Cathodic stripping coulometry of lead

Laitinen, Herbert A.; Watkins, Noel H.

doi:10.1021/ac60358a055

Cited by 41 publications

(38 citation statements)

References 40 publications

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“…Electrochemical oxidation of Pb 2þ (aq) leads to PbO 2 deposits on platinum electrodes at potentials more positive than þ 1.0 V [37]. However, no anodic peaks were recorded upon attachment of a-PbO 2 and b-PbO 2 on PIGEs and carbon paste electrodes [25].…”

Section: Electrochemistry Of Reference Materialsmentioning

confidence: 99%

Electrochemical Characterization of Archaeological Tin‐Opacified Lead‐Alkali Glazes and Their Corrosion Processes

Doménech‐Carbó

2005

Electroanalysis

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The electrochemical response of weathered and unweathered archaeological tin-opacified glazes attached to paraffinimpregnated graphite electrodes is described. Upon comparison with the square wave voltammetric response of SnO 2 , PbO and PbO 2 , Sn-and Pb-centered reduction processes can be characterized. Reduction of Sn(IV) involves the stepwise formation of solid Sn(II) and Sn metal, successively, at potentials of À 0.08 and À 0.55 V vs. AgCl/Ag. Reduction of network-modifier Pb(II) in glazes occurs at À 0.5 V and is accompanied by the reduction of networkforming Pb(IV) at potentials ranging from þ 0.65 to þ 0.20 V, confirming the presence of such centers in glazes. Voltammetric data suggest the presence of small amounts of Sn(II) resulting from the reduction of cassiterite during the firing process. A series of correlations between the peak currents can be established, indicating that the weathering process obeys a kinetic process rather than a equilibrium-like situation.

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Section: Electrochemistry Of Reference Materialsmentioning

confidence: 99%

Electrochemical Characterization of Archaeological Tin‐Opacified Lead‐Alkali Glazes and Their Corrosion Processes

Doménech‐Carbó

2005

Electroanalysis

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“…Classical ™noble∫ metal electrodes [25] and glassy carbon electrodes [26] can sometimes be limited in terms of sensitivity by surface oxidation and reduction processes. New electrode materials have been suggested to avoid both of these problems, with highly boron-doped diamond (BDD) having been successfully employed recently [27].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Electrochemical Detection and Determination of Lead and Copper at Boron-Doped Diamond Film Electrodes

et al. 2002

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“…The early work in the late 1960's carried out by Yoshimori et al [6], Hraba Ânkova Â et al [7] and Miwa et al [8] utilized various platinum electrodes, although these methods invariably involved lengthy deposition times, and their applications were limited. Accordingly, others have experimented with alternative electrode materials including Kinard and Propst's work with a conducting glass electrode [9] and Laitinen and Watkins' use of a conductive tin oxide electrode [10]. Generally, these methods were successful, although limited to relatively clean samples such as rain-water.…”

Section: Introductionmentioning

confidence: 99%

Sono-Cathodic Stripping Voltammetry of Lead at a Polished Boron-Doped Diamond Electrode: Application to the Determination of Lead in River Sediment

et al. 1999

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Ultrasonically-assisted cathodic stripping voltammetry at a boron-doped diamond electrode, has been developed for the detection of lead. At concentrations above 3 mM, linear sweep voltammetry was used to give the analytical signal from a cathodic strip of electrodeposited PbO 2 ; linearity was observed from 3±100 mM, with 3 mM being the lower detection limit. Square-wave voltammetry was then employed for the cathodic stripping step, to lower the detection limits of the technique while retaining linearity to the order of 10 À8 M. The procedure involves ultrasonic electrode cleaning, cathodic preconditioning and sono-anodic deposition of PbO 2 . This novel analytical tool is mercuryfree, oxygen insensitive and highly speci®c towards lead, yet still offers scope for further elemental diversity, particularly for the detection of copper and iron. The square-wave sono-cathodic stripping voltammetry technique was combined with an ultrasonically assisted acid digestion protocol to successfully determine the lead content of a contaminated sample of river sediment, offering signi®cant time saving over the currently used analytical procedure.

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Cathodic stripping coulometry of lead

Cited by 41 publications

References 40 publications

Electrochemical Characterization of Archaeological Tin‐Opacified Lead‐Alkali Glazes and Their Corrosion Processes

Electrochemical Characterization of Archaeological Tin‐Opacified Lead‐Alkali Glazes and Their Corrosion Processes

Simultaneous Electrochemical Detection and Determination of Lead and Copper at Boron-Doped Diamond Film Electrodes

Sono-Cathodic Stripping Voltammetry of Lead at a Polished Boron-Doped Diamond Electrode: Application to the Determination of Lead in River Sediment

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