摘要
研究了在微乳液介质中，锌与１－（２－吡啶偶氮）－２－萘酚（ＰＡＮ）的显色反应，选择５５５ｎｍ处为测定波长，ε为４．５×１０４Ｌｍｏｌ－１ｃｍ－１，锌量在０～１．５２ｍｇ／Ｌ范围内符合朗伯－比耳定律。
The color reaction has been studied for the determination of zinc with microemulsion and 1(2pyridylazo)2naphthol,and its apparent molar absorptivity is 4.5×104 L·mol-1·cm-1 at 555 nm. Beer's law is obeyed in the range of 0～152 mg/L for Zn2+. This method is convenient for the direct determination of the zinc content of solid zinc stearate without any preprocessing.
