2008
DOI: 10.1016/j.snb.2008.04.001
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Simultaneous measurement of Pb, Cd and Zn using differential pulse anodic stripping voltammetry at a bismuth/poly(p-aminobenzene sulfonic acid) film electrode

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Cited by 136 publications
(65 citation statements)
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“…The sensitivity of the present system given by the slope of the linear relationship of I p vs [M 2+ ] was compared with other electrochemical systems [36][37][38][39][40][41][42] and presented in Table 1.…”
Section: +mentioning
confidence: 99%
“…The sensitivity of the present system given by the slope of the linear relationship of I p vs [M 2+ ] was compared with other electrochemical systems [36][37][38][39][40][41][42] and presented in Table 1.…”
Section: +mentioning
confidence: 99%
“…4A) -3 , an decreasing peak current and peak broadening were observed, which is likely to be the mass transfer limitation of metal ions diffusing out of the film during the stripping step 24 and the effect of hydrogen evolution. Indeed, the optimum Bi 3+ concentration has been evaluated for the complete formation of multi-component alloys, 25 the prevention of a high hydrogen evolution rate at negative potentials and the saturation effect of Bi-film on the surface of CPE. 16,18,26,27 As reported by Švancara et al, 16 the Bi 3+ concentration must be 10 times higher than the target analyte concentration to avoid a saturation effect.…”
Section: Effect Of Bismuth Concentrationmentioning
confidence: 99%
“…45 Estudos realizados comprovam que os BFE apresentam elevada sensibilidade, um sinal bem definido e altamente reprodutível, um grande intervalo de potencial catódico, uma boa resolução de picos vizinhos, e ainda são menos sensíveis do que os MFE ao oxigénio dissolvido. 43,44,[46][47][48] No entanto, a vantagem mais significativa dos BFEs é que a toxicidade do Bi é negligenciá-vel, ao contrário da extrema toxicidade do Hg usado na preparação dos MFEs. 41,44,45,47,49,50 Recentemente, encontram-se alguns trabalhos visando a determinação de metais por voltametria de redissolução em BFEs, [51][52][53] sendo no entanto escassos os trabalhos desenvolvidos tendo em vista a especiação dos mesmos em BFEs.…”
Section: Importância Da Determinação De Metais Em Amostras Biológicasunclassified