Determination of cations in fruit juices and purées by ion chromatography

An isocratic ion chromatographic (IC) method for the separation and determination of the main cations in fruit purées was evaluated. Ion chromatographic separation of Group I and II cations have already been tested with many other matrices; it allowed the simultaneous separation of Na, Ca, Mg, K and...

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Bibliographic Details
Published inJournal of Chromatography A Vol. 739; no. 1; pp. 175 - 181
Main Authors Trifirò, A., Saccani, G., Zanotti, A., Gherardi, S., Cavalli, S., Reschiotto, C.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 19.07.1996
Subjects
Food analysis
Fruit juice
Inorganic cations
Inorganic cations
Food analysis
Fruit juice
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Summary:An isocratic ion chromatographic (IC) method for the separation and determination of the main cations in fruit purées was evaluated. Ion chromatographic separation of Group I and II cations have already been tested with many other matrices; it allowed the simultaneous separation of Na, Ca, Mg, K and ammonium ions by using a new cation-exchange column (Ionpac CS12A), an electrically regenerated suppressor and a conductivity detector. The aim of this work was to evaluate the proposed IC method for fruit products which are characterized by considerable quantitative imbalances among the cations. During the 1994 season several samples of Italian fruit juices and purées were collected and Na, Ca, Mg and K were determined by both atomic absorption spectrometry and IC. The data obtained by IC were suitable for the use in quality and process control in the fruit juices industry.
ISSN:0021-9673
DOI:10.1016/0021-9673(96)00053-2