分光光度显色剂PAN-S测定铝合金中锌的研究

DETERMINATION OF ZINC IN ALUMINIUM ALLOY WITH A SPEETROPHOTOMETRIC REAGNT PAN—S

以PAN-S作为光度显色剂测定铝合金中的锌是一种新的分析方法,具有操作简单,灵敏度高等优点。本文研究了用PAN-S测定铝合金中锌的反应条件,拟定了测定方法。在pH8.5时与锌形成1:2的可溶性络合物,其最大吸收峰λ_(max)=536nm,ε=4.06×10~4L·mol^(-1)·cm^(-1)。

PAN-S as a new color reagent for spectrophotometric determination of zinc in aluminium alloy is a new analytical method. In this paper, the reaction conditions for determination of zinc in aluminium alloy with PAN-S are studied and the determination method by spectrophotometry is worked out. PAN-S reacts with zinc at pH8.5 and the molar absorptivity of complex is 4.06x10^4 L·cm^(-1)·mol^(-1) at 536nm。