Synthesis and Analytical Application of Bis(2-diazoaminobenzothiazoyl)-benzidine to Determination of Mercury Ion by Fluorimetry  

作　　者：JIANG Run-sheng FENG Feng CHEN Ze-zhong BAI Yun-feng LIN Sen FU Guo-liang 

机构地区：[1]School of Chemistry, Shanxi Datong University, Datong 037009, P. R. China [2]Department of Chemistry, Nanchang University, Nanchang 330047, P R. China [3]Institute of Organic Chemistry, Shanxi Datong University, Datong 037009, P R. China

出　　处：《Chemical Research in Chinese Universities》2009年第5期628-632,共5页高等学校化学研究（英文版）

基　　金：Supported by the National Natural Science Foundation of China(No.20575057);the Natural Science Foundation of Shanxi Province,China(No.2009011015-1)

摘　　要：A new fluorescent reagent bis（2-diazoaminobenzothiazoyl）-benzidine（BDABTB） was synthesized by combining benzothiazole with benzidine and triazene reagent. The product was confirmed by elemental analysis, ^1H NMR and FTIR. The excitation and emission wavelengths of BDABTB were 214 and 338 nm in a basic medium, respectively. The fluorescence was quenched by Hg^2＋ selectively and sensitively. The linear range of Hg^2＋ was 1.0×10^-8-1.0×10^-5 mol/L with a detection limit of 5.0×10^-10 mol/L. It has been used to determine trace Hg^2＋ in water sample with satisfactory results.A new fluorescent reagent bis（2-diazoaminobenzothiazoyl）-benzidine（BDABTB） was synthesized by combining benzothiazole with benzidine and triazene reagent. The product was confirmed by elemental analysis, ^1H NMR and FTIR. The excitation and emission wavelengths of BDABTB were 214 and 338 nm in a basic medium, respectively. The fluorescence was quenched by Hg^2＋ selectively and sensitively. The linear range of Hg^2＋ was 1.0×10^-8-1.0×10^-5 mol/L with a detection limit of 5.0×10^-10 mol/L. It has been used to determine trace Hg^2＋ in water sample with satisfactory results.

关 键 词：Bis（2-diazoaminobenzothiazoyl）-benzidine Mercury Fluorescence quenching 

分 类 号：O625.631[理学—有机化学] O614.243[理学—化学]