以二乙氨基乙基交联葡聚糖凝胶为基质的铝荧光传感层  

An Aluminum Fluorescence Sensing Layer Based on 2-(Diethylamino)Ethyl Sephadex as a Substrate

作　　者：卢建忠[1] 章竹君[2] 沈爱宝[3] 

机构地区：[1]南京大学化学系,南京210008 [2]陕西师范大学化学系,西安710062 [3]南通医学院化学教研室

出　　处：《分析化学》1996年第10期1129-1132,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金

摘　　要：本文基于A13-离子对电价键固定在二乙氨基乙基交联葡聚糖凝胶（DEAESephadex）上的水杨基荧光酮的可逆荧光淬灭作用，研制了测定Al3-离子浓度的荧光传感层。其线性范围为20～150μg／L，重视性良好，响应速度快。该传感层已成功应用于水样和葡萄糖注射液中A13-离子的测定，并初步研究了荧光淬灭机理。A new fluorescence sensing layer for the determination of Al3- based on reversible fluorescence quenching of salicylfluorone immobilized electrostatically on 2-(diethylamino )-ethyl sephadex has been developed. Al3+ in solution from 20μg/L to 150μg/L can be determined. Besides a high reproducibility of optical signals, a short rcsponse time is realized.This sensing layer has been applied to the determination of Al3- in water samples and glucose injection. The mechanism of fluorescence quenching has been studied.

关 键 词：荧光淬灭 铝离子 传感层 DEAE 凝胶 

分 类 号：O614.31[理学—无机化学] O657.1[理学—化学]