Heavy Metal Risk Assessment of Soils and Crops in the Intensive Mining Area of Gejiu, Yunnan Province

In order to investigate the heavy metal contamination of soil-crop in mining-intensive areas Gejiu stannary Yunnan Province and its risk human health, single-factor index method Nemero comprehensive were used evaluate metals (Cd As) soil areas, health evaluation model was study brought by residents through consumption maize, wheat broad beans. The results showed that mean values total As Cd area 146 2.32 mg·kg-1, which 8 10.5 times higher than background environment belonged pollution; enrichment coefficients maize 0.1% 5.7%, 0.3% 11.5%, fava beans 4.9%; indices four A, B, C, D 7.275, 6.797, 5.618, 5.060, respectively. indicated soils levels, ability all three crops stronger As, with being strongest, might be harmful children. may adults.