Investigation of influences of environmental factors as for mercury elution and mercury methylation in the soil

以日本典型土壤（Kuroboku土、褐林土、红黄土）为材料，经6个月的稳定处理，制备了汞浓度为100ppm、10ppm的人工污染土壤。我们对这些土壤进行了近3个月的环境因素培养实验，然后对每种土壤中汞的化学变化进行了研究。实验结果表明，与孵育实验的起始点相比，每种土壤的总汞浓度的变化没有被识别出来。而黑roboku土壤甲基汞含量（100ppm）的年代性明显增高。当浓度为10ppm时，红黄土的甲基汞浓度高于其他土壤。此外，红黄土壤的溶解汞浓度（100ppm、10ppm）也高于其他人工汞污染土壤。

Artificially contaminated soils that were contaminated by mercury based on 100 ppm ,10ppm as mercury concentration were made by using typical soil in Japan( Kuroboku soil, Brown forest soil, Red yellow soil) with stabilization of 6 month. These soils were utilized almost 3months in our environmental factor incubation experiments, and then we were investigated as for chemical changes of mercury in each soils. As a result of experiments, the variations of total mercury concentrations of each soil were not recognized in comparison with starting point of the incubation experiment. However, methylmercury content of Kuroboku soil(100ppm) was clearly increased chronologically. In case of 10ppm, methylmercury concentration of Redyellow soil was higher than other soils. Also, dissolved mercury concentrations of Redyellow soils (100ppm, 10ppm) were higher than other soils that were contaminated by mercury artificially.