Fig. 9From: A novel method of reversed migration capillary electrophoresis for determination of linear alkylbenzene sulfonatesComparison of the electropherograms of LAS mixtures by injection time of water plug a 0s, b 5s, c 10s, d 20s, e 40s, and f 80s. LAS (1ppm) in 50% methanol aqueous solution; BGE: 20mM phosphate (pH 2.4)-50% acetonitrile; for other conditions, see Fig. 4Back to article page