原子吸收石墨炉技术测定水中痕量阴离子洗涤剂

The Determination of Anionic Detergents in Water By Graphite Furnace Atomic Absorption Spectrometry

本文研究了用乙二胺铜(Ⅱ)—氯仿作为络合—萃取体系,石墨炉原子吸收技术间接测定水中痕量阴离子洗涤剂的一种方法。其检出限为2.0ug/1,加标回收率为89.6%～104.5%。具有选择性好、灵敏度高、快速简便等特点。同时还研究了水样的酸度和共存离子对测定的影响。对于用原子吸收进行有机分析具有一定的实际意义。

This paper describs the determination of anionic detergents in water with bis (ethy lenediamine)copper (Ⅱ)ion.The detection limit was 2.0μg.1^(-1). the standard addition recovery was 89.6%～104.5%.The method has high selectivity, sensi tivity and accuracy. The pH of water sample and the interference of co-existing ions were also studied. It has great sense of the determination of organic compoands by using atomic absorption spectrometry.