Composite Graphite-Mercury Electrode for Anodic Stripping Voltammetry.

Matson, Wayne R.; Roe, David K.; Carritt, Dayton E.

doi:10.1021/ac60231a043

Cited by 88 publications

(30 citation statements)

References 6 publications

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“…Since that time, detection limits for h e a y metals have been improved significantly through the use of ASV, which was first applied to air samples in the mid-1960s [44]. Anodic stripping voltammetry of heavy metals in air samples has been conducted at both MFEs [44,45] and HMDEs [46] for many years?…”

Section: Heavy Metal Analysismentioning

confidence: 99%

Electroanalytical applications in occupational and environmental health

Ashley

1994

Electroanalysis

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Electroana1:Tical chemistry has been used for years in the occupational and environmental health fields. Portable sensors and analytical devices based on electrochemical (EC) methods are commonly used on-site in the workplace. Laboratory EC methods also have been used extensively for the analysis of industrial hygiene and related samples. Recent advances in electroanal>-tical methodolog may lead to new analytical applications in the occupational health arena, both in the laboratory as well as on-site in the xvorkplace. Applications in heavy metals analysis, analysis for inorganic and organic species, and bioanalysis are exemplified. This article provides an overview of the history of EC analysis for industrial hygiene purposes, and also summarizes current and newly developed applications of electroanaljdcal methods in occupational and environmental health.

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Section: Heavy Metal Analysismentioning

confidence: 99%

Electroanalytical applications in occupational and environmental health

Ashley

1994

Electroanalysis

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“…The WIGE exhibits a hydrogen overvoltage of 500-600 mV and can be used up to about -0.8 volt vs. S.C.E. [20]. Moreover, this electrode showed poor stability in acidic solutions (pH < 2) [21].…”

Section: Limit Of Detection and Interferencesmentioning

confidence: 99%

Anodic stripping voltammetry at mercury “films” deposited on conducting poly(3‐methylthiophene) electrodes

et al. 1992

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The incorporation of mercury into a conducting poly (3-methylthiophene) [P3MT] film results in an effective electrode for the analysis of lead in aqueous media. Mercury "films" were deposited electrochemically following the electropolymerization step. The resulting surfaces were characterized by cyclic voltammetry, scanning electron microscopy, and X-ray analysis techniques. The analytical performance of the electrode was examined for the determination of lead(I1) ions in aqueous media. The differential pulse peak current, at -0.59 V, is ca. 10-fold larger than the corresponding peak at the plain platinum electrode. Linear calibration curves are obtained for lead concentrations ranging from 0.1 to 0.8 ppm. The detection limit is 0.05 ppm. The relative standard deviation (at the 0.3 ppm level) is 2%. Interference effects were also studied. The new polymer modified electrode showed great promise toward resistance to surfactant fouling. The most common methods used for preconcentration are solution evaporation, solvent extraction, precipitation, ion exchange, and electrochemical methods. Electrochemical and ion-exchange methods are less susceptible to contamination or modification of the species of interest in a matrix where interference is likely to cause complications for the analysis. The determination of trace metals using voltammetric techniques, such as anodic stripping voltammetry (Am), with detection limits down to lo-'' M, is one of the few analytical methods sensitive enough for direct analysis at these concentration levels. The use of mercury or mercury thin films, as the working electrode, has prevailed in anodic stripping techniques [ 61. Chemically modified electrodes, on the other hand, have been employed to enhance selectivity and to prevent electrode fouling in analytical measurements of many substances [7]. Several studies showed that the chemically modified carbon paste electrode could be used successfully for the determination of some metal cations in solution. For example, Baldwin and co-workers proposed the use of a carbon paste electrode containing dimethylglyoxime for the determination of nickel( 11) [a] and 2,9-dimethyl-l,lO-phenanthroline for the determina-

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“…The electrochemical methods described in this book could be performed with the improved electronic current and voltage measuring devices available then (Enke and Baxter, 1964). Scientists and engineers experimented with ASV during the next few years, and some of their publications include: Shain (1963) and Barendrecht (1967) specifically on ASV; Reilley andMurray (1963), andReilley (1963) and Adams (1963) on electrochemistry and electrode processes; Matson, Roe, and Carritt (1965) and Roe and Toni (1965) on the theory and development of solid carbon electrodes; Enke and Baxter (1964) on instrumentation; and Perone and Birk (1965) on de"'" rivative techniques. A list of authors writing on ASV analyses for specific elements include: Perone-Ag (1963), Perone and KretlowHg (1965), Florence -Fe (1970), Sinko andDolezal -Cu, Cd, Pb, Zn (1970), Maney-speciation (1192), Zirino and Healy-Zn (1970), Zirino and Yamamoto-Cu, Cd, Pb, Zn (1972), Ellis-Cu, Cd, Pb (1973), and , Clem (1973 and, SluytersRehbach and Sluyters (1975), Stulik and Hora (1976), Subramanian and Rao (1976), and Zirino and Lieberman (1974) 1976, p.S;and Young and others, 1972, p.21): (f) aerial fallout including lead from industrial and automobile emissions (Young and others, 1972, p.21;Cantwell and others, 1972;p.95;Goldberg, 1972, p.3;and Chow and others, 1973, p.SSl).…”

mentioning

confidence: 99%

Investigations on the use of anodic stripping voltammetry for the analyses of lead in saline environments

Case¹

1978

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Composite Graphite-Mercury Electrode for Anodic Stripping Voltammetry.

Abstract: The authors are grateful to C.S.I.R.

Cited by 88 publications

References 6 publications

Electroanalytical applications in occupational and environmental health

Electroanalytical applications in occupational and environmental health

Anodic stripping voltammetry at mercury “films” deposited on conducting poly(3‐methylthiophene) electrodes

Investigations on the use of anodic stripping voltammetry for the analyses of lead in saline environments

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