中文摘要：

采用改进的Tessier连续提取法分析了焦家金矿土壤中不同赋存形态汞的含量，阐述了金矿水平剖面土壤中不同形态汞的分布特征及相互转化规律。结果表明，土壤中汞主要以残渣态存在，不同形态汞平均含量依次为：残渣态〉腐殖酸结合态〉强有机结合态〉水溶态〉铁锰氧化物结合态〉碳酸盐结合态〉离子交换态；金矿对土壤中不同形态汞的影响显著，除碳酸盐结合态外，其他各形态汞都有在金矿附近富集的现象；非残渣态汞占总汞的27％左右，金矿土壤中的汞具有较大的生物可利用性；金矿附近土壤中活性较高的形态（离子交换态、水溶态、碳酸盐结合态及铁锰氧化物结合态）占总汞比例较低，活性较低的形态（腐殖酸结合态及强有机结合态）占总汞比例较高。金矿开采活动可能对土壤中汞形态的分布造成影响。

英文摘要：

An improved Tessier sequential extraction method is used to analyze the concentration of different kinds of mercury in the soil of Jiaojia Gold Mine, this paper elaborates on the distribution characteristics of different mercury speciations in the soil of hori- zontal spatial of the mine. The results indicate that firstly, mercury in soil exists mainly in residue speciation, and the descending or- der of the average concentration of different speciations of mercury are as follows： residual〉humic acid〉strong organic〉water-sol- uble〉Fe/Mn oxide〉carbonate〉ion exchangeable. Secondly, the gold mine has a significant effect on different speciations of mercu- ry in soil and in addition to a carbonate combined state, a variety of speciations of mercury are enriched near the gold mine. Thirdly, the non-residual mercury accounts for about 27 % of the total mercury, the mercury in the soil of the gold mine has greater bioavail- ability. The speciation of mercury with high biological effectiveness in the soil near the gold mine（ion exchangeable, water-soluble, carbonate and Fe/Mn oxide） accounted for lower ratio of the total mercury. However, the speciation of mercury with low biological effectiveness（humic acid and strong organic）accounts for higher ratio of the total mercury. The activities of gold mining may affect the distribution of mercury speciation in the soil.