关键词: 电子垃圾拆解区, 农作物, 重金属污染, 单项污染指数, 综合污染指数

Abstract: A survey on the heavy metal contents in edible parts was conducted for crops grown around e-waste disassembling areas. The results showed that the heavy metal concentrations in the edible parts were 0.08-10.56 mg·kg-1 for Cr, 0.02-0.76 mg·kg-1 for Cd, and 0.05-1.51 mg·kg-1 for Pb. The assessment of single factor pollution indexes indicated that the Pb pollution was most severe, with the pollution rate being 56.52%, while pollution rate of Cr and Cd were 39.13% and 34.78%, respectively. Comprehensive pollution index indicated that 65.22% of the crops were polluted, with the medium and heavy pollution grade being 13.04% and 30.43%, respectively. The absorption and accumulation of heavy metals had interspecific and intraspecific differences. Among the crops, the levels of heavy metal pollution could be ranked in the order from low to high as follows: cereals< beans < potatoes

Key words: e-waste disassembling areas, crops, heavy metals pollution, single pollution index, comprehensive pollution index