Distribution and pollution assessment of heavy metals in surface sediments in Xiaoqing river estuary and its adjacent sea of Laizhou bay

Abstract Surface sediment samples were collected from four areas (the Jingdezhen Industrialized Area (JDZ), Upstream (UP), the Dexing Mining Area (DX), and Downstream (DM)) to investigate the concentration and chemical composition of heavy metals. The sediments were analysed for Cu, Zn, Pb, Cd, Cr, As, and Ni using a sequential extraction scheme according to the improved BCR (European Community Bureau of Reference) method. The obtained results show that the maximum values of Cu (793.52 μg·g−1), Zn (72.09 μg·g−1), Pb (222.19 μg·g−1), and Cd (1.60 μg·g−1) were collected from the DX sampling area, while the JDZ area had the highest concentrations of Cr (97.09 μg·g−1), As (318.05 μg·g−1), and Ni (66.35 μg·g−1). The majority of metal values far exceeded their corresponding background values. The risk analysis of geo-accumulation index (Igeo) indicated that the heavy metals Cu and As were the main pollution factors and each element of the pollution degree followed the order of: Cu > As > Pb > Cd > Cr > Zn. Metal partitioning characteristics were also considered and more than 80% of metals show potential bioavailability and toxic effects.

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Distribution and contamination assessment of heavy metals in surface sediments of the Luanhe River Estuary, northwest of the Bohai Sea

Marine Pollution Bulletin ◽

10.1016/j.marpolbul.2016.05.020 ◽

2016 ◽

Vol 109 (1) ◽

pp. 633-639 ◽

Cited By ~ 46

Author(s):

Jinqing Liu ◽

Ping Yin ◽

Bin Chen ◽

Fei Gao ◽

Hongying Song ◽

...

Keyword(s):

Heavy Metals ◽

Bohai Sea ◽

Surface Sediments ◽

River Estuary ◽

Contamination Assessment ◽

The Bohai Sea

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Distribution and Pollution Assessment of Heavy Metals and Petroleum Hydrocarbon in Surface Sediments from Chenglingji Port

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.675-677.510 ◽

2014 ◽

Vol 675-677 ◽

pp. 510-515

Author(s):

Hong Xia Xiong ◽

Xin Lei Liu ◽

Chang Bing Liu ◽

Xin Bin Liu

Keyword(s):

Heavy Metals ◽

Petroleum Hydrocarbon ◽

Surface Sediments ◽

Geoaccumulation Index ◽

Pollution Assessment ◽

Dongting Lake ◽

Risk Level ◽

Hydrocarbon Content ◽

Standard Value ◽

Factor Index

Concentration of 4 heavy metals (Cu, Pb, Zn, Cd) and petroleum hydrocarbon in the surface sediments collected from Chenglingji, Dongting Lake, were quantitatively analyzed. Distribution characteristics and possible sources of the heavy metals and petroleum hydrocarbon were discussed. Methods of single-factor index and geoaccumulation index were adopted to evaluate the potential ecological risks of heavy metal. The results showed that Cd was seriously polluted and in a strong ecological risk level; Cu, Pb and Zn pollution was mild in Chenglingji Port, Dongting Lake. Petroleum hydrocarbon content of nearshore sediment was low exclude of area near Chenglingji Port, which significantly exceeded the standard value. And the content of petroleum hydrocarbon decreased with the distance far away from the harbor.

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