氢化物发生－ICP发射光谱法测定饮用水中痕量砷

Determination of Trace Arsenic in Drinking Water by Hydride Generation-ICP Emission Spectrometry

本文提出用简易氢化物发生系统与ＩＣＰ光谱仪联用，测定自来水和矿泉水中痕量砷的简易、快速的方法。用氢氧化铁共沉淀水中痕量砷，沉淀用离心机分离和富集。选择最优化的反应条件和工作条件。方法的检测限为０．００２μｇ／Ｌ，精密度为２％，回收率在９０％～１０４％之间。

A simple and fast method for the determination of the trace arsenic in tap and spring waters by ICP emission spectrometry with a simple hydride generation system is presented.The arsenic in water samples was first enriched by co-precipitation with iron hydroxide. The precipitate was then separated by centrifuge.Under optimal reaction and operation conditions, the detection limit is 0.002μg/mL,and the precision is 2%. The recovery rate is in the range of 90%～104%.