食品科学 ›› 2006, Vol. 27 ›› Issue (3): 185-188.

• 分析检测 • 上一篇    下一篇

低压离子色谱分离—次黄嘌呤增敏化学发光联用检测亚硫酸盐

 沈祥, 周光明, 游水英, 黄成, 王莉, 高智席   

  1. 西南师范大学化学化工学院
  • 出版日期:2006-03-15 发布日期:2011-09-06

Sulfite Determination by Low Pressure Ion Chromatography with Chemiluminescence Sensitized by Hypoxzanthine

 SHEN  Xiang, ZHOU  Guang-Ming, YOU  Shui-Ying, HUANG  Cheng, WANG  Li, GAO  Zhi-Xi   

  1. School of Chemistry and Chemical Engineering, Southwest China NormalUniveristy, Chongqing 400715, China
  • Online:2006-03-15 Published:2011-09-06

摘要: 本文发现次黄嘌呤对高锰酸钾-鲁米诺-SO3体系化学发光有增敏作用。结合低压离子色谱(LPIC)快速分离测定SO3,并用于实际样品中SO3含量测定。在优化条件下,SO3浓度与化学发光强度在5×10-8~4.8×10-6mol/L范围内成正比(r=0.9977),检出限3.2×10-8mol/L,选定SO3浓度为5×10-7mol/L,进行5次平行测定,RSD为3.25%。

关键词: 低压离子色谱, 化学发光, 亚硫酸盐

Abstract: Sulfite concentration is detected by low pressure ion chromatography (LPIC) with chemiluminescence due to thefact that hypoxanthine can sensitize the depression effect of sulfite on luminol- KMnO4 chemiluminescence reaction. The linerrange of sulfite concentration under optimal conditions is 5×10-8~4.8×10-6mol/L (r=0.9977)with a detection limit of 3.2×10-8mol/L, and RSD as 3.25% by assaying 5×10-7mol/L for five times. This simple, rapid and sensitive method is successfullyapplied to sulfite determination in food samples.

Key words: sulfite, low pressure ion chromatography, chemiluminescence