铝(Ⅲ)-5′-硝基水杨基荧光酮-溴化十六烷基三甲铵体系的荧光反应及应用研究  

Study of the Fluorescence Reaction of Aluminum (Ⅲ) with 5′-Nitrosalicylfluorone and Cetyltrimethylammonium Bromide and Its Analytical Application

作　　者：敖登高娃[1] 赛音[1] 

机构地区：[1]内蒙古大学化学化工学院,内蒙古呼和浩特010021

出　　处：《内蒙古大学学报（自然科学版）》2001年第6期634-637,共4页Journal of Inner Mongolia University：Natural Science Edition

基　　金：内蒙古自然科学基金 (990 3 0 1 -1 )

摘　　要：基于铝 ( )对 5′-硝基水杨基荧光酮的荧光具有猝灭的特性 ,拟定了一种测定铝的新方法 .该方法的激发波长为 2 4 6nm,发射波长为 5 5 2 nm,线性范围为 1 .6～ 2 8ng/ ml,检出限为1 .6ng/ ml.本方法灵敏度高、选择性好 ,用于多种茶叶中微量铝的测定 。A method has been developed for microdetermination of Al based on the fluorometric quenching effect of 5′ NSF CTMAB due to formation of an unfluorometric complex Al 5′ NSF CTMAB.The excitation wavelength of 5′ NSF CTMAB is 246 nm,and is emission wavelength is 552 nm.The linear relationship is obeyed in the range of 1.6~2.8 mg/ml for Al.The new method is highly sensitive for Al,and the detection limit of Al is 1.6 ng/ml.The new method also has high specificity.This method has been applied to the determination of aluminum in teas with satisfactory results.

关 键 词：铝 5′-硝基水杨基荧光酮 荧光光度法 茶叶 溴化十六烷基三甲铵 含量测定 荧光猝灭 

分 类 号：TS272.7[农业科学—茶叶生产加工] O657.32[轻工技术与工程—农产品加工及贮藏工程]