离子色谱法测定柠檬黄中Cl^-和SO_4^(2-)离子的含量  

Determination of Cl^- and SO_4^(2-) in Lemon Yellow by Ion Chromatography

作　　者：蒲爱军[1] 季浩[1] 沈日炯[1] 

机构地区：[1]沈阳化工研究院有限公司,沈阳110021

出　　处：《染料与染色》2014年第6期48-50,共3页Dyestuffs and Coloration

摘　　要：建立了测定柠檬黄中Cl-和SO2-4含量的检测方法。用离子色谱对样品中的Cl-和SO2-4进行分离,用电导检测器检测,用峰面积外标法进行定量。柠檬黄中Cl-的检出限为6 mg/kg,SO2-4的检出限为15 mg/kg,方法的精密度高,线性关系良好,相对标准偏差小于2%。A method for determining Cl-and SO2-4 in Lemon Yellow was established. Cl-and SO2-4were separated by ion chromatography,and detected by conductivity detector; their contents were quantified by external standard peak area. The limit of detection for Cl-was 6mg / kg and for SO2-4was 15 mg / kg. The results showed that the method has high precision with a good linear relationship,and the relative standard deviations less than 2%

关 键 词：柠檬黄 离子色谱 Cl- SO42- 峰面积外标法 

分 类 号：O657.7[理学—分析化学] TS264.4[理学—化学]