荧光分光光度法测定钙制剂中微量铝(Ⅲ)  

Determination of Trace Aluminum(Ⅲ) in Calcium Preparations by Fluorescence Spectrophotometry

作　　者：高策 阎峰 高小超 高秀坤 王文豪 林燕 关瑾 GAO Ce;YAN Feng;GAO Xiao-chao;GAO Xiu-kun;WANG Wen-hao;LIN Yan;GUAN Jin(Shenyang University of Chemical Technology,Shenyang 110142,China)

机构地区：[1]沈阳化工大学应用化学学院,辽宁沈阳110142

出　　处：《沈阳化工大学学报》2018年第4期301-304,共4页Journal of Shenyang University of Chemical Technology

基　　金：辽宁省自然科学基金资助项目(2015020701)

摘　　要：以8-羟基喹啉为络合剂,采用荧光分光光度法测定钙制剂中微量铝(Ⅲ),考察铝(Ⅲ)与8-羟基喹啉的显色条件.在pH=6. 0的醋酸-醋酸铵缓冲溶液中,铝(Ⅲ)与8-羟基喹啉形成稳定的配合物.使用三氯甲烷萃取,配合物的激发波长和发射波长分别为392 nm和512 nm.铝(Ⅲ)在2～200μg/L范围内,荧光强度与铝(Ⅲ)含量具有良好的线性关系,相关系数R^2=0. 998 3;方法的最低检出限为0. 2μg/L.该方法准确,简便,灵敏度高,可用于钙试剂中铝(Ⅲ)的测定.In this paper,8-hydroxyquinoline as complexing agent and trichloromethane as extracting solvent were used to determine trace aluminium(Ⅲ)in calcium reagent by fluorescence spectrophotometry.The chromogenic conditions of aluminum(Ⅲ)and8-hydroxyquinoline were investigated.In the acetic acid-ammonium acetate buffer solution of pH=6.0,stable complexes was formed by aluminum(Ⅲ)and8-hydroxyquinolinol.Chloroform was used as extraction agent.The excitation and emission wavelengths of complexes were392nm and512nm,respectively.The fluorescence intensity of aluminum(Ⅲ)has a good linear relationship with the content of aluminum(Ⅲ)in the range of2~200g/L.The correlation coefficient R^2=0.9983.The method is accurate,simple and sensitive,and it can be used for the determination of aluminum(Ⅲ)in calcium preparations.

关 键 词：荧光分光光度法 钙制剂 铝 8-羟基喹啉 

分 类 号：O655.9[理学—分析化学]