ABS树脂中痕迹量铜和铅的连续测定

The Continuous Determination of Trace Copper and Lead in ABS Resin

本文介绍一种采用2.5次微分阳极溶出伏安法同时连续测定ABS树脂中痕迹量铜和铅的方法。试验表明:在含有0.04M HCl的支持电介质中,铜和铅有很好的溶出峰,其蜂电位分别为—0.20V和—0.42V,检测下限为1×10^(-9)g/ml,回收率为95～105%。

A method for the continuous determination of trace copper and lead in ABS resin by 2.5s differential circuit of anodic stripping volammetry was introduced in this paper. Good stripping curves of copper and lead in 0.04 M HC1 medium were obtained, the peak position being -0.20V and -0.42V respectively, the detection limit was 1×10^(-9)g/ml, recovery ratio was 95～105%.