Mercury Pollution of Soil-Crop System in Acid Precipitation Area

摘要

In acid precipitation area of Chongqing suburb the average of Hg in soil rose from 0.158 mg/kg in 1984 to 0.20 mg/kg in 1989, and Hg content of crops grown on these soils increased too. Both soil and vegetable Hg carne mainly from power plant emission, which caused Hg and acid precipitation pollution in environment and the Hg pollution of water, crops and milk in the area.