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Title
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Significance of wave form parameters in stripping chronopotentiometric metal speciation analysis
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Author
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Abstract
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| An analysis is presented of the significance of stripping chronopotentiometric (SCP) stripping peak parameters (peak potential, E-p, and peak half-width, w(1/2)) for determination of metal ion speciation. This study focuses on depletive SCP (low stripping current, Itau constant), and considers the change in E-p and w(1/2) in the presence of complexing and/or adsorbing ligands at both a conventional mercury drop electrode (HMDE) and a micro mercury droplet. We show that at a microelectrode, or at sufficiently long deposition time at a HMDE, the changes in E-p and w(1/2) can be related to metal speciation in the bulk solution. Unlike transient stripping voltammetric methods such as DP-SV, depletive SCP is applicable even in the presence of adsorption of ligand and induced metal ion adsorption. (C) 2002 Elsevier Science B.V. All rights reserved. |
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Language
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English
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Source (journal)
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Journal of electroanalytical chemistry and interfacial electrochemistry. - Lausanne, 1967 - 1992
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Publication
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Lausanne
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2002
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ISSN
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0022-0728
[print]
2590-2954
[online]
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DOI
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10.1016/S0022-0728(02)01157-9
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Volume/pages
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535
:1-2
(2002)
, p. 11-25
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Article Reference
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PII S0022-0728(02)01157-9
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ISI
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000179613600002
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Medium
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E-only publicatie
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Full text (Publisher's DOI)
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Full text (publisher's version - intranet only)
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