1985
DOI: 10.1021/ac00284a043
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Pulsed amperometric detection of electroinactive adsorbates at platinum electrodes in a flow injection system

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Cited by 60 publications
(15 citation statements)
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“…They used it for the detection of alcohols, formic acid and cyanide in flow-injection systems [1,2]. Later, Johnson and other analysts also developed PAD methods for amino acids, aldehydes, carbohydrates, sulfite and sulfide [3,4].…”
Section: Introductionmentioning
confidence: 99%
“…They used it for the detection of alcohols, formic acid and cyanide in flow-injection systems [1,2]. Later, Johnson and other analysts also developed PAD methods for amino acids, aldehydes, carbohydrates, sulfite and sulfide [3,4].…”
Section: Introductionmentioning
confidence: 99%
“…This is not the case for short delay times. The direct and indirect detection modes are well known in PAD [7,8]. A disadvantage of surface oxide formation is the relatively large background current ( A) in contrast to background currents of nA in constant-potential amperometry.…”
Section: Resultsmentioning
confidence: 99%
“…Thus difficulties resulting from electrode fouling are avoided, which are a problem for most of the above mentioned compounds. Additionally PAD waveforms can be optimized to utilize the formation of surface oxide at the G. Weber Institut fu¨r Spektrochemie und angewandte Spektroskopie, Bunsen-Kirchhoff-Strasse 11, D-44139 Dortmund, Germany working electrode for catalytic oxidation of analytes or even for indirect detection of electroinactive analytes by suppression of the background current [8]. The detection mechanisms are not fully understood in every case, but it is clear that (a) adsorption effects at noble metal electrodes or at the respective metal-oxide surfaces, (b) catalytic oxidation of analytes at those surfaces and (c) the kinetics of oxide formation play an important role [1,3,[5][6][7].…”
Section: Introductionmentioning
confidence: 99%
“…A detecção amperométrica pulsada (PAD ou MPA) foi utilizada por diversos autores acoplada a sistemas FIA, 3,31,[35][36][37][38][39][40][41] eletroforese capilar (EC) [42][43][44] e cromatografia líquida de alta eficiência (CLAE), correspondendo esta última ao maior número de artigos disponibilizados na literatura sobre o assunto. 33,34,[45][46][47][48][49][50][51][52][53][54][55][56][57] Nestes sistemas, a principal função da detecção pulsada foi promover a limpeza eletroquímica constante e ativação da superfície do eletrodo de trabalho.…”
Section: Limpeza E Ativação Da Superfície Do Eletrodo Através Da Mpaunclassified