A novel approach to monitoring of the diffusion junction potential in speciation studies by polarography under very acidic conditions : Part I : The reversible cd(ii)-picolinic acid system
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| dc.contributor.author | Billing, Caren
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| dc.contributor.author | Cukrowski, Ignacy
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| dc.contributor.author | Jordan, Blake
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| dc.date.accessioned | 2014-05-22T13:25:20Z | |
| dc.date.available | 2014-09-30T00:20:06Z | |
| dc.date.issued | 2013-09 | |
| dc.description.abstract | A new polarographic procedure has been developed for the study of metal-ligand equilibria at pH<2 by applying an in situ monitoring of the diffusion junction potential by introducing a noncomplexing witness metal ion, Tl(I). As a case study, this procedure was applied to the Cd(II)-picolinic acid (pyridine-2-carboxylic acid) system; DCTAST polarography was employed at 25 8C and ionic strength of 0.25–0.5 M (H,Na)NO3. Log b values of 4.26 0.03, 7.86 0.11 and 10.47 0.12 were obtained for the ML, ML2 and ML3 complexes, respectively, and compare well to literature values. The first log b (6.27 0.07) value for the MLH species was successfully determined, for which a crystal structure has been reported recently. | en_US |
| dc.description.librarian | hb2014 | en_US |
| dc.description.sponsorship | National Research Foundation (NRF) and the University of the Witwatersrand | en_US |
| dc.description.uri | http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-4109 | en_US |
| dc.identifier.citation | Billing, C, Cukrowski, I & Jordan, B 2013, 'A novel approach to monitoring of the diffusion junction potential in speciation studies by polarography under very acidic conditions : Part I : The reversible cd(ii)-picolinic acid system', Electroanalysis, vol. 25, no. 9, pp. 2221-2230. | en_US |
| dc.identifier.issn | 1040-0397 (print) | |
| dc.identifier.issn | 1521-4109 (online) | |
| dc.identifier.other | 10.1002/elan.201300256 | |
| dc.identifier.uri | http://hdl.handle.net/2263/39877 | |
| dc.language.iso | en | en_US |
| dc.publisher | Wiley-Blackwell | en_US |
| dc.rights | © 2013 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim. This is the pre-peer reviewed version of the following article : A novel approach to monitoring of the diffusion junction potential in speciation studies by polarography under very acidic conditions : Part I : The reversible cd(ii)-picolinic acid system in Electroanalysis, vol. 25, no. 9, pp. 2221-2230, 2013. doi : 10.1002/elan.201300256 which has been published in final form at : http://onlinelibrary.wiley.com/journal/10.1002/(ISSN)1521-4109 | en_US |
| dc.subject | Cadmium | en_US |
| dc.subject | Diffusion junction potential | en_US |
| dc.subject | Formation constants | en_US |
| dc.subject | Picolinic acid | en_US |
| dc.subject | Voltammetry | en_US |
| dc.title | A novel approach to monitoring of the diffusion junction potential in speciation studies by polarography under very acidic conditions : Part I : The reversible cd(ii)-picolinic acid system | en_US |
| dc.type | Preprint Article | en_US |
