1998
DOI: 10.1590/s0103-50531998000600005
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Polarographic and Spectrophotometric Study of Lead Complexes with Diethanoldithiocarbamate

Abstract: Foram estudados aspectos experimentais e teóricos sobre o comportamento do complexo de chumbo com dietanolditiocarbamato (DEDC), em solução. A reação ocorre através da formação de um precipitado amarelo, o qual é solúvel em excesso de ligante e alguns solventes polares. Os resultados das análises, elementar e gravimétrica, mostram uma relação estequiométrica de 1:2 (Pb:DEDC), comprovada nos estudos potenciométricos. A aplicação da equação de Lingane, nas formas estendida e simplificada, foi avaliada na determi… Show more

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“…Dithiocarbamates, such as sodium diethyldithiocarbamate (DDC) and ammonium pyrrolidinedithiocarbamate (APDC), have been widely used as chelating agents for the separation, preconcentration and determination of trace metals because of their thermodynamically stable metal complexes. 14,15 Dithiocarbamate compounds have sulfur atoms as electrondonor in their structures. Uncharged chelates form when metal ions react with bifunctional ligands, such as dithiocarbamates, dithizone, oxine etc.…”
Section: Introductionmentioning
confidence: 99%
“…Dithiocarbamates, such as sodium diethyldithiocarbamate (DDC) and ammonium pyrrolidinedithiocarbamate (APDC), have been widely used as chelating agents for the separation, preconcentration and determination of trace metals because of their thermodynamically stable metal complexes. 14,15 Dithiocarbamate compounds have sulfur atoms as electrondonor in their structures. Uncharged chelates form when metal ions react with bifunctional ligands, such as dithiocarbamates, dithizone, oxine etc.…”
Section: Introductionmentioning
confidence: 99%