Analytical Sciences

Abstract − Analytical Sciences, 15(4), 381 (1999).

Chemiluminescence Determination of Thiourea Using Tris(2,2'-bipyridyl)ruthenium(II)-KMnO4 System
Zhike HE, Fengwu WU * , Hui MENG, Liansheng LING, Liangjie YUAN, Qingyao LUO and Yun'e ZENG
Department of Chemistry, Wuhan University, Wuhan 430072, P. R. China
The emission produced by thiourea in oxidation by permanganate in acidic solution in the presence of Ru(bipy)32+ is used to determine 1.8x10-8 to 1.8x10-6 mol/l thiourea. The limit of detection is 1.0x10-8 mol/l and the relative standard deviation is 1.1% for a 1x10-5 mol/l thiourea solution (n=10). The method was applied satisfactorily to the determination of thiourea. (Keywords: Thiourea, chemiluminescence, tris(2,2'-bipyridyl)ruthenium(II))