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环境化学  2015 

DOI:10.7524/j.issn.0254-6108.2014.08.013

Keywords: ,,晴隆锑矿区,土壤污染,Tessier逐级提取法,生物有效性

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Abstract:

采用微波消解-氢化物发生-原子荧光光谱法测定了晴隆锑矿区土壤中总砷和总锑,利用Tessier连续提取法分析土壤中不同形态砷和锑.结果表明,各采样点土壤As、Sb含量分别为17.98—127.85mg·kg-1、171.93—601.59mg·kg-1,远高于贵州省背景值;土壤中砷和锑的存在形态均以残渣态为主,其次是有机结合态、铁锰氧化物结合态和碳酸盐结合态,可交换态很少;土壤中生物可利用态锑占总和0.33%—1.72%,其含量为0.60—3.91mg·kg-1,而土壤中生物可利用态砷占总和0.09%—0.57%,其含量为0.15—0.48mg·kg-1.

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