广西珊瑚钨锡矿周边土壤和植物汞污染研究

Study on Pollution of Surrounding Soils and Plants in Shanhu Tungsten Tin Deposit in Guangxi Province

摘要:

对广西珊瑚钨锡矿周边尾砂厂、废石厂和居民区土壤、植被进行采样分析，采集珊瑚矿周边尾砂厂、废石厂和居民区采集土壤样271620个，尾砂厂采植物样27个。采用原子荧光测汞仪进行分析测定法，研究土壤和茅草的不同部分中的汞含量。分析表明，距离矿区近的土壤汞含量高于距离矿区远的；土壤汞含量居民区大于尾砂场大于废石场。其中有65.0%的居民区、7.4%的尾砂场和6.3%废石场的样汞含量超过了我国《土壤环境质量标准(GB 156182008)》第二级标准的最低限值(汞≤0.2μg/g)。

Abstract:

Soils and plants in tailings factories, waste rock site and residential areas in Shanhu tungsten tin deposit in Guangxi province have been sampled and analyzed. Collecting 271620 soil samples from tailings factories, waste rock sites and residents area in surrounding areas of Shanhu deposit, 27 plants samples from tailings factory, by using atomic fluorescence analysis method, mercury contents in different parts of the soil and grass have been determined. It is showed that the mercury contents of soil near the mining are higher than the contents in far mining area. Mercury content in soil in residents is higher than in tailings field, while the mercury content in tailings field is higher than in waste rock field. Mercury contents in 65.0% of residents area, 7.4% tailings field and 6.3% in spoil ground can exceed the second grade standard of minimum value (mercury content is less than or equal to 0.2μg/g) of "soil environmental quality standard (GB 156182008).