摘要
建立测定牙膏中亚硫酸盐的离子色谱法.采用Thermo Fisher IonPac AS11–HC 和AG11–HC 色谱柱,在11 mmol/L KOH 溶液中分离测定牙膏中的亚硫酸根离子,亚硫酸根离子的质量浓度与色谱峰面积线性关系良好,线性方程为y=0.114 7x–0.012 3,相关系数r2=0.999 7,检测限为0.025 mg/L,测定结果的相对标准偏差为为2.2%（n=7）,回收率在81.8%～90.3% 之间.
An ion chromatography method to determine sulfite in toothpastes was established. Separated by ThermoFisher IonPac AS11–HC and AG11–HC chromatographic column with 11 mmol/L KOH solution as mobile phase,sulfitewas determined by ion chromatography. The chromatography peak area showed a good linearity with sulfite concentration（r2=0.999 7）, the detectcion limited was 0.025 mg/L,the linear equation was y=0.114 7x–0.012 3,the relative standarddeviation was 2.2%（n=7）,and the recoveries were between 81.8% and 90.3%.
出处
《化学分析计量》
CAS
2014年第B12期38-39,共2页
Chemical Analysis And Meterage
关键词
亚硫酸盐
离子色谱
电导
牙膏
sulfite
ion chromatography
conductivity
toothpaste
作者简介
姜振邦;E-mail：Zhenbang.Jiang@Thermofisher.com
