期刊
ELECTROANALYSIS
卷 21, 期 12, 页码 1439-1442出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/elan.200804575
关键词
Bismuth; Gold microelectrode; Lead; Wine; Thin films
资金
- Fundacao de Apoio a Pesquisa do Estado de Sao Paulo (FAPESP)
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq)
Electrodeposition of bismuth on gold microelectrodes for determination of Pb(II) by square wave anodic stripping voltammetry (SWASV) was accomplished by an in situ procedure in alkaline solution. A linear calibration plot for Pb(II) in the concentration range 40 to 6700 nmol L-1 (r=0.998) was obtained, the detection limit was found to be 12.5 nmol L-1 (S/N = 3) and the relative standard deviation in Solutions containing 1 mu mol L-1 Pb(II) was 4% (n = 12). The analytical performance of the proposed sensor wits tested by measuring the Pb(II) concentration in a wine sample. The result Was in good agreement with the one obtained by GFAAS.
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