Heavy metals distribution patterns and sedimentary fluxes in fine-grained sediments in the Changjiang Estuary and its adjacent areas

Chen Bin; Fan Dejiang; Guo Zhigang; Wang Liang; Li Weiran

doi:10.3969/j.issn.0253-4193.2014.11.012

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Chen Bin, Fan Dejiang, Guo Zhigang, Wang Liang, Li Weiran. Heavy metals distribution patterns and sedimentary fluxes in fine-grained sediments in the Changjiang Estuary and its adjacent areas[J]. Haiyang Xuebao, 2014, 36(11): 101-110. doi: 10.3969/j.issn.0253-4193.2014.11.012

Citation:

Chen Bin, Fan Dejiang, Guo Zhigang, Wang Liang, Li Weiran. Heavy metals distribution patterns and sedimentary fluxes in fine-grained sediments in the Changjiang Estuary and its adjacent areas[J]. Haiyang Xuebao, 2014, 36(11): 101-110. doi: 10.3969/j.issn.0253-4193.2014.11.012

Citation:

Chen Bin, Fan Dejiang, Guo Zhigang, Wang Liang, Li Weiran. Heavy metals distribution patterns and sedimentary fluxes in fine-grained sediments in the Changjiang Estuary and its adjacent areas[J]. Haiyang Xuebao, 2014, 36(11): 101-110. doi: 10.3969/j.issn.0253-4193.2014.11.012

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Heavy metals distribution patterns and sedimentary fluxes in fine-grained sediments in the Changjiang Estuary and its adjacent areas

doi: 10.3969/j.issn.0253-4193.2014.11.012

1.
Key Lab of Submarine Geosciences and Technology in the Ministry of Education, Ocean University of China, Qingdao 266100, China
2.
Department of Environmental Science and Engineering, Fudan University, Shanghai 200433, China

Received Date: 2013-12-09

Abstract

Abstract

The Changjiang River discharges large amounts of fine-grained sediments into the East China Sea (ECS) each year. Fine-grained sediment transports far distance and spreads widely when it enter the continental shelf,which makes it an excellent archive to explore the source to sink of sediment from river to continental shelf. In this paper,the ICP-AES method was used to determine the concentration of heavy metals of fine-grained surface sediments of 44 samples collected in the Changjiang Estuary and its adjacent areas. The spatial distribution patterns,sedimentary fluxes,and source to sink of these elements were discussed. The results show: (1) the spatial distribution patterns and sedimentary fluxes of heavy metals in the area are similar,which have high values in the Changjiang Estuary and the inner mud shelf,decreasing dramatically in southeastern direction;(2) The heavy metals in the fine-grained sediments in the study areas mainly originate from the Changjiang River; then they disperse in two ways,one along the inner shelf outside the Zhe-Min coast,the other along the Changjiang River diluted water spreading area and into the outer continental shelf. Our results suggest that the sub-aquatic Changjiang River delta and the inner shelf of ECS are dominant sinks for the heavy metals from the Changjiang River.
- the Changjiang Estuary,
- the East China Sea,
- surface sediment,
- heavy metal,
- sedimentary flux,
- source to sink

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References(41)

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