ICP-AES连续氢化(还原)同时测定水、水生生物和沉积物样品中As、Sb、Bi和Hg

Determination of Arsenic, Antimony. Bismuth and Mercury in the Environmental Water with Hydride Generation ICP-AES.

本文利用KBH_4的氢化(还原)作用,将酸性样品溶液中砷、锑、铋氢化和将汞离子还原为汞蒸气一同引入ICP(电感耦合等离子体)光源进行发射光谱测定,探讨了水、鱼、螺蚌类肉中As、Sb、Bi和Hg,沉积物样品中As、Sb和Bi的测定方法。As、Sb、Bi检出限为0.01ppm,Hg为0.001ppm。10次测定的RSD％A86.5、Sb6.8、Bi10.9、Hg3.6(5次)。进行多次加际回收试验和标准参考样的测定,得到了好的结果。该方法利用一套标准溶液同时适用于不同类样品的测定,具有简单、快速的特点,灵敏度能满足水环境监测(Ⅲ级地面水汞尚不足)的需要。

A method of potassium borhydride reduction combined with ICP-AES was tested and used for the detection of arsenic, antimony, ismuth and mercury in the environmental water. The detection limit are 0.01 mg/ml for As, Sb, Bi and 0.001mg/ml for Hg respctively. The method proved to be simple and rapid.