摘要
基于叔丁基茴香醚(BHA)与2,6 二叔丁基对甲酚(BHT)与铬(Ⅵ)的还原反应,产生的铬(Ⅲ)催化Luminol(鲁米诺) 过氧化氢化学发光体系的研究,结合流动注射技术,建立了一种高灵敏度的快速测定BHA与BHT的新方法。方法的线性范围为2.0×10-9～4.0×10-5g·ml-1和2.8×10-9～1.0×10-5g·ml-1,检出限为6.0×10-10g·ml-1和8.0×10-10g·ml-1,相对标准偏差为1.2%和1.4%(1.0×10-7g·ml-1BHA和BHT,n=11)。方法应用于食品中痕量BHA和BHT的测定,结果满意。
Based on the reduction of hexavalent chromium by BHA or BHT to trivalent chromium which in turn catalyze the chemiluminescence reaction of luminol with hydrogen peroxide, a rapid, sensitive and new method, hyphenated with FI technique, for the chemiluminescence determination of BHA or BHT was established. Linearities for BHA and BHT were found in the ranges of 2.0×10^(-9)～4.0×10^(-5)g·ml^(-1) and 2.8×10^(-9)～1.0×10^(-5)g·ml^(-1) with their detection limits of 6.0×10^(-10)g·ml^(-1) and 8.0×10^(-10)g·ml^(-1) respectively. RSD′s (n=11) at the concentration level of 1.0×10^(-7)g·ml^(-1) for both BHA and BTA were found to be 1.2% and 1.4% respectively. This method has been used in the determination of BHA and BHT in food with satisfactory results.
出处
《理化检验（化学分册）》
CAS
CSCD
北大核心
2004年第1期37-39,42,共4页
Physical Testing and Chemical Analysis(Part B:Chemical Analysis)
