Spatial distribution and risk assessment of heavy metals in sediments of Shuangtaizi estuary, China

Li, Chen; Song, Chengwen; Yin, Yanyan; Sun, Menghan; Tao, Ping; Shao, Mingan

doi:10.1016/j.marpolbul.2015.05.051

Cited by 58 publications

(21 citation statements)

References 23 publications

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“…The Liao River Oilfield, which is the third largest oil field in China, mainly distributes around Panjin City around Shuangtaizi Estuary. Previous studies have investigated the metal pollution in this area (Li et al, 2015;Li et al, 2017;Yang et al, 2015), and one conclusion is that Cd and Hg were the dominant metal contaminations in terms of spatial distribution and potential ecological risk. The results of the present study were similar to those of previous studies, thereby demonstrating that Cd and Hg were significantly enriched in the sediment of the Shuangtaizi Estuary.…”

Section: Situation Of Shuangtaizi Estuarymentioning

confidence: 99%

Comprehensive large-scale investigation and assessment of trace metal in the coastal sediments of Bohai Sea

Gao

et al. 2018

Marine Pollution Bulletin

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The Bohai Sea is characterized as a semi-closed sea with limited water exchange ability, which has been regarded as one of the most contaminated regions in China and has attracted public attention over the past decades. In recent years, the rapid industrialization and urbanization around the coastal region has resulted in a severe pollution pressure in the Bohai Sea. Although efforts from official government and scientific experts have been made to protect and restore the marine ecosystem, satisfactory achievements were not gained. Moreover, partial coastal areas in the Bohai Sea seemingly remain heavily polluted. In this study, we focused on five coastal regions around the Bohai Sea to study the spatial distribution pattern of trace elements in the sediments and their ecological risk. A total of 108 sediment samples were analyzed to determine the contamination degree of trace elements (Cu, Cd, As, Pb, Zn, Cr, and Hg). Contamination factor (CF), pollution load index (PLI), geoaccumulation index (I), and potential ecological risk index (PERI) were utilized to assess the pollution extent of these metals. Spatial distribution patterns revealed that the sedimentary environments of coastal Bohai were in good condition, except Jinzhou Bay, according to the Marine Sediment Quality of China. The concentrations of Hg and Cd were considerably higher than the average upper crust value and presented high potential ecological risk and considerable potential ecological risk, respectively. The overall environment quality of the coastal Bohai Sea does not seem to pose an extremely serious threat in terms of metal pollution. Thus, the government should continue implementing pollution control programs in the Bohai Sea.

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Section: Situation Of Shuangtaizi Estuarymentioning

confidence: 99%

Comprehensive large-scale investigation and assessment of trace metal in the coastal sediments of Bohai Sea

Gao

et al. 2018

Marine Pollution Bulletin

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“…A large quantity of hazardous chemicals (e.g., heavy metals and persistent organic pollutants) can be absorbed by suspended solids and then accumulate in sediments. In particular, heavy metals may be transformed into persistent metallic compounds with high toxicity, that first bioaccumulate in organisms, subsequently magnify in the food chain, and ultimately threaten human health [13,14]. However, they are easily released into water columns worldwide under altered pH and redox potential, hydrodynamic disturbances, and movement of benthic biota [11,15], which have posed severe threats to the aquatic flora and fauna due to their toxicity, ubiquity, and persistence.…”

Section: Introductionmentioning

confidence: 99%

Priority Pollutants in Water and Sediments of a River for Control Basing on Benthic Macroinvertebrate Community Structure

Liu

Jin

Shi

et al. 2019

Water

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Understanding the drivers of macroinvertebrate community structure is fundamental for adequately controlling pollutants and managing ecosystems under global change. In this study, the abundance and diversity of benthic macroinvertebrates, as well as their chemical parameters, were investigated quarterly from August 2014 to April 2015 in four reaches of the Huai River basin (HRB). The self-organizing map (SOM) algorithm and canonical correspondence analysis (CCA) were simultaneously applied to identify the main factors structuring the benthic community. The results showed that the benthic community structure was always dominated by gastropoda and insecta over seasons and presented obvious spatial and temporal heterogeneity along different pollution levels. The insects were always the top contributors to number density of the benthic community, except for the summer, and the biomass was mainly characterized by mollusca in all seasons. Statistical analysis indicated that TN and NH3-N in water, as well as Hg, As, Cd, and Zn in sediments, were the dominant factors structuring the community, which determined the importance of sediment heavy metal concentrations in explaining the benthic community composition in comparison with other factors. These major factors should be given priority in the process of river pollutant control, which might be rated as a promising way to scientifically improve river health management and ecological restoration.

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“…A variety of sediment properties can influence toxic metals in the sediment, including organic matters. Previous studies show that the levels, speciation, and distributions of HMs in sediment were found to be closely associated with TOC content (Chakraborty et al 2015;Li et al 2015). Generally, HMs have a high tendency to be adsorbed onto fine particles with higher organic matters that have a higher surface area (Duan et al 2015;Cheng et al 2019).…”

Section: Relationship Between Hms Concentrations and Toc And Ton Contentsmentioning

confidence: 97%

“…Compared with those reported in the polluted Jinzhou Bay (BS) (1.5-3699 μg g −1 , Wang et al 2010;Fan, Xu, and Wang 2014) listed in Table 1. The Zn, Pb, Cu, and Cd levels in this study region were much lower, while compared with those reported in the Liaodong Bay and Bohai Bay (BS), the observed concentrations of Zn, Cr, Ni, Pb, Cu, As, and Hg in this region were comparable to those reported in these two bays (Zn (58.7-71.8 μg g −1 ), Cr (60.8 μg g −1 ), Ni (22.6 μg g −1 ), Pb (6.9-31.8 μg g −1 ), Cu (6.5-20.0 μg g −1 ), As (8.3-11.4 μg g −1 ), and Hg (0.04-0.05 μg g −1 ) (Hu et al, 2012;Lin et al, 2012;Li et al, 2015). These results suggest that the ECS inner shelf was moderately polluted by HMs.…”

Section: Hms Concentrations In the Ecs And Comparisons With Other Regionsmentioning

confidence: 99%

Distribution of eight heavy metals in the inner shelf sediments of East China Sea: Risk assessments and sources analysis

Wang

Zhang

2021

Ecosyst Health Sustain

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Although numerous studies on heavy metals (HMs) in sediments have been carried out in the East China Sea (ECS), the knowledge on the recent pollution levels of HMs in coastal region remains not well understood due to the rapid developments of urbanization in eastern China. In this study, 23 surface samples and 4 core samples are collected in the inner shelf of the ECS. The average dry-weight concentrations follow the descending order of Zn,

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Spatial distribution and risk assessment of heavy metals in sediments of Shuangtaizi estuary, China

Cited by 58 publications

References 23 publications

Comprehensive large-scale investigation and assessment of trace metal in the coastal sediments of Bohai Sea

Comprehensive large-scale investigation and assessment of trace metal in the coastal sediments of Bohai Sea

Priority Pollutants in Water and Sediments of a River for Control Basing on Benthic Macroinvertebrate Community Structure

Distribution of eight heavy metals in the inner shelf sediments of East China Sea: Risk assessments and sources analysis

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