CHEN Weihua1,2,PAN Na1,XU Dayong3
（1. School of Chemistry and Chemical Engineering，Shangrao Normal University, Shangrao 334000, China ;
2. Jiangxi Provincial Research Center of Targeting Pharmaceutical Engineering Technology, Shangrao Jiangxi 334001,China;
3. Anhui Polytechnic University, Wuhu 241000, China)
Abstract：We selected eastern tourist road of Wuyuan Scenic, China with the largest traffic flow as study object，and chose Zheyuan-Likeng section with the smallest traffic flow as the contrast. Cu, Pb, Zn, and Cd distributions and extent of contamination were determined by rational sampling, detection and risk assessment. Results include the following three respects. (1)Heavy metal contents decrease with increasing lateral distance, and the four sections with peak values are 0 m or 5 m away from roadbed, as Hexi-Likeng section, Xiaoqi-Jiangling section, Wangkou-Jiangwan section, and Jiangwan section. Certain heavy metals in left side are higher than the right side at different measuring point of each section, inflected by terrain and wind direction; (2) Zn, Cd, Pb, and Cu in each section are different at the scope exceeding the local background values because integrated internal and external factors influencing distribution of heavy metals in roadside soil are different; We adopted potential ecological risk index to evaluate pollution condition of four sections. Result show that Cd has the highest potential ecological risk, and Jiangwan section has the highest integrated potential ecological risk. The risk of Cu should not be overlooked as the pollution coefficient and scope of Cu exceeding the standard mostly in the four heavy metals.
Keywords: soil; wet digestion method; ecological risk assessment; Wuyuan; heavy metal content
EARTH AND ENVIRONMENT Vol.45, No.2, Tot No.316, 2017, Page 179-184
