Abstract：
:This paper reports on the use of platinum electrode modified with kaolin (K/Pt) and square wave voltammetry for analytical detection of trace lead(II) in pure water, orange and apple samples. The electroanalytical procedure for determination of the Pb(II) comprises two steps: the chemical accumulation of the analyte under open-circuit conditions followed by the electrochemical detection of the preconcentrated species using square wave voltammetry. The analytical performances of the extraction method has been explored by studying the incubating time, and effect of interferences due to other ions. During the preconcentration step, Pb(II) was accumulated on the surface of the kaolin. The observed detection and quantification limits in pure water were 3.6x10(-9)molL(-1) and 1.2x10(-8)molL(-1), respectively. The precision of the method was also determined; the results was 2.35% (n=5).
journal_name
Chemospherejournal_title
Chemosphereauthors
El Mhammedi MA,Achak M,Bakasse M,Chtaini Adoi
10.1016/j.chemosphere.2009.04.017subject
Has Abstractpub_date
2009-08-01 00:00:00pages
1130-4issue
8eissn
0045-6535issn
1879-1298pii
S0045-6535(09)00453-6journal_volume
76pub_type
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