薄層クロマトグラフィーによるアニオン界面活性剤の分離定性ならびに定量 (第1報) : ドデシルベンゼンスルホン酸ナトリウム, 硫酸ドデシル=ナトリウム及び1-ドデカンスルホン酸ナトリウム混合物について

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The separating and estimating conditions for anionic surfactants by TLC were studied. 1) Sodium salts of dodecylbenzenesulfonate (LAS), dodecyl sulfate (LS-Na) and 1-dodecanesulfonate (SAS) were prepared and used as standard materials and samples. 2) The optimum conditions for TLC were as follows; Stationary phase : Silica Gel G impregnated with 10% ammonium sulfate. Activating temperature and time : 110°C, 80min. Developing solvent : 2-methyl-4-pentanone·propyl alcohol·0.1N acetic acid·acetonitrile (volume ratio, 20 : 6 : 1.6 : 1). Charring temperature and time : 250°C, 15min. Detecting reagent : No use. 3) Mixtures of LAS, LS-Na and SAS were separated and estimated each other by TLC under the above optimum conditions. The experimental error and coefficient of variation were 0.23.8% and 0.374.75 respectively.
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