Premium
A New Procedure for Voltammetric Lead Determination Based on Coprecipitation and Centrifugation Preconcentration
Author(s) -
Kirgöz Ülkü Anik,
Tural Hüseyin,
Ertas F. Nil
Publication year - 2004
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200302789
Subject(s) - coprecipitation , detection limit , chemistry , centrifugation , dissolution , aqueous solution , voltammetry , chromatography , filtration (mathematics) , analytical chemistry (journal) , inorganic chemistry , electrode , electrochemistry , statistics , mathematics
An arrangement of a voltammetric cell specially designed to be compatible to both centrifugation and voltammetry was designed, allowing direct measurement without any need for dissolution or filtration steps. The procedure for the preconcentration via coprecipitation is described. The system was succesfully tested using trace amounts of Pb(II) ions in aqueous solution preconcentrated with Al(OH) 3 as the carrier precipitate and resulting peak currents were found much higher than those without applying centrifugation. The effects of the parameters on the resulting signal were examined and the detection limit was found as 2.2×10 −9 M.