A new sensitive reagent for identifying Ag(+) and Hg(2+).
This paper describes the synthesis of a new reagent: N,N'-difuroyl thiourea for the purpose of improving coordination capacity of thiourea compounds. It has been characterized by IR, UV, MS and (1)H-NMR as well as elemental analytical data. According to the studies on its analytical performance, it is found that this reagent can be used to identify Ag(+) and Hg(2+). Both of their sensitivities and selectivities are the best in all methods for the time being. The new methods are simple and convenient, and can provide satisfactory results on synthetic and standard samples.
Ma
D
D
Department of Chemistry, Henan Normal University, Xinxiang, Henan 453002, China.
Dong
Y
Y
Wang
Y
Y