Determination of benzoic acid in milk by solid-phase extraction and ion chromatography with conductivity detection

被引：21

作者：

Wang, Zong-Hua ^{[1
]}

Xia, Jian-Fei ^{[1
]}

Zhao, Fu-Yong ^{[1
,2
]}

Han, Qiang ^{[1
]}

Guo, Xin-Mei ^{[1
]}

Wang, Hui ^{[3
]}

Ding, Ming-Yu ^{[3
]}

机构：

[1] Qingdao Univ, Lab Fiber Mat & Modern Text, Growing Base State Key Lab, Coll Chem & Environm Engn, Qingdao 266071, Peoples R China

[2] Metrohm China Ltd, Beijing 100005, Peoples R China

[3] Tsinghua Univ, Dept Chem, Beijing Key Lab Microanalyt Methods & Instrumenta, Beijing 100084, Peoples R China

来源：

CHINESE CHEMICAL LETTERS | 2013年 / 24卷 / 03期

关键词：

Ion chromatography; Benzoic acid; Solid-phase extraction; Milk; GAS-CHROMATOGRAPHY; SORBIC ACIDS; FOOD; MICROEXTRACTION;

D O I：

10.1016/j.cclet.2013.01.048

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A simple, fast, precise and eco-friendly method, based on ion chromatography (IC) with a suppressed conductivity detector, was proposed for the determination of benzoic acid (BA) in milk in this paper. The chromatographic separation was accomplished by using an anion exchange column eluted with 3.2 mmol/L aqueous Na2CO3 and 1.0 mmol/L aqueous NaHCO3 at a flow-rate of 0.7 mL/min. The method validation experiment provided excellent results with respect to linearity (correlation coefficient up to 0.9997), limit of detection (0.1 mu g/L), recovery values (ranging from 88.0% to 93.0%) and relative standard deviation (RSD) (below 2.2%, n = 7). (C) 2013 Zong-Hua Wang. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

引用

页码：243 / 245

页数：3

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