水相中直接分光光度法测定非离子表面活性剂的研究

STUDY OF DIRECT SPECTROPHOTOMETRIC DETERMINATION OF NON-IONIC SARFACTANTS IN WATER

在0.5N的硝酸介质中,乳化剂OP,吐温-80等非离子表面活性剂能促使弱电解质Hg(SCN)_2电离,并能改变Fe(Ⅲ)离子在水溶液的存在状态,使溶液中的[Fe(SCN)_6]^(3-)的吸光度与非离子表面活性剂的加入量成正比,从而建立了一个直接在水相中测定乳化剂OP,吐温-80等非离子表面活性剂浓度的方法。

In 0.5N HNO3medium,op and Tween-80and other non-ionic surfactants can make electrolytic dissociation of Hg(SCN)2,and can change state of iron(Ⅲ ) in water and increse conccntiation of [Fe(SCN)6]3-quantitative of op proportionated to absorbancc of [Fc(SCN)6]3-in solution.Thereby a method is built to determinate directly op twccn and othcrnon-ionic surfactants in water.