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