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BIBTEX RIS

Analysis of cationic surfactants by capillary electrophoresis

1997; Elsevier BV; Volume: 757; Issue: 1-2 Linguagem: Inglês

10.1016/s0021-9673(96)00663-2

ISSN

1873-3778

Autores

E. Piera, P. Erra, M. R. Infante,

Tópico(s)

Analytical Chemistry and Sensors

Resumo

Capillary zone electrophoresis was applied to the analysis of N-benzyl-N-alkyl-N,N-dimethylammonium chloride compounds with different alkyl chain lengths (C12C18) by direct UV detection. A tetrahydrifuran-containing buffer was used to prevent the occurrence of micellization and adsorption of the surfactants, thereby yielding adequate separations according to their free-form electrophoretic mobilities. Resolution, theoretical plate number, reproducibility and precision were ascertained. Finally, the electrophoretic method was applied to the quantitative determination of an industrial mixture of Cn-benzyl surfactants.

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