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Simultaneous separation of organic acid and organic salts by electrostatic ion chromatography

Shen, G.J.; Yang, R.F.; Yu, A.M.

Se Pu 19(5): 436-438

2001

ISSN/ISBN: 1000-8713
PMID: 12545440
Document Number: 527712
The electrostatic ion chromatographic column was prepared by coating conjugated acid salt micelles on the surface of octadecyl silica stationary phase. Pure water was used as mobile phase, and the conductance detector was connected on-line to electrostatic ion chromatograph. The conditions under which organic acid and organic salts were detected were studied. The mechanism for the above separation is discussed. Sodium benzoate and citric acid in Lichee drink were separated and determined. This method is rapid, simple with little interference and good reproducibility without any pollution since the mobile phase is water. This is an environmental friendly analytical method.

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