Determination of Sodium Diethyldithiocarbamate in Water by Anodic Voltammetry Using a Boron‐Doped Diamond Electrode

Abstract

An electrochemical study was made of the anodic behavior of sodium diethyldithiocarbamate (DEDTC) using a boron-doped diamond electrode (BDDE) in sodium sulfate supporting electrolyte. This paper presents a new alternative for the electroanalytical determination of DEDTC in protic media, using cyclic voltammetry or chronoamperometry. Linear plots of current vs. concentration correlated with anodic stepwise oxidation were obtained in delimited potential ranges with very good correlation coefficients.

Anodic Voltammetry of Thioacetamide and its Amperometric Determination in Aqueous Media

“…A Pt foil was used as counter electrode, and a saturated calomel electrode (SCE) as reference electrode. The commercial BDD electrode supplied by Windsor Scientific Ltd. for electroanalytical use, of the same type as in our previous studies [46][47][48], a mirror-polished doped polycrystalline industrial diamond (microcrystalline; doping degree ~ 0.1% boron), was previously stabilized in our laboratory by mild electrochemical oxidation and several hundred repeated alternate polarizations by cycling between +1.8 V and -1 V vs. SCE potential limits in a neutral sodium sulfate supporting electrolyte. Before starting each series of electrochemical measurements, the working electrode was cleaned, degreased, simply, on a wetted pad without alumina powder.…”

“…Regarding the present paper, the sensitivity can be augmented by hydrodynamic conditions, but interferences from a series of sulfur-containing compounds, such as thiourea [41], sodium diethyldithiocarbamate [46], thiosulfate [49] and others [40], are normal and evident. Their effects in the anodic potential range do not require any additional demonstration.…”

“…The progressive successive addition in a stirred background solution is a homologated procedure [46,48,50]. It is a simple and useful preliminary way which certifies the principal aspects of a continuous detection without an alteration in the linearity of the amperometric signal at a progressive increase in sample concentration.…”

“…These characteristics make it significantly superior to other commonly used electrode materials [40][41][42][43][44][45][46][47]. Owing to the new possibilities offered by boron-doped diamond film as an advanced material providing the basis for elaboration of the adequate solid sensors, the electrochemical detection of the sulphur-containing organics is presently a developing subject [3,40,41,46]. The recently reported detection of examples of this type compounds on BDD has stimulated us to explore a more detailed application and to investigate the electrochemical behaviour of TAA and the exploitation of its anodic oxidation characteristics for amperometric determination.…”

Anodic Determination of Acetylsalicylic Acid at a Mildly Oxidized Boron-Doped Diamond Electrode in Sodium Sulphate Medium

“…International Journal of Electrochemistry Boron-doped diamond (BDD) is a very important material for electroanalysis, since it exhibits several electrochemically valuable properties such as its very wide electrochemical window in aqueous solutions resulting from the high overpotentials of the oxygen and hydrogen evolution reactions, low and stable voltammetric and amperometric background current, its excellent chemical and electrochemical stability in aggressive conditions, and its good responsiveness to a range of analytes without any conventional pretreatment [49][50][51][52][53][54][55][56][57][58][59].…”