CHEN Maohua^{1, 2} LIU Mingguang¹ GUO Bin¹ GAO Peng¹

 

（1．Fuyang Vocational and Technical College，Fuyang 236031，China;
2．Jiangsu Key Laboratory of Solid Organic Waste Utilization，Nanjing Agricultural University，Nanjing 210095，China）

 

Abstract：By means of field sampling and laboratory analysis, content distribution characteristics of Pb, Cr, Cu, Ni, Zn and Cd in suburban vegetable region soils of Fuyang City were analyzed. Assessment of heavy metal pollution was conducted using single factor pollution index, geo-accumulation index and potential ecological risk index. Results show that the average mass fraction of Pb, Ni, and Zn are above the background values in Anhui Province. The average mass fractions of Cd, Cu, and Cr do not exceed the average values of Anhui Province. In addition to partial region with exceeding Pb contents, all texted elements are in line with the national soil environmental quality standards. Results of the evaluations from single factor pollution index discover that Ni is a certain degree pollution metal in suburban vegetable region soils of Fuyang City, while the other districts are clean. Results of the evaluations of geo-accumulation index discover the different pollution degrees of Pb, Ni, and Zn in the study areas. The eco system risks caused by the study heavy metals are not obvious for the sampling points while soil of the entire study area is in mid integrated potential ecological risk.

 

Keywords：Heavy metal; single factor pollution index; geo-accumulation index; Potential ecological risk index

 

EARTH AND ENVIRONMENT Vol.45, No.3, Tot No.317, 2017, Page 322-328