Spatial and Temporal Variations of Heavy Metals in Surface Sediments in Bohai Bay, North China

Shou-yi, Zhan; Peng, Shitao; Liu, Chunguang; Chang, Qing; Xu, Jian

doi:10.1007/s00128-010-9971-6

Cited by 59 publications

(22 citation statements)

References 21 publications

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“…The data of an 11-year monitoring program from 1997 to 2007 indicated that the mean concentrations of Cd, Cu, Hg, Pb and Zn in the surface sediments of the Bohai Bay were all within the range for MSQ Grade I, but all higher than the corresponding background values of sediments in this area (Table 2; Zhan et al, 2010). This indicated that these metals did increase to some extent due to the influence of human activities, although their concentrations were still within relatively satisfactory levels.…”

Section: The Situation Of the Bohai Baymentioning

confidence: 97%

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Pollution status of the Bohai Sea: An overview of the environmental quality assessment related trace metals

Gao

Zhou

Chen

2014

Environment International

339

170

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It is well recognized that the ecosystem of the Bohai Sea is being rapidly degraded and the Sea has basically lost its function as a fishing ground. Billions of funds have been spent in slowing down, halting and finally reversing the environmental deterioration of the Bohai Sea. Although trace metals are routinely monitored, the data with high temporal resolution for a clear understanding of biogeochemical processes in the ecosystem of the Bohai Sea are insufficient, especially in the western literature. In this review, status of trace metal contamination in the Bohai Sea is assessed based on a comprehensive review of their concentrations recorded in the waters, sediments and organisms over the past decades. Studies show that metal contamination in the Bohai Sea is closely associated with the fast economic growth in the past decades. Concentrations of trace metals are high in coastal areas especially in the estuaries. Alarmingly high metal concentrations are observed in the waters, sediments and organisms from the western Bohai Bay and the northern Liaodong Bay, especially the coasts near Huludao in the northernmost area of the Bohai Sea, which is being polluted by industrial sewage from the surrounding areas. The knowledge of the speciation and fractionation of trace metals and the influence of submarine groundwater discharge on the biogeochemistry of trace metals in the Bohai Sea is far from enough and related work needs to be done urgently to get a better understanding of the influence of trace metals on the ecosystem of the Bohai Sea. A clear understanding of the trace metal pollution status of the Bohai Sea could not be achieved presently for lack of systematic cooperation in different research fields. It is quite necessary to apply the environmental and ecological modeling to the investigation of trace metals in the Bohai Sea and then provide foundations for the protection of the environment and ecosystem of the Bohai Sea.

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Section: The Situation Of the Bohai Baymentioning

confidence: 97%

“…The combined effects of riverine and atmospheric sources may be responsible for higher concentrations of some trace metals in sediments occurring not only along the shoreline but also in the inner part of the Bohai Bay (Zhan et al, 2010).…”

Section: The Situation Of the Bohai Baymentioning

confidence: 99%

Pollution status of the Bohai Sea: An overview of the environmental quality assessment related trace metals

Gao

Zhou

Chen

2014

Environment International

339

170

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“…Coastal and estuarine ecosystems can play a significant role as reservoirs for many persistent organic and inorganic contaminants, such as nutrients and trace elements, through adsorption onto suspended matter and subsequent sedimentation (Zhan et al, 2010;Junakova et al, 2015). The main sources of contamination in estuaries are derived from catchment area runoff and include mining, industries, commercial waste, urban development, sewage discharge, agricultural and irrigation runoff, and atmospheric deposition (Karageorgis et al, 2012;Cheng et al, 2015;Singovszka et al, 2015;Kim et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Geochemical Assessment of Trace Element Pollution in Surface Sediments from the Georges River, Southern Sydney, Australia

Alyazichi

Jones

McLean

et al. 2016

Arch Environ Contam Toxicol

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Measurement of elevated trace elements is an important component of environmental assessment and management of estuarine marine sediments in systems adjacent to concentrated human activity. The present study surveys the estuarine sediments in selected tributary bays, creeks, and the upper segments of the Georges River system, NSW, Australia, which flows into the Tasman Sea through Botany Bay. A total of 146 surface sediment samples were analysed by X-ray fluorescence. Potential pollution of sediments was evaluated using potential load index, modified degree of contamination, and potential ecological risk index. The spatial distribution of trace elements varies between sites. Variable sources of contamination, including runoff from catchment areas, and emissions from watercraft and boatyards are contributing sources. Bay morphologies and their interactions with catchment and tidal flows play significant roles in the distribution of trace elements. The greatest concentration of trace elements occurs around discharge points and in the inner parts of bays that have high percentages of mud particles and organic matter. The lowest contamination by trace elements was found in sandy sediments along the shoreline and edges of the bays. Trace element distributions decline in concentration in residential-free areas and reach background levels in deeper sediment cores. The concentrations of trace elements were controlled by discharge points from the catchment area, marine boat activities, bay morphology, and sediment types (sand, silt, and clay). The highest pollutant concentrations are the result of past legal, but uncontrolled, discharge of waste from manufacturing into Salt Pan Creek. Creek.

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“…The accumulation of pollutants can be greater in enclosed and semi-enclosed areas where the exchange of water with the open seas is limited (Karageorgis et al, 2002). The watershed and estuarine environment has experienced dramatic reductions in species diversity and abundance, diseases in marine-cultured species, and habitat loss, which will ultimately destroy marine ecosystem structures and functions, and affect the health of human beings profoundly.Metals contamination of Bohai Sea have been investigated over the past few years (Feng et al, 2011;Meng et al, 2008;Wang and Wang, 2007;Zhan et al, 2010), however, almost all previous studies have focused on downstream areas (coastal and estuarine systems, namely marine and saline water systems), such as the estuaries, the coasts and the bays along the Bohai Sea. The spatial distribution of arsenic (As) and metals as well as the corresponding environmental risks within the coastal watersheds in upstream areas (surface water systems, namely freshwater systems), especially in southern Bohai Sea, have received less attention.…”

mentioning

confidence: 99%

“…Metals contamination of Bohai Sea have been investigated over the past few years (Feng et al, 2011;Meng et al, 2008;Wang and Wang, 2007;Zhan et al, 2010), however, almost all previous studies have focused on downstream areas (coastal and estuarine systems, namely marine and saline water systems), such as the estuaries, the coasts and the bays along the Bohai Sea. The spatial distribution of arsenic (As) and metals as well as the corresponding environmental risks within the coastal watersheds in upstream areas (surface water systems, namely freshwater systems), especially in southern Bohai Sea, have received less attention.…”

mentioning

confidence: 99%

Metals contamination along the watershed and estuarine areas of southern Bohai Sea, China

Wang

et al. 2013

Marine Pollution Bulletin

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a b s t r a c tDistributions and magnitude of metals in water, sediment and soil collected from the watershed and estuarine areas of southern Bohai Sea, were investigated. The largest dissolved concentrations of As, Cu and Zn in water were 347.70, 2755.00, 2076.00 lg/L, respectively, much higher than corresponding drinking water guidelines. The greatest concentrations of Cu, Zn, Cr, Ni, Pb, As and Cd in sediments were 1462.2, 1602.17, 196.43, 67.15, 63.54, 73.86 and 1.41 mg/kg, dw, respectively. The mean concentrations of Cu, Ni, Cd, Zn, Cr, Pb and As in soils were 24.67, 24.73, 0.14, 64.75, 56.52, 25.12 and 9.34 mg/kg, dw, respectively. Land use was confirmed to be an important factor of influence on soil metal concentrations. Metal contents along the watershed of Jie River were significantly greater than in other locations. The detection of metals in relatively high concentrations from different environmental matrices in this region indicates the necessity of further studies.Ó 2013 Elsevier Ltd. All rights reserved.In the past few decades, metals contamination in the environment has been attracting increasing concern around the world due to their toxicity, persistence and bioaccumulation characteristics (Cheng, 2003;Davis and Atkins, 2001). Unlike organic pollutants which can be degraded to less harmful components by biological or chemical processes, metals are considered as not naturally decomposable. The environmental metal concentrations are influenced by both natural and anthropogenic factors including parent materials, industrial and domestic sewage discharges, mining, smelting, e-wastes recycling (Xu et al., 2011). China is currently the worlds' second largest economy as a result of rapid industrial development over the past few decades. However, this rapid economic growth has been accompanied by considerable environmental side effects, especially pollution by metals. Coastal and estuarine areas are among the most important places for human inhabitants, yet they are often the ultimate receptacles of pollutants (Pan and Wang, 2012). The distribution and contamination levels of metals in the watershed, estuaries, coastal, bay and sea environments in China have been extensively investigated (Gao and Chen, 2012;Ip et al., 2007;Zhang et al., 2009).The Bohai Sea is a nearly enclosed interior sea located in northeast China and consists of Liaodong Bay, Bohai Bay, Laizhou Bay, and the middle sea (Meng et al., 2008). Due to intensive urbanization and industrialization, Bohai Sea and nearby coastal areas and estuaries have severe metal pollution problems (Wang et al., 2011b). Particularly, its proximity to Beijing, the capital of China, makes it one of the busiest seaways in the world . Large amounts of metals are carried into this sea through either direct discharges or loads from rivers, such as the Yellow River, Liaohe River and Xiaoqing River. For example, the Liaohe River discharged 390 t of metals into the sea in 2002, and the Yellow River totally discharged 200 t of metals in 2003 (Wang andWang, 2007). The...

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Spatial and Temporal Variations of Heavy Metals in Surface Sediments in Bohai Bay, North China

Cited by 59 publications

References 21 publications

Pollution status of the Bohai Sea: An overview of the environmental quality assessment related trace metals

Pollution status of the Bohai Sea: An overview of the environmental quality assessment related trace metals

Geochemical Assessment of Trace Element Pollution in Surface Sediments from the Georges River, Southern Sydney, Australia

Metals contamination along the watershed and estuarine areas of southern Bohai Sea, China

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