食品科学 ›› 2010, Vol. 31 ›› Issue (12): 226-228.doi: 10.7506/spkx1002-6630-201012053

• 分析检测 • 上一篇    下一篇

离子色谱-电感耦合等离子体质谱法联用测定饮料中的溴形态

林立1,陈玉红2,王海波3   

  1. 1. 国家食品安全监督检验中心
    2. 安捷伦科技(中国)有限公司 3.戴安(中国)有限公司应用研究中心
  • 收稿日期:2009-10-14 修回日期:2010-01-29 出版日期:2010-06-15 发布日期:2010-12-29
  • 通讯作者: 林立 E-mail:linli77422@yahoo.com.cn

Determination of Existing Forms of Bromine in Beverage by IC-ICP-MS

LIN Li1, CHEN Yu-hong2,WANG Hai-bo3   

  1. 1. China National Food and Safety Supervision and Inspection Center, Beijing 100094, China ;
    2. Agilent Technologies (China) Co. Ltd., Beijing 100102, China;
    3. Application Research Center, Dionex China Co. Ltd., Beijing 100083, China
  • Received:2009-10-14 Revised:2010-01-29 Online:2010-06-15 Published:2010-12-29
  • Contact: LIN Li E-mail:linli77422@yahoo.com.cn

摘要:

建立离子色谱(IC)进行分离、电感耦合等离子体质谱仪(ICP-MS)作为检测器测定饮料中溴酸根与溴离子的方法。溴酸根与溴离子的检出限分别为0.1μg/L 和0.2μg/L。根据加标回收的方法评价该方法的准确性,溴酸根的加标回收率为88.1%~106.4%,相对标准偏差为1.52%~3.83%(n=6)。根据所建立的方法,分析市售部分饮料中溴酸根的含量,其中溴酸根均未检出。

关键词: IC-ICP-MS, 饮料, 溴酸根, 溴离子

Abstract:

In this study, we presented a method based on ion chromatographic separation and ICP-MS detection for the determination of two existing forms of bromine in beverage, i.e., BrO3- and Br-. The limits of detection of the presented method were 0.1μg/L for BrO3- and 0.2μg/L for Br-. Spike recovery tests were carried out to evaluate the accuracy and precision of this method, and average recoveries for BrO3- in 3 different matrices spiked at 3 levels ranged from 88.1% to 106.4%, with a relative standard deviation from 1.52% to 3.83% (n = 6). This method was used to analyze some commercial beverages, and no BrO3 - was detected in any of them.

Key words: IC-ICP-MS, beverage, bromate ion, bromide ion

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