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  • Title: [Evaluation on Heavy Metal Pollution and Its Risk in Soils from Vegetable Bases of Hangzhou].
    Author: Gong MD, Zhu WQ, Gu YQ, Li SY, Jiana T, Tuni K.
    Journal: Huan Jing Ke Xue; 2016 Jun 08; 37(6):2329-2337. PubMed ID: 29964904.
    Abstract:
    With the purpose of investigation on heavy metal contamination in soils from vegetable bases of Hangzhou, adopting field investigation and indoor analysis methods, the contents of heavy metals as Cu, Zn, Pb, Cd, Cr, As and Ni, together with their relevance to the physicochemical properties of the 203 soils from 30 vegetable bases in 10 districts of Hangzhou were studied. The results showed that the contents of heavy metals such as Zn,Cr,As,Ni generally didn't exceed the standard, while the contents of heavy metals such as Cu, Pb, Cd exceeded it. The results from synthetic pollution evaluation showed that the soils were slightly polluted in soils from vegetable bases of Hangzhou, which were mainly caused by Cd pollution. Furthermore, there was slight potential ecological hazard for Cu, Zn, Pb, Cr, As and Ni but strong potential ecological hazard for Cd, and medium comprehensive ecological hazard as a whole for all the heavy metals in soils from vegetable bases of Hangzhou. The correlation analysis indicated that the contents of Cu, Zn, Pb, As, Cd were greatly influenced by the soil physicochemical property. Thus, measures must be taken for the prevention and controlling of heavy metal pollution in the soils from vegetable bases in Hangzhou, especially for that of Cd.
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