Cations Detemination of Na+,NH4+,K+,Mg2+,Ca2+ in Fruits by Ion Chromatography

Abstract

Abstract: The amount of Na+, NH4+, K+, Mg2+, Ca2+ in five kinds of fruit (apple, pear, orange, pineapple, strawberry) were respectively separated and detected by ion chromatography. The chromatographic column is an cation-exchange column (IonPac CS12A 4250mm i.d). Sulfuric acid is used as eluent and detector is ECD-40 electrical conductivity detector. The external standard method is used for quantification analysis. The analysis results indicated that the five kinds of common cations linear relationship was good, with detection limits 0.01～0.1mgL. The recovery rates were between 93.2% and 102.7%. The relative standard deviations were among 0.72% and 3.92%. This method was of advantages of being simple, fast, accurate and effective to determine the contents of Na+, NH4+, K+, Mg2+, Ca2+ in other foods .

Key words: fruits, cation, ion-chromatography

LIU Yu-Fen, XIA Hai-Tao, LIAN Gui-Xiang. Cations Detemination of Na+,NH4+,K+,Mg2+,Ca2+ in Fruits by Ion Chromatography[J]. FOOD SCIENCE, 2005, 26(12): 182-184.

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Cations Detemination of Na+,NH4+,K+,Mg2+,Ca2+ in Fruits by Ion Chromatography

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