TY - JOUR
T1 - Spatial distribution and multiple sources of heavy metals in the water of Chaohu Lake, Anhui, China
AU - Li, G.
AU - Liu, G.
AU - Zhou, C.
AU - Chou, Chen-Lin
AU - Zheng, L.
AU - Wang, J.
N1 - Funding Information:
Acknowledgements The work was supported by the National Natural Science Foundation of China (No.40873070, 40903039), Research Foundation for Doctoral Program of Higher Education of China (no. 20093402110001), Special projects of major national science and technology (2009ZX05039-003) and National Foundation of Anhui Education (no. KJ2008A147). We thank the editor and reviewers for giving us much constructive comments.
PY - 2012/5
Y1 - 2012/5
N2 - In this study, a survey for the spatial distribution of heavy metals in Chaohu Lake of China was conducted. Sixty-two surface water samples were collected from entire lake including three of its main river entrances. This is the first systematic report concerning the content, distribution, and origin of heavy metals (Cu, Cr, Cd, Hg, Zn, and Ni) in the Chaohu Lake water. The results showed that heavy metals (Cu, Cr, Zn, and Ni) concentrations in the estuary of Nanfei River were relatively higher than those in the other areas, while content of Hg is higher in the southeast lake than northwest lake. Moreover, Cd has locally concentration in the surface water from the entire Chaohu Lake. The heavy metal average concentrations, except Hg, were lower than the cutoff values for the first-grade water quality (China Environment Quality Standard) which was set as the highest standard to protect the social nature reserves. The Hg content is between the grades three and four water quality, and other heavy metals contents are higher than background values. The aquatic environment of Chaohu Lake has apparently been contaminated. Both the cluster analysis (CA) and correlation analysis provide information about the origin of heavy metals in the Lake. Our findings indicated that agricultural activities and adjacent plants chimneys may contribute the most to Cd and Hg contamination of Chaohu Lake, respectively.
AB - In this study, a survey for the spatial distribution of heavy metals in Chaohu Lake of China was conducted. Sixty-two surface water samples were collected from entire lake including three of its main river entrances. This is the first systematic report concerning the content, distribution, and origin of heavy metals (Cu, Cr, Cd, Hg, Zn, and Ni) in the Chaohu Lake water. The results showed that heavy metals (Cu, Cr, Zn, and Ni) concentrations in the estuary of Nanfei River were relatively higher than those in the other areas, while content of Hg is higher in the southeast lake than northwest lake. Moreover, Cd has locally concentration in the surface water from the entire Chaohu Lake. The heavy metal average concentrations, except Hg, were lower than the cutoff values for the first-grade water quality (China Environment Quality Standard) which was set as the highest standard to protect the social nature reserves. The Hg content is between the grades three and four water quality, and other heavy metals contents are higher than background values. The aquatic environment of Chaohu Lake has apparently been contaminated. Both the cluster analysis (CA) and correlation analysis provide information about the origin of heavy metals in the Lake. Our findings indicated that agricultural activities and adjacent plants chimneys may contribute the most to Cd and Hg contamination of Chaohu Lake, respectively.
KW - ISGS
KW - Lake water
KW - Heavy metal distribution
KW - Chaohu Lake
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U2 - 10.1007/s10661-011-2149-9
DO - 10.1007/s10661-011-2149-9
M3 - Article
C2 - 21701891
VL - 184
SP - 2763
EP - 2773
JO - Environmental monitoring and assessment
JF - Environmental monitoring and assessment
IS - 5
ER -