苏丹红Ⅰ的单扫描极谱法测定  

Determination of SudanⅠby single-scan polarography

作　　者：蒋雯菁[1] 万渝平 黄荔 但德忠[1] 

机构地区：[1]四川大学环境科学与工程系,四川成都610065 [2]成都市产品质量监督检验所,四川成都610041

出　　处：《化学研究与应用》2008年第10期1381-1384,共4页Chemical Research and Application

摘　　要：A novel method for determination of SudanⅠ in food by single scan polarography has been developed in this paper.It was found that a well-shape second derivation polarographic wave was observed at peak potential Ep-0.79V(vs.SCE)in the mediums of sodium tetraborate and ethanol.The peak current for the wave was proportional to concentration of Sudan I.The linear range was 0.1μg/mL^1.6μg/mL.The coefficient of correlation was 0.9983.The detection limit of the method was 0.025μg/mL.Its relative standard deviation(RSD) was ≤1.1%(n=6).Average recoveries of blank were over the range of 88.0%～101.0% and average recoveries of pepper samples were over the range of 91.0%～117.4%.The proposed method is rapid,simple,accurate and highly sensitive,which provided the new gist to improving and perfecting the method for determination of SudanⅠ,and possessed a significant practical value.A novel method for determination of Sudan Ⅰ in food by single scan polarography has been developed in this paper. It was found that a well-shape second derivation polarographic wave was observed at peak potential Ep-0. 79V （vs. SCE）in the mediums of sodium tetraborate and ethanol. The peak current for the wave was proportional to concentration of Sudan Ⅰ. The linear range was 0. 1μg/mL ～ 1.6μg/mL The coefficient of correlation was 0. 9983. The detection limit of the method was 0. 025μg/mL Its relative standard deviation （RSD） was ≤ 1.1% （ n = 6 ）. Average recoveries of blank were over the range of 88.0% ～ 101.0% and average recoveries of pepper samples were over the range of 91.0% - 117.4%. The proposed method is rapid, simple, accurate and highly sensitive, which provided the new gist to improving and perfecting the method for determination of Sudan Ⅰ , and possessed a significant practical value.

关 键 词：苏丹红Ⅰ 单扫描极谱法 添加剂 食品安全 

分 类 号：O657.1[理学—分析化学]