食品科学 ›› 2010, Vol. 31 ›› Issue (22): 439-441.doi: 10.7506/spkx1002-6630-201022098

• 分析检测 • 上一篇    下一篇

流动注射化学发光法测定面粉中过氧化苯甲酰

吴迎春,聂 峰   

  1. 陕西理工学院化学与环境科学学院
  • 收稿日期:2010-06-28 修回日期:2010-10-21 出版日期:2010-11-25 发布日期:2010-12-29
  • 通讯作者: 吴迎春 E-mail:wuyc@snut.edu.cn
  • 基金资助:

    陕西省自然科学基础研究基金项目(2010JM7016(1))

Determination of Benzoyl Peroxide in Flour by Flow Injection Chemiluminescence Method

WU Ying-chun,NIE Feng   

  1. School of Chemical and Enviromental Science, Shaanxi University of Technology, Hanzhong 723001, China
  • Received:2010-06-28 Revised:2010-10-21 Online:2010-11-25 Published:2010-12-29
  • Contact: WU Ying-chun E-mail:wuyc@snut.edu.cn

摘要:

目的:建立面粉中过氧化苯甲酰含量测定的化学发光新方法。方法:过氧化苯甲酰氧化KI 生成I2,该反应和luminol-H2O2 化学发光体系相耦合,进而对面粉中的过氧化苯甲酰进行测定。结果:方法的线性范围为3.0 × 10-8~4.0 × 10-6g/mL,检出限为4.0 × 10-9g/mL, RSD 为2.2%(质量浓度5.0 × 10-8g/mL,11 次平行测定)。结论:该方法具有简单、灵敏、线性范围宽的优点。

关键词: 流动注射, 化学发光法, 过氧化苯甲酰

Abstract:

Objective: To develop a new flow injection chemiluminescence method for determining benzoyl peroxide in flour. Methods: KI can be oxidized by benzoyl peroxide to produce I2. This reaction is coupled with a luminal-H2O2 chemiluminescence system to determine benzoyl peroxide in flour. Results: The determination range of this method is 3.0 × 10-8-4.0 × 10-6 g/mL, and the detection limit of this method is 4.0 × 10-9 g/mL with a relative standard deviation of 2.2%. Conclusion: This method is characteristics of simple, high selectivity, accuracy and sensitivity.

Key words: flow injection, chemiluminescence, benzoyl peroxide

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