The environmental behavior of mercury in contaminatedsites

对小型金矿区汞的分布进行了调查。村内大气汞浓度为数μg m-3，作业场所汞浓度为30μg m-3。河水中汞的最高浓度约为10μg L-1。在土壤样品中，总汞和甲基汞浓度随土层深度的增加而降低。这些值与总有机碳含量呈显著正相关。事实表明，通过空气输送的汞沉积在地面上，并吸附在有机物上。

Distribution of mercury around small scale gold mining area had been investigated. The atmospheric concentration of mercury in the village was several μg m-3and that in the work place was 30 μg m-3. The highest concentration of mercury in river water was about 10 μg L-1.In soil samples, total mercury and methylmercury concentrations decreased with depth from the soil surface. The values showed significant positive relations with total organic carbon content. The fact suggests that the transported mercury through the air deposits on the ground surfaces and adsorb on the organic matter.