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Determination of benzoic acid in milk by solid-phase extraction and ion chromatography with conductivity detection 被引量:10
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作者 Zong-Hua Wang Jian-Fei Xia +4 位作者 fu-yong zhao Qiang Han Xin-Mei Guo Hui Wang Ming-Yu Ding 《Chinese Chemical Letters》 SCIE CAS CSCD 2013年第3期243-245,共3页
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 chromat... 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 Na2C03 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 ug/L), recovery values (ranging from 88.0% to 93.0%) and relative standard deviation (RSD) (below 2.2%, n = 7). 展开更多
关键词 Ion chromatographyBenzoic acidSolid-phase extractionMilk
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