色谱2013，Vol.31Issue(1)：88-91,4.DOI:10.3724/SP.J.1123.2012.08001
阀切换-离子色谱法测定分析纯硫酸钠中痕量氯离子
Determination of trace chloride in sodium sulfate of analytical reagent-grade by valve-switching ion chromatography
摘要
Abstract
A valve-switching ion chromatography system was developed for the determination of trace chloride in sodium sulfate using a single pump, a suppressor, two valves and three columns. Using this technique, the trace chloride was eluted from the concentrator column (Ion-Pac TAC-ULP1, 23 mm ×5 mm) to the analytical column (IonPac AS18, 250 mm ×4 mm) , and the sulfate flowed to the waste. Under the optimized separation conditions, the method showed good linearity (r2 > 0. 999) in the range of 0. 03 - 1 mg/L and the average recoveries of chloride were 98. 0% -103. 0% with the relative standard deviation less than 2%. The limit of detection was 0. 01 mg/L (S/N = 3). The results demonstrated that this system has the advantages of high sensitivity, facile automation and simple sample pretreatment, which might be a promising approach for the determination of trace chloride in high-purity reagents.关键词
离子色谱/阀切换/氯离子/分析纯硫酸钠Key words
ion chromatography (IC) / valve-switching/ chloride/ sodium sulfate of analytical reagent-grade分类
化学化工引用本文复制引用
张婷婷,王娜妮,叶明立,胡忠阳,潘广文..阀切换-离子色谱法测定分析纯硫酸钠中痕量氯离子[J].色谱,2013,31(1):88-91,4.基金项目
浙江省省级公益性技术应用研究计划项目(2012C37038). （2012C37038）
