Quantitative Analysis of Cationic Surfactants with Methyl Orange
Quantitative Analysis of Cationic Surfactants with Methyl Orange
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甲基橙对阳离子表面活性剂的定量分析
DOI：
10.5650/jos1956.25.21
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发表时间：
1976
期刊：
影响因子：
--
通讯作者：
S. Miyagishi
中科院分区：
文献类型：
--
作者：
M. Nishida;M. Kanamori;S. Ooi;S. Miyagishi
在非离子或两性表面活性剂存在下，用甲基橙分光光度法测定阳离子表面活性剂。阳离子表面活性剂与甲基橙反应，降低甲基橙溶液的吸光度。在462 nm处观察到最大降低，这是碱性区域的吸收带，并且在pH 6.08.0范围内吸光度恒定。测定阳离子表面活性剂的校准曲线是通过在pH 6.90、3.0×10-5M甲基橙存在下462 nm处吸光度的降低获得的。在过量的聚氧乙烯月桂基醚或N-月桂基甜菜碱盐酸盐存在下可以测定氯化十六烷基吡啶鎓和肉豆蔻基苄基二甲基氯化铵。
The cationic surfactants were determined spectrophotometrically with methyl orange in the presence of nonionic or amphoteric surfactant. The cationic surfactants react with methyl orange to decrease the absorbance of methyl orange solution. The maximum decrease is observed at 462 nm which is the absorption band in alkali region, and the absorbance is constant in the pH range of 6.08.0. The calibration curve for the determination of the cationic surfactants was obtained from the decrease of absorbance at 462 nm in the presence of 3.0×10-5M methyl orange at pH 6.90. Cetyl pyridinium chloride and myristyl benzyl dimethyl ammonium chloride could be determined in the presence of excess amount of polyoxyethylene lauryl ether or N-lauryl betain hydrochloride.