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[Distribution and potential ecological risk assessment of heavy metals in surface sediments of Hongze Lake].
Huan Jing Ke Xue. 2011 Feb; 32(2):437-44.HJ

Abstract

In order to investigated horizontal distribution patterns of heavy metals in surface sediments of Hongze Lake, heavy metal contents in every samples were measured by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) and Atomic Fluorescence spectrometry (AFS) and the potential ecological risks of each heavy metals were analyzed. The average contents of heavy metals Cu, Zn, Pb, Cd, Cr, Hg, As, Fe, Al and Mn are 34.99 mg/kg, 72.44 mg/kg, 18.82 mg/kg, 3.24 mg/kg, 57.59 mg/kg, 0.07 mg/kg, 23.67 mg/kg, 29.63 mg/g, 37.19 mg/g and 0.69 mg/g, respectively. Horizontal distribution patterns of every heavy metals (Cu, Zn, Pb, Cd, Fe, Al, Cr, Hg, Mn and As) in surface sediments were very similar. By impact of hydodynamical and topographical condition, the contents of heavy metals were significantly lower in the inflow river mouth areas than that of open water area in the eastern part of the lake, and that of bays and outflow river mouth areas. This distribution pattern belongs to Turbidity Flood Model. These heavy metals are highly related with each other positively, indicating that they are from the same pollution source. The geo-accumulation index (I(geo)) and the Hakanson potential ecological risk index were applied for assessing the status of sediment heavy metal enrichment and the extent of potential ecological risk. The pollution extent of heavy metals followed the order: Cd > As > Cu > Cr > Zn > Hg > Pb, while the single potential ecological risk of heavy metals followed the order: Cd > As > Hg > Cu > Pb > Cr > Zn. The pollution extent and potential ecological risk of Cd were the most serious among all heavy metals. The distribution pattern of Cd individual potential ecological risk indices is exactly the same as that of general potential ecological risk indices for all heavy metals, indicating the important contribution of Cd in the general indices. Analysis showed that heavy metal pollution and the potential ecological risk existed in three risk regions: the central open water area and outflow river mouth region (S9, S1 and S8), the northern bay region (S6) and the western bay region (S5).

Authors+Show Affiliations

Research Center of Lake Environment, Chinese Research Academy of Environmental Science, Beijing 100012, China. yuhui@craes.org.cnNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

chi

PubMed ID

21528565

Citation

Yu, Hui, et al. "[Distribution and Potential Ecological Risk Assessment of Heavy Metals in Surface Sediments of Hongze Lake]." Huan Jing Ke Xue= Huanjing Kexue, vol. 32, no. 2, 2011, pp. 437-44.
Yu H, Zhang WB, Yu JP. [Distribution and potential ecological risk assessment of heavy metals in surface sediments of Hongze Lake]. Huan Jing Ke Xue. 2011;32(2):437-44.
Yu, H., Zhang, W. B., & Yu, J. P. (2011). [Distribution and potential ecological risk assessment of heavy metals in surface sediments of Hongze Lake]. Huan Jing Ke Xue= Huanjing Kexue, 32(2), 437-44.
Yu H, Zhang WB, Yu JP. [Distribution and Potential Ecological Risk Assessment of Heavy Metals in Surface Sediments of Hongze Lake]. Huan Jing Ke Xue. 2011;32(2):437-44. PubMed PMID: 21528565.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Distribution and potential ecological risk assessment of heavy metals in surface sediments of Hongze Lake]. AU - Yu,Hui, AU - Zhang,Wen-Bin, AU - Yu,Jian-Ping, PY - 2011/5/3/entrez PY - 2011/5/3/pubmed PY - 2011/10/1/medline SP - 437 EP - 44 JF - Huan jing ke xue= Huanjing kexue JO - Huan Jing Ke Xue VL - 32 IS - 2 N2 - In order to investigated horizontal distribution patterns of heavy metals in surface sediments of Hongze Lake, heavy metal contents in every samples were measured by Inductively Coupled Plasma-Atomic Emission Spectrometry (ICP-AES) and Atomic Fluorescence spectrometry (AFS) and the potential ecological risks of each heavy metals were analyzed. The average contents of heavy metals Cu, Zn, Pb, Cd, Cr, Hg, As, Fe, Al and Mn are 34.99 mg/kg, 72.44 mg/kg, 18.82 mg/kg, 3.24 mg/kg, 57.59 mg/kg, 0.07 mg/kg, 23.67 mg/kg, 29.63 mg/g, 37.19 mg/g and 0.69 mg/g, respectively. Horizontal distribution patterns of every heavy metals (Cu, Zn, Pb, Cd, Fe, Al, Cr, Hg, Mn and As) in surface sediments were very similar. By impact of hydodynamical and topographical condition, the contents of heavy metals were significantly lower in the inflow river mouth areas than that of open water area in the eastern part of the lake, and that of bays and outflow river mouth areas. This distribution pattern belongs to Turbidity Flood Model. These heavy metals are highly related with each other positively, indicating that they are from the same pollution source. The geo-accumulation index (I(geo)) and the Hakanson potential ecological risk index were applied for assessing the status of sediment heavy metal enrichment and the extent of potential ecological risk. The pollution extent of heavy metals followed the order: Cd > As > Cu > Cr > Zn > Hg > Pb, while the single potential ecological risk of heavy metals followed the order: Cd > As > Hg > Cu > Pb > Cr > Zn. The pollution extent and potential ecological risk of Cd were the most serious among all heavy metals. The distribution pattern of Cd individual potential ecological risk indices is exactly the same as that of general potential ecological risk indices for all heavy metals, indicating the important contribution of Cd in the general indices. Analysis showed that heavy metal pollution and the potential ecological risk existed in three risk regions: the central open water area and outflow river mouth region (S9, S1 and S8), the northern bay region (S6) and the western bay region (S5). SN - 0250-3301 UR - https://www.unboundmedicine.com/medline/citation/21528565/[Distribution_and_potential_ecological_risk_assessment_of_heavy_metals_in_surface_sediments_of_Hongze_Lake]_ L2 - https://antibodies.cancer.gov/detail/CPTC-CTLA4-1 DB - PRIME DP - Unbound Medicine ER -