New Simple Spectrophotometric Methods For The Determination Of Trace Level Silver(I) Using 1- [2- (Allylamino) -1-Methylethyl] Thiocarbamide

Abstract

Ag(I) with 1- [2- (allylamino) -1-methylethyl] thiocarbamide the rapid reacts to form brownish-yellow complex and also it to form to form brownish complexes in presence of the phenanthroline(Phen)and α,α′ - dipyridine (α,α′ -dip). The absorption spectra of the Ag (I)- AMTICsystem is a curve with the maximum absorbance at 460 nm and molar absorption coefficient of 1.8.104 l mol−1 cm−1. The absorption spectra of the Ag(I)-AMTIC- Phen and Ag(I)-AMTIC- α,α′-dip systems is a curve with the maximum absorbances at 476 nm and 473 nm and molar absorption coefficients of 2.53.104 l mol−1 cm−1 and 2.38.104 l mol−1 cm−1, respectively. The absorbance was linear for 0.234–2.31mkg ml−1 of Ag (I) in the Ag(I)- AMTIC system and 0.168–2.242 mkg ml−1 and 0.176–2.232 mkg ml−1 of Ag (I) in the Ag(I)-AMTICPhen and Ag(I)-AMTIC- α,α′-dipsystems, respectively. The proposed methods was successfully used in the determination of Ag(I) in several synthetic mixtures. The relative standard deviation (n = 5) was 0%–2.0%, for Ag(I), indicating that this methods are highly precise and reproducible. The results obtained agree well with synthetic mixture samples analyzed by inductively coupled plasma optical emission spectrometry(ICP-OES).