A Simple,Fast,and Inexpensive Simultaneous Determination of Trace Bismuth(III) and Lead(II) in Water Samples by Adsorptive Stripping Voltammetry

A simple,fast,and inexpensive voltammetric method for the simultaneous determination of trace bismuth(iii) and lead(ii) using (hg(ag)fe) as a working electrode was optimized. for adsorptive stripping voltammetric determination of bi(iii) and pb(ii) in a single scan,the cupferron was applied as a complexing agent. experimental conditions under which these elements can be simultaneously detected include 0.1 mol l-1 acetate buffer (ph = 4.6),1 × 10-4 mol l-1 cupferron,accumulation potential-0.05 v,and accumulation time 30 s. the experiments were performed without deaeration of the solutions. the calibration graph was linear from 2 × 10-9 mol l-1 to 1 × 10-7 mol l-1 for the simultaneous presence of bismuth and lead. the detection limits for preconcentration time of 30 s were 6.7 × 10-10 mol l-1 and 8.8 × 10-10 mol l-1 for bismuth and lead,respectively. the application of this procedure was tested by analyzing certified reference material (sps-ww1 wastewater) and lake zemborzyce water (eastern areas of poland). © 2017 malgorzata grabarczyk and marzena adamczyk.