食品科学 ›› 2005, Vol. 26 ›› Issue (6): 210-212.

• 分析检测 • 上一篇    下一篇

单扫描极谱法连续测定食品中非食用色素酸性金黄和酸性大红

 陈文, 王正猛, 吴晓蓉, 王宏   

  1. 成都理工大学材料与生物工程学院
  • 出版日期:2005-06-15 发布日期:2011-09-19

Simultaneous Determination of Micro-Amounts of Acid Orange and Acid Red in Food by Single Sweep Polarography

 CHEN  Wen, WANG  Zheng-Meng, WU  Xiao-Rong, WANG  Hong   

  1. College of Materials and Bioengineering, Chengdu University of Technology
  • Online:2005-06-15 Published:2011-09-19

摘要: 提出了在0.01mol/L硼砂底液中,单扫描极谱法于原点电位-0.50V(vs.SCE)起扫,在峰电位分别为-0.74V(vs.SCE),0.89V(vs.SCE)测定酸性金黄和酸性大红的方法。线性范围为0.20~10.0μg/ml酸性金黄,0.20~-6.0μg/ml酸性大红;最低检出浓度均为0.10μg/ml,本法简捷快速,用于食品分析符合要求。

关键词: 单扫描极谱法, 食品, 酸性金黄, 酸性大红

Abstract: A method for the determination of acid orangeⅡand acid redGR simultaneously in a supporting solution of 0.01mol/ L by single sweep polarography has been established. The peak potentials were -0.74V, -0.89V(vs.SCE) respectively .The peak hights were linearly proportional to the concentration of acid orangeⅡin the range of in the range of 0.20~10.0μg/ml and of acid redGR 0.20~6.0μg/ml. The detection limit was 0.10 μg/ml for both OrangeⅡand redGR . This method was simple and sensitive with good selectivity. The results were satisfactory when used to analyse food.

Key words: single sweep polarography, food, acid orange, acid Red