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Determination of surfactant mixtures in shampoos and detergents by HPLC

1984; Wiley; Volume: 61; Issue: 6 Linguagem: Inglês

10.1007/bf02636239

1558-9331

Kiyoshi Nakamura, Yoshihiro Morikawa,

Microfluidic and Capillary Electrophoresis Applications

Abstract A technique for separating 4 nonionic, 7 anionic and 4 amphoteric surfactants with n‐dodecyl groups was studied by high performance liquid chromatography (HPLC) and applied to the determination of these surfactants in commercial shampoos and household detergents. Conditions used for the separation were: column packing and size, TSK‐LS 410 (5µ) and 6 mm i.d. × 500 mm (2 connected, 250 mm columns); mobile phase, water/methanol (25/75, v/v) containing 0.25 M sodium perchlorate adjusted to pH 2.5 with phosphoric acid; column temp., 50 C; detector, RI. Surfactants in shampoos and detergents were clearly distinguished from each other and determined without column chromatographic pretreatment, e.g., ion‐exchange chromatography.