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L-Malic Acid Separation by Ion-exchange Method

Xie Ai

Abstract

The static state exchange and absorption properties of L malic acid and Cl - on weakly basic ion exchange resins were discussed. A series of dynamical exchange curves and some influence factors,such as temperature and the original concentration were studied too.D301 resin was selected to purify L malic acid.When pH was 4 3 and flow rate was 2 mL/min, L malic acid of high purity could be obtained.

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Key concepts: Malic acid, Ion exchange, Chemistry, Ion-exchange resin, Chromatography, Ion, Inorganic chemistry, Organic chemistry