An effective pretreatment method for wine color removal by a PS-DVB SPE cartridge and online alcohol elimination by valve switching was presented. The optimum parameters for color removal were investigated: 40-μm and 100 Å poly (styrene)-divinylbenzene (PS-DVB) (0.4 g) was selected as the color removal material and 5 mL of ethanol (10%) as the elution solvent for sample pretreatment under given condition. Moreover, an accurate and automated two-dimensional ion chromatography method for the simultaneous detection of amino acids and sugars was achieved with two valves after injection without alcohol interference. The method had a mean correlation coefficient of >0.99 and a repeatability of 0.92%–4.30% for eight replicates. The mean recovery of six red wine samples were 97.6%, 96.6%, 96.1%, 95.9%, 97.3% and 96.4% respectively. And this method successfully analyzed the amino acid and sugar contents of six wine samples of different origins.

提出了一种有效的预处理方法，用于通过PS-DVB SPE滤芯去除酒色并通过阀切换在线消除酒精。研究了用于除色的最佳参数：选择40-μm和100Å聚（苯乙烯）-二乙烯基苯（PS-DVB）（0.4 g）作为除色材料，并使用5 mL乙醇（10％）作为洗脱溶剂在给定条件下进行样品预处理。此外，在注射后用两个阀门实现了准确自动的二维离子色谱法，可同时检测氨基酸和糖类，而无酒精干扰。该方法的平均相关系数> 0.99，八次重复的重复性为0.92％–4.30％。六个红酒样品的平均回收率分别为97.6％，96.6％，96.1％，95.9％，97.3％和96.4％。