determine contaminations of heavy metals and metalloids (Cu, Pb, Zn, Cr, Cd, Hg and As). The trace metal contents in sediment from the estuary area were much higher than those of the river. Correlation analysis showed that except for Pb, the metals were mainly controlled by the grain size, and enriched by adsorption of aluminosilicate minerals, Fe/Mn oxides and organic matter in river and estuary sediments. In addition to Cu in some stations, the metals met the requirements of the marine organism and humans for the quality of the marine environment. The concentrations of Cu, Pb, Cr, Hg and As were between the threshold effect level (TEL) and probable effect level (PEL), indicating those metals might have occasional adverse effects. Results of Enrichment Factor values revealed that the entire study area was enriched in Pb and Hg, at moderate environmental risk, but the estuary was more significant. Pb and Hg contaminations in this area were mainly from coal combustion and automobile emissions. River runoff and atmospheric deposition dominated the metals distribution and enrichment in the study area. Contaminants in sediments entering the estuary were further transported to the south and east under the river runoff and reciprocating current in the Jiaozhou Bay.

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Section: Heavy Metals and Metalloids Concentrationsmentioning

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Distribution, Enrichment and Transport of Trace Metals in Sediments from the Dagu River Estuary in the Jiaozhou Bay, Qingdao, China

et al. 2019

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“…Therefore, a variety of evaluation methods for heavy metals have been developed by international organizations and conventions, which have been applied to evaluate heavy metal pollution and the potential ecological risks in the sediments. These methods are associated with the enrichment factor, pollution degree, pollution load index, pollution factor, and geo-accumulation index, which may be mainly used to evaluate the ecological risks according to the ratio of a single heavy metal concentration to the background value [14][15][16][17][18][19]. However, these methods neither provide information on the toxicity of heavy metals nor indicate the comprehensive toxic effects in the overall heavy metal assemblage.…”

Section: Introductionmentioning

confidence: 99%

Evaluating ecological risks and tracking potential factors influencing heavy metals in sediments in an urban river

Liu¹,

Yu²,

Gao³

et al. 2020

Preprint

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Background Heavy metal pollution of aquatic systems is a global issue that has received considerable attention. Canonical correlation analysis (CCA), principal component analysis (PCA), and potential ecological risk index (PERI) have been applied to heavy metal data to trace potential factors, identify regional differences, and evaluate ecological risks. Sediment cores of 200 cm in length were taken using a drilling platform at 10 sampling sites along the Xihe River, an urban river located in western Shenyang City, China, divided into 10 layers (20 cm each). The concentrations of the As, Cd, Cr, Cu, Hg, Ni, Pb and Zn were measured for each layer. Eight heavy metals, namely Pb, Zn, Ag, Cd, Cr, Cu, Ni, and Hg, were measured for each layer in this study. Results The average concentrations of the As, Cd, Cu, Hg, and Zn were significantly higher than their background values in soils in the region, and mainly gathered at 0–120 cm in depth in the upstream, 0–60 cm in the midstream, and 0–20 cm downstream. This indicated that these heavy metals were derived from the upstream areas where a large quantity of effluents from the wastewater treatment plants enter the river. Ni, Pb, and Cr were close or slightly higher than their background values. The decreasing order of the average concentration of the Cd was upstream > midstream > downstream, so were the Cr, Cu, Ni and Zn. The trend of the average concentration of the As was different to the Cd; being highest midstream, followed by upstream and then downstream. The potential factors of heavy metal pollution were Cd, Cu, Hg, Zn, and As concentrations, especially Cd and Hg, whose ecological risks were much higher than those of Ni, Cr, and Pb. The ecological risk levels of all heavy metals were much higher upstream than midstream and downstream. Conclusions Industrial discharge was the dominate source for eight heavy metals in the surveyed area, and rural domestic sewage has a stronger influence on the Hg pollution than industrial pollutants. These findings indicate that effective management strategies should be developed to protect the environmental quality of urban rivers.

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“…As the intersection of marine and terrestrial environments, the intertidal zone performs significant hydrological and ecological functions and is driven by both natural forces and human activities (Qian et al 2016). Sediments accumulate at the junction of liquid and solid phases and are one of the major reservoirs of heavy metals from both natural and anthropogenic sources (Xu et al 2016a;Zhang and Gao 2015). As environmental conditions change, sediments become a potential secondary source of heavy metals that could be released back into the water column (Pereira et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Distribution and contamination assessment of arsenic and mercury in surface sediments from the intertidal zone of Yantai Sishili Bay, China

Wang

Pan

Han

et al. 2018

Human and Ecological Risk Assessment: An International Journal

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Sixty surface sediment samples from the intertidal zone of Yantai Sishili Bay (YSB) have been analyzed for arsenic (As) and mercury (Hg) to evaluate their contamination levels and potential ecological risks. Concentrations of As and Hg ranged from 7.01-23.56 and 0.00-0.01 mg g ¡1 in the dry season; during the wet season, the corresponding data were 1.44-6.17 and 0.00-0.02 mg g ¡1. The geoaccumulation index (I geo) and potential ecological risk index (E r i) were used to conduct a pollution assessment. The results demonstrated that the intertidal zone of YSB has good sediment quality and that As and Hg are not likely to cause negative environmental impacts in the region.

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Trace metals in the surface sediments of the intertidal Jiaozhou Bay, China: Sources and contamination assessment

Cited by 73 publications

References 39 publications

Distribution, Enrichment and Transport of Trace Metals in Sediments from the Dagu River Estuary in the Jiaozhou Bay, Qingdao, China

Distribution, Enrichment and Transport of Trace Metals in Sediments from the Dagu River Estuary in the Jiaozhou Bay, Qingdao, China

Evaluating ecological risks and tracking potential factors influencing heavy metals in sediments in an urban river

Distribution and contamination assessment of arsenic and mercury in surface sediments from the intertidal zone of Yantai Sishili Bay, China

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