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[1]ZHANG Jia-chun,LIN Shao-xia,ZHANG Qing-hai,et al.Characteristics of Heavy Metal Pollution in Crops and Soil around Caohai Wetland in Guizhou Province[J].Research of Soil and Water Conservation,2014,21(03):273-278.

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Characteristics of Heavy Metal Pollution in Crops and Soil around Caohai Wetland in Guizhou Province

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 21 Number of periods: 2014 03 Page number: 273-278 Column: Public date: 2014-06-28

Title:: Characteristics of Heavy Metal Pollution in Crops and Soil around Caohai Wetland in Guizhou Province

Author(s):: ZHANG Jia-chun¹, LIN Shao-xia², ZHANG Qing-hai², HE Teng-bing¹, LIN Chang-hu³, DING Yu-juan¹, WEI Si-tao¹; 1. Guizhou University, Guiyang 550025, China;
2. Guizhou Academy of Test and Analysis, Guiyang 550002, China;
3. Guizhou Academy of Sciences, Guiyang 550001, China

Keywords:: heavy metals; pollution characteristics; enrichment abilities; Caohai wetland

CLC:: X131.3

DOI:: -

Abstract:: The edible parts of main crops and the corresponding root-zoning soil samples around the part of wetland in Caohai were collected to analyze and test the contents of Cd, Cr, Hg, Pb, As and Zn, and the enrichment abilities on heavy metals in test crops and the pollution level of heavy metals in soils and crops were studied and contrasted. The results showed that the average contents of soil heavy metal Zn, As, Cr did not exceed the background values in soils in Guizhou Province, the average values of other 3 kinds of heavy metals Pb, Cd, Hg were 1.24, 1.44, 7.5 times of the background values; compared with the standard of ‘China Food Contaminants’, the average content ranges of As, Cr, Zn, Cd and Pb in vegetables were acceptable. The level of single factor pollution about six kinds of heavy metals decreases in the order Hg > Pb > Cd > As > Cr > Zn, the levels of these metal in onions and radishes are at the safe level, other crops in a cordon line; the enrichment characteristics of heavy metals of different types of crops were obviously different, the enrichment coefficients of Cd, Hg, As, Pb in spinach are higher than other crops, the accumulation ability of heavy metals on Cr and Zn of radish leaves were stronger, the enrichment coefficients of Cr in maize was the lowest, the enrichment coefficient of Zn and Hg in the radish root is lowest, the enrichment coefficients of Cd and Pb in potato was the lowest, the enrichment coefficients of As in cabbage is the lowest.

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