Spectrophotometric method for the determination of an anionic surfactant without liquid-liquid extraction

被引：43

作者：

Kamaya, M ^{[1
]}

Tomizawa, Y ^{[1
]}

Nagashima, K ^{[1
]}

机构：

[1] Kogakuin Univ, Fac Engn, Dept Appl Chem, Hachioji, Tokyo 192, Japan

来源：

ANALYTICA CHIMICA ACTA | 1998年 / 362卷 / 2-3期

关键词：

spectrophotometry; anionic surfactant; sodium dodecyl sulfate; rhodamine; 6G; ion associate;

D O I：

10.1016/S0003-2670(98)00059-2

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A simple method for spectrophotometric determination of an anionic surfactant (0-15 mu g) was studied. The ion associate formed between sodium dodecyl sulfate (SDS) and Rhodamine 6G was adsorbed onto the wall of a PTFE vessel by vigorous shaking. After the resultant solution was discarded, the ion associate was dissolved in methyl cellosolve and its absorbance measured at 534 nm, The apparent molar absorptivity for SDS was 8.5 x 10(4) l mol(-1) cm(-1). The coefficient of variation for the determination of 7.2 mu g of SDS in 10 ml of sample was 4.5% (n=6). Greater sensitivity could be achieved by using a 50 ml sample. (C) 1998 Elsevier Science B.V.

引用

页码：157 / 161

页数：5