欢迎访问《日用化学工业（中英文）》，今天是
日用化学工业（中英文）

日用化学工业 ›› 2014, Vol. 44 ›› Issue (7): 410-412.doi: 10.13218/j.cnki.csdc.2014.07.092

• 分析与检测 • 上一篇    下一篇

离子色谱法测定牙膏中的亚硫酸盐含量

郭长虹, 夏泽敏, 谭建华, 李慧勇, 席绍峰, 王继才, 熊小婷, 赵田甜   

  1. 广州质量监督检测研究院,广东 广州 510110
  • 收稿日期:2014-04-28 发布日期:2019-04-08
  • 作者简介:郭长虹(1967-),女,四川人,高级工程师,电话:(020)83398626,E-mail:1286029308@qq.com。

Determination of sulfite content in toothpaste by ion chromatography

GUO Chang-hong, XIA Ze-min, TAN Jian-hua, LI Hui-yong, XI Shao-feng, WANG Ji-cai, XIONG Xiao-ting, ZHAO Tian-tian   

  1. Guangzhou Quality Supervision and Testing Institute,Guangzhou,Guangdong 510110,China
  • Received:2014-04-28 Published:2019-04-08

PDF (PC)

314

赞

摘要： 建立了离子色谱法检测牙膏中亚硫酸盐含量的方法。以甲醛溶液为SO2-3稳定剂,样品采用10 mmol·L-1 NaOH水溶液提取后,以Metrosep Supp 5-250为色谱柱,淋洗液为V(3.2 mmol·L-1 Na2CO3+1.0 mmol·L-1 NaHCO3):V(丙酮)=88:12的混合溶液,流速0.5 mL·min-1,进样体积 20 μL。结果表明,亚硫酸盐在0.10～10 mg·L-1内线性关系良好,相关系数为0.999 9,样品基质加标的回收率为84.7%～90.1%,相对标准偏差为1.06%～3.18%,样品中亚硫酸盐的检出限为5 mg·kg-1。

关键词: 牙膏, 离子色谱法, 亚硫酸盐

Abstract: A method was established for the determination of sulfite content in toothpaste by ion chromatography.With formaldehyde solution as stabilizing agent of SO2-3,samples were extracted with 10 mmol·L-1 sodium hydroxide solution and were separated on a Metrosep Supp 5-250 chromatographic column using solution of V(3.2 mmol·L-1 Na2CO3+1.0 mmol·L-1 NaHCO3):V(acetone)=88:12 as the eluent.The flow rate was 0.5 mL·min-1 and the injection volume was 20 μL.With this method,range with good linearity for sulfite was 0.10~10 mg·L-1 with the correlation coefficient of 0.999 9.The recoveries,relative standard deviations and detection limits were 84.7%-90.1%,1.06%-3.18% and 5 mg·kg-1 respectively.

Key words: toothpaste, ion chromatography, sulfite

中图分类号: 

  • TQ658.4+1