摘要：

针对工业废水中干扰离子多、需要用有机溶剂萃取等问题,将反相流动注射分析技术应用于铜催化的Fe³⁺氧化S₂O₃^2-专属反应中,克服了传统分析方法操作繁琐、分析速度慢以及手工操作的不确定性导致精密度不理想的缺陷,建立了具有优良选择性的测定废水中铜的快速分析方法。在优化实验条件下,其检出限为0.008mg/L,线性范围为0～0.5mg/L。应用于工业废水样中铜的测定,其相对标准偏差<1.5%,加标回收率为97.1%～98.3%。

关键词: 反相流动注射, 催化光度法, 铜

Abstract:

To solve the problems of interferential ions in industrial wastewater and the necessity of organic solvent extraction,the reversed phase injection analytical technique is applied to the specific reaction of coppercatalyzed Fe³⁺ oxidation S₂O₃^2-,overcoming the deficiencies,such as complicated operation of the traditional analysis,slow analytical speed,and the inaccuracy caused by manual operation. Under optimized conditions,the detection limit is 0.008 mg/L,linear range is 0 to 0.5 mg/L. The relative standard deviation is1.5%,and the indexed recovery rate is 97.1%-98.3%.

Key words: reversed phase injection, catalytic spectrophotometry, copper

中图分类号: 

• X832