Electrochemical study of chemically modified and screen-printed graphite electrodes with [(SbO)-O-V(CHL)(2)]Hex. Application for the selective determination of sulfide
| dc.contributor.author | Prodromidis, M. I. | en |
| dc.contributor.author | Veltsistas, P. G. | en |
| dc.contributor.author | Karayannis, M. I. | en |
| dc.date.accessioned | 2015-11-24T16:57:36Z | |
| dc.date.available | 2015-11-24T16:57:36Z | |
| dc.identifier.issn | 0003-2700 | - |
| dc.identifier.uri | https://olympias.lib.uoi.gr/jspui/handle/123456789/10596 | |
| dc.rights | Default Licence | - |
| dc.subject | potential sweep voltammogram | en |
| dc.subject | hydrogen-sulfide | en |
| dc.subject | general expression | en |
| dc.subject | sensor | en |
| dc.title | Electrochemical study of chemically modified and screen-printed graphite electrodes with [(SbO)-O-V(CHL)(2)]Hex. Application for the selective determination of sulfide | en |
| heal.abstract | The preparation and electrochemical characterization of graphite electrodes modified with hexadecylpyridinium-bis(chloranilato)-antimonyl(V), [(SbO)-O-V(CHL)(2)]Hex, (CMEs) as well as their behavior as electrocatalysts toward the oxidation of sulfide are described. The self-exchange rate constant k(0) of immobilized [(SbO)-O-V(CHL)(2)]Hex and the effect of the surface coverage were evaluated. [SbVO(CHL)(2)]Hex is a new compound. Synthesis protocol and some identification studies are given. The fabrication of screen-printed electrodes (SPEs) with a mixture of 5% (w/w) [(SbO)-O-V(CHL)(2)]Hex/graphite powder in 1.5% (w/v) ethyl cellulose in 2-butoxyethyl acetate is also described. SPEs, poised at +0.08 mV versus Ag/AgCl, at pH 6.5 were utilized for the determination of sulfide in simulated wastewater samples. Interference of various compounds was also tested. The proposed method correlates well with a colorimetric method. Calibration graphs were linear over the range 0.01-0.7 mM sodium sulfide and the CV was 2.8% (n = 8) for 0.1 mM sodium sulfide. Recovery ranged from 94 to 102%. Both [(SbO)-O-V(CHL)(2)]Hex CMEs and SPE showed very good storage stability. [SbVO(CHL)(2)]Hex CMEs showed poor working stability in contrast to printed electrodes, which operated with no remarkable loss of their initial activity for more than 100 runs. | en |
| heal.access | campus | - |
| heal.fullTextAvailability | TRUE | - |
| heal.identifier.secondary | <Go to ISI>://000089178600013 | - |
| heal.identifier.secondary | http://pubs.acs.org/doi/pdfplus/10.1021/ac0001784 | - |
| heal.journalName | Anal Chem | en |
| heal.journalType | peer reviewed | - |
| heal.language | en | - |
| heal.publicationDate | 2000 | - |
| heal.publisher | American Chemical Society | en |
| heal.recordProvider | Πανεπιστήμιο Ιωαννίνων. Σχολή Θετικών Επιστημών. Τμήμα Χημείας | el |
| heal.type | journalArticle | - |
| heal.type.el | Άρθρο Περιοδικού | el |
| heal.type.en | Journal article | en |
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