Simultaneous Determination of Organic Acids,Inorganic Anions,and Alditols in Wine with Valve-Switching Ion Chromatography |
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| Authors: | Fangfang Li Yan Bao Yuexue Yu He Cui Yun Fa Huizhou Liu |
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| Affiliation: | 1.Public Laboratory, Qingdao Institute of Bioenergy and Bioprocess Technology,Chinese Academy of Sciences,Qingdao,China;2.School of Materials Science and Engineering,Qingdao University of Science and Technology,Qingdao,China;3.Technical Center of Shandong Entry-Exit Inspection and Quarantine Bureau,Qingdao,China;4.University of Chinese Academy of Science,Beijing,China |
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| Abstract: | A valve-switching ion chromatography method coupled with conductivity and pulsed amperometric detection has been set up for the simultaneous determination of organic acids, inorganic anions and alditols in wine. The system, based on valve-switching technique, consisted of two pumps, two analytical columns and a trap column connected in series via one six-port valve. In addition, the optimal valve-switching time and chromatographic conditions were explored to obtain a good linearity, precision, accuracy, and sensitivity with a mean correlation coefficient of > 0.99, repeatability of 0.62–6.18% for eight replicates, and the average spiked recovery of 96.66%. The new method was successfully applied in the analysis of six kinds of wine from different regions. |
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