Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/33978
DC FieldValueLanguage
dc.contributor.authorTsai, D.M.en_US
dc.contributor.author曾志明zh_TW
dc.contributor.authorKumar, A.S.en_US
dc.contributor.authorZen, J.M.en_US
dc.date2006zh_TW
dc.date.accessioned2014-06-06T07:46:58Z-
dc.date.available2014-06-06T07:46:58Z-
dc.identifier.issn0003-2670zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/33978-
dc.description.abstractWe report here a highly stable and sensitive chemically modified screen-printed carbon electrode (CMSPE) for sulfide analysis. The CMSPE was prepared by first ion-exchanging ferricyanide into a Tosflex anion-exchang polymer and then sealing with a tetraethyl orthosilicate sol-gel,e layer. The sol-gel overlayer coating was crucial to stabilize the electron mediator (i.e., Fe(CN)(6)(3-)) from leaching. The strong interaction between the oxy-hydroxy functional group of sol-gel and the hydrophilic sites of Tosflex makes the composite highly rigid to trap the ferricyanide mediator. An obvious electrocatalytic sulfide oxidation current signal at similar to 0.20V versus Ag/AgCl in pH 7 phosphate buffer solution was observed at the CMSPE. A linear calibration plot over a wide range of 0.1 mu M to 1 mM with a slope of 5.6 nA/mu M was obtained by flow injection analysis. The detection limit (S/N = 3) was 8.9 nM (i.e., 25.6 ppt). Practical utility of the system was applied to the determination of sulfide trapped from cigarette smoke and sulfide content in hot spring water. (c) 2005 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationAnalytica Chimica Actaen_US
dc.relation.ispartofseriesAnalytica Chimica Acta, Volume 556, Issue 1, Page(s) 145-150.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.aca.2005.05.038en_US
dc.subjectferricyanideen_US
dc.subjectTostlexen_US
dc.subjectsol-gelen_US
dc.subjectscreen-printed electrodeen_US
dc.subjectsulfideen_US
dc.subjectflow-injection analysisen_US
dc.subjectsulfur-containing-compoundsen_US
dc.subjecthydrogen-sulfideen_US
dc.subjectamperometric determinationen_US
dc.subjectanalytical-chemistryen_US
dc.subjectascorbic-aciden_US
dc.subjectsensoren_US
dc.subjectn,n'-diphenyl-p-phenylenediamineen_US
dc.subjectmediaen_US
dc.subjectionen_US
dc.titleA highly stable and sensitive chemically modified screen-printed electrode for sulfide analysisen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.aca.2005.05.038zh_TW
item.fulltextno fulltext-
item.grantfulltextnone-
item.openairetypeJournal Article-
item.languageiso639-1en_US-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
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