Ultra-sensitive quantification of sub-nanomolar levels of tin by adsorptive stripping voltammetry by using N-nitrozo-N-phenylhydroxylamine as a selective chelating agent
In this paper, a simple and sensitive adsorptive stripping voltammetry method was developed for detection of Sn by using N-Nitrozo-N-Phenylhydroxylamine (Cupferron) as a selective complexing agent. The influence of pH and the nature of supporting electrolytes, concentration of ligand, preconcentration time and applied potential on were investigated. The detection limits were 0.12 ng/ml and the RSDat a concentration level of 50 ng/ml, was 1.5. The method has been applied for the determination of tin in human blood, edible oil and water samples with the satisfactory results.