Ion chromatographic determination of some organic acids, chloride and phosphate in coffee and tea

被引：61

作者：

Alcázar, A ^{[1
]}

Fernández-Cáceres, PL ^{[1
]}

Martín, MJ ^{[1
]}

Pablos, F ^{[1
]}

González, AG ^{[1
]}

机构：

[1] Univ Sevilla, Fac Chem, Dept Analyt Chem, E-41012 Seville, Spain

来源：

TALANTA | 2003年 / 61卷 / 02期

关键词：

tea; coffee; organic acids; chloride; phosphate; ion chromatography;

D O I：

10.1016/S0039-9140(03)00244-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

An ion chromatographic method for the simultaneous determination of organic acids and inorganic ions is described. Acetic. malic. ascorbic, citric, malic and succinic acids, chloride and phosphate were determined in coffee and tea samples. The separation is performed on an anion-exchange column operated at 40 degreesC within 25 min by an isocratic elution with 0.6 mM aqueous potassium hydrogenphthalate (pH 4.0) solution containing 4% (v/v) acetonitrile as eluent and determination by conductivity detection. The method does not need a special sample treatment and was successfully applied to the analysis of black, green and oolong tea samples. Also, green and roasted coffee samples from the varieties arabica and robusta were analyzed. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：95 / 101

页数：7

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