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Simultaneous Determination of Antimony and Lead in Gunshot Residue by Cathodic Adsorptive Stripping Voltammetric Methods
Author(s) -
Erden Sevcan,
Durmus Zehra,
Kılıç Esma
Publication year - 2011
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.201000612
Subject(s) - antimony , stripping (fiber) , detection limit , chemistry , cathodic stripping voltammetry , graphite furnace atomic absorption , atomic absorption spectroscopy , analytical chemistry (journal) , graphite , cathodic protection , materials science , inorganic chemistry , chromatography , electrode , electrochemistry , physics , quantum mechanics , organic chemistry , composite material
Differential pulse cathodic adsorptive stripping (DPCAdSV) and square wave cathodic adsorptive stripping (SWCAdSV) voltammetric methods were developed for the determination of antimony and lead in gunshot residues. Linear working ranges for DPCAdSV and SWCAdSV methods were (2.0×10 −9 –5.0×10 −7 ) M and (2.0×10 −9 –7.0×10 −7 ) M for antimony and 2.0×10 −9 –3.0×10 −7 M (both methods) for lead. The detection of antimony limits were found to be 1.3×10 −9 M for DPCAdSV and 7.3×10 −10 M for SWCAdSV while the corresponding values for lead were 3.0×10 −9 M and 5.8×10 −10 M. Antimony and lead contents obtained by these methods in gunshot residues are in good agreement with those obtained by graphite furnace atomic absorption spectrometric method within a confidence limit of 95%.