三聚氰胺荧光熄灭法测定Ag(Ⅰ)的研究  

Study on the fluorescence quenching method for the determination of Ag(Ⅰ) with melamine

作　　者：龙立平[1] 赵丽丽[1] 肖谷清[1] 

机构地区：[1]湖南城市学院化学与环境工程系,湖南益阳413000

出　　处：《工业水处理》2011年第5期72-75,共4页Industrial Water Treatment

基　　金：湖南省科技计划资助项目(2010HJ4123)

摘　　要：基于Ag(Ⅰ)对三聚氰胺的荧光熄灭作用,建立了测定Ag(Ⅰ)的荧光分析方法。在pH为5.0的HAc-NaAc缓冲体系中,测定的最大激发波长λex为256.0 nm,最大发射波长λem为363.0 nm,线性范围为2.0×10-6～2.4×10-2 mol/L,检出限为4.3×10-7 mol/L。将其用于废定影液中痕量Ag(Ⅰ)的测定,结果满意。A fluorometric method for the determination of Ag（Ⅰ） has been set up,according to the effect of Ag（Ⅰ） on the fluorescence quenching of melamine.In the HAc-NaAc buffer solution of pH=5.0,the maximum excitation and emission wavelengths of melamine are found to be 256.0 nm,363.0 nm,respectively.The linear range of determination for Ag（Ⅰ） is 2.0×10-6-2.4×10-2 mol/L,with a detection limit of 4.3×10-7 mol/L.The proposed method has been applied to the determination of trace Ag（Ⅰ） in fixer waste samples,and the results are satisfactory.

关 键 词：荧光法 荧光熄灭 三聚氰胺 

分 类 号：O657.3[理学—分析化学]