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[Calculation of environmental dredging depth of heavy sediments in Zhushan Bay of Taihu Lake metal polluted].
Huan Jing Ke Xue. 2012 Apr; 33(4):1189-97.HJ

Abstract

Horizontal distribution of heavy metals in surface sediments of Zhushan Bay was investigated, and core sediment samples were collected in the representative area. Core sediments were divided into oxide layer (A), polluted layer (B), upper polluted transition layer(C1), lower polluted transition layer(C2) and normal mud layer(D) from top to bottom. The change of total contents of Cr, Ni, Cu, Zn, As, Cd, Hg, Pb and contents of biological available Cr, Ni, Cu, Zn, As, Cd, Pb with depths were analyzed. Ecological risk assessment of heavy metals in sediments was done by potential ecological risk index method. At last, environmental dredging depth was calculated. The results shows that the contents of Cr, Ni, Cu, Zn, As, Cd, Hg, Pb are 30.56-216.58, 24.07-59.95, 16.71-140.30, 84.31-193.43, 3.39-22.30, 0.37-1.59, 0.00-0.80 and 9.67-99.35 mg x kg(-1), respectively. The average concentrations of Cr, Ni, Cu, Zn, As, Cd, Hg, Pb are 79.74, 37.74, 44.83, 122.39, 10.39, 0.77, 0.14 and 40.08 mg x kg(-1), respectively. Heavy metals in the surface sediments of Zhushan Bay mainly distribute in the west bank and the estuaries of Taige canal, Yincun Port, and Huanshan River,and Cd pollution is relatively serious. There is an accumulative effect of heavy metals in Zhushan Bay, and the contents of biological available metals decrease with depths. Ecological risk grades of Cd in layer A and B are high, and the comprehensive potential ecological risk grades of each layer are in middle or low. The environmental dredging layers are A and B, and the average dredging depth is 0.39 m.

Authors+Show Affiliations

Research Center of Lake Eco-Environment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China. jiangxia@craes.org.cnNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

English Abstract
Journal Article
Research Support, Non-U.S. Gov't

Language

chi

PubMed ID

22720564

Citation

Jiang, Xia, et al. "[Calculation of Environmental Dredging Depth of Heavy Sediments in Zhushan Bay of Taihu Lake Metal Polluted]." Huan Jing Ke Xue= Huanjing Kexue, vol. 33, no. 4, 2012, pp. 1189-97.
Jiang X, Wang WW, Wang SH, et al. [Calculation of environmental dredging depth of heavy sediments in Zhushan Bay of Taihu Lake metal polluted]. Huan Jing Ke Xue. 2012;33(4):1189-97.
Jiang, X., Wang, W. W., Wang, S. H., & Jin, X. C. (2012). [Calculation of environmental dredging depth of heavy sediments in Zhushan Bay of Taihu Lake metal polluted]. Huan Jing Ke Xue= Huanjing Kexue, 33(4), 1189-97.
Jiang X, et al. [Calculation of Environmental Dredging Depth of Heavy Sediments in Zhushan Bay of Taihu Lake Metal Polluted]. Huan Jing Ke Xue. 2012;33(4):1189-97. PubMed PMID: 22720564.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Calculation of environmental dredging depth of heavy sediments in Zhushan Bay of Taihu Lake metal polluted]. AU - Jiang,Xia, AU - Wang,Wen-Wen, AU - Wang,Shu-Hang, AU - Jin,Xiang-Can, PY - 2012/6/23/entrez PY - 2012/6/23/pubmed PY - 2013/9/17/medline SP - 1189 EP - 97 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 33 IS - 4 N2 - Horizontal distribution of heavy metals in surface sediments of Zhushan Bay was investigated, and core sediment samples were collected in the representative area. Core sediments were divided into oxide layer (A), polluted layer (B), upper polluted transition layer(C1), lower polluted transition layer(C2) and normal mud layer(D) from top to bottom. The change of total contents of Cr, Ni, Cu, Zn, As, Cd, Hg, Pb and contents of biological available Cr, Ni, Cu, Zn, As, Cd, Pb with depths were analyzed. Ecological risk assessment of heavy metals in sediments was done by potential ecological risk index method. At last, environmental dredging depth was calculated. The results shows that the contents of Cr, Ni, Cu, Zn, As, Cd, Hg, Pb are 30.56-216.58, 24.07-59.95, 16.71-140.30, 84.31-193.43, 3.39-22.30, 0.37-1.59, 0.00-0.80 and 9.67-99.35 mg x kg(-1), respectively. The average concentrations of Cr, Ni, Cu, Zn, As, Cd, Hg, Pb are 79.74, 37.74, 44.83, 122.39, 10.39, 0.77, 0.14 and 40.08 mg x kg(-1), respectively. Heavy metals in the surface sediments of Zhushan Bay mainly distribute in the west bank and the estuaries of Taige canal, Yincun Port, and Huanshan River,and Cd pollution is relatively serious. There is an accumulative effect of heavy metals in Zhushan Bay, and the contents of biological available metals decrease with depths. Ecological risk grades of Cd in layer A and B are high, and the comprehensive potential ecological risk grades of each layer are in middle or low. The environmental dredging layers are A and B, and the average dredging depth is 0.39 m. SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/22720564/[Calculation_of_environmental_dredging_depth_of_heavy_sediments_in_Zhushan_Bay_of_Taihu_Lake_metal_polluted]_ DB - PRIME DP - Unbound Medicine ER -