Electrochemical lead separation from copper,copper alloy,ailver and silver alloy for isotope ratio determination in archaeometric investigations

摘要

The possibility of electrochemical oxidation of Pb~2+ to PbO_2 as a method of isolation of lead in lwo concentrations in copper and dilver matrixes was studied.Suitable eelctrolysis cell was developed ant the influence of various factors (electrode surface and state,reaction time,temperature,electrolyte volume,acidity,concentration of indifferent electrolyte,siirring rate and current density)on the efficiency of the process was evaluated.The accuracy and peparoucibility of hte mothod were estimated by determinatin of hte quantity of lead in SRMs by inducively coupled plasma atomic emission spectrometry (ICP-AES0and atomic absorption spectroscopy (AAS).By means of ICP-mass spectrometry (MS),thelead isotopic ratios in SRMS were determined.