{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,25]],"date-time":"2025-10-25T12:09:59Z","timestamp":1761394199389,"version":"build-2065373602"},"reference-count":33,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2012,6,19]],"date-time":"2012-06-19T00:00:00Z","timestamp":1340064000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Luminescence"],"published-print":{"date-parts":[[2013,5]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>A determination method for Co(II), Fe(II) and Cr(III) ions by luminol\u2010H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> system using chelating reagents is presented. A metal ion\u2010chelating ligand complex with a Co(II) ion and a chelating reagent like ethylenediaminetetraacetic acid (EDTA) produced highly enhanced chemiluminescence (CL) intensity as well as longer lifetime in the luminol\u2010H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> system compared to metals that exist as free ions. Whereas free Cu(II) and Pb(II) ions had a strong catalytic effect on the luminol\u2010H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> system, significantly, the complexes of Cu(II) and Pb(II) with chelating reagents lost their catalytic activity due to the chelating reagents acting as masking agents. Based on the observed phenomenon, it was possible to determine Co(II), Fe(II) and Cr(III) ions with enhanced sensitivity and selectivity using the chelating reagents of the luminol\u2010H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> system. The effects of ligand, H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> concentration, pH, buffer solution and concentrations of chelating reagents on CL intensity of the luminol\u2010H<jats:sub>2<\/jats:sub>O<jats:sub>2<\/jats:sub> system were investigated and optimized for the determination of Co(II), Fe(II) and Cr(III) ions. Under optimized conditions, the calibration curve of metal ions was linear over the range of 2.0\u2009\u00d7\u200910<jats:sup>\u20108<\/jats:sup> to 2.0\u2009\u00d7\u200910<jats:sup>\u20105<\/jats:sup>\u2009M for Co(II), 1.0\u2009\u00d7\u200910<jats:sup>\u20107<\/jats:sup> to 2.0\u2009\u00d7\u200910<jats:sup>\u20105<\/jats:sup>\u2009M for Fe (II) and 2.0\u2009\u00d7\u200910<jats:sup>\u20107<\/jats:sup> to 1.0\u2009\u00d7\u200910<jats:sup>\u20104<\/jats:sup>\u2009M for Cr(III). Limits of detection (3\u03c3\/s) were 1.2\u2009\u00d7\u200910<jats:sup>\u20108<\/jats:sup>, 4.0\u2009\u00d7\u200910<jats:sup>\u20108<\/jats:sup> and 1.2\u2009\u00d7\u200910<jats:sup>\u20107<\/jats:sup>\u2009M for Co(II), Fe(II) and Cr(III), respectively. Copyright \u00a9 2012 John Wiley &amp; Sons, Ltd.<\/jats:p>","DOI":"10.1002\/bio.2392","type":"journal-article","created":{"date-parts":[[2012,6,19]],"date-time":"2012-06-19T12:33:58Z","timestamp":1340109238000},"page":"372-377","source":"Crossref","is-referenced-by-count":21,"title":["A chelate complex\u2010enhanced luminol system for selective determination of Co(II), Fe(II) and Cr(III)"],"prefix":"10.1002","volume":"28","author":[{"given":"Kyung Min","family":"Kim","sequence":"first","affiliation":[{"name":"Department of Chemistry Kyungpook National University  Daegu 702\u2010701 Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Young Ho","family":"Kim","sequence":"additional","affiliation":[{"name":"Research Institute of Advanced Energy Technology Kyungpook National University  Daegu 702\u2010701 Korea"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sang\u2010Hyub","family":"Oh","sequence":"additional","affiliation":[{"name":"Center for Gas 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