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Quercetin (3,3 ',4 ',5,7-pentahydroxyflavone) complexes with calcium(II) and magnesium(II), its potentiometric and spectrophotometric studies

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dc.contributor.authorsErdogan, G; Karadag, R
dc.date.accessioned2022-03-12T17:19:03Z
dc.date.accessioned2026-01-10T19:18:25Z
dc.date.available2022-03-12T17:19:03Z
dc.date.issued2005
dc.description.abstractIn this study, the stability constants of the complexes of quercetin formed with calcium(II) and magnesium(II) were determined potentiometrically by using Calvin-Bjerrum and Irving Rossotti methods and by spectrophotometry. The evaluated protonation constants of the ligand were found: logK(1) = 9.63 +/- 0.11 and logK(2) = 8.32 +/- 013, at the 25 degrees C. For the calcium and magnesium complexes logarithms of the stability constants were found: for Ca : logK = 2.91 +/- 0.04, and for Magnesium: logK = 3.51 +/- 0.07. From the results, the components of quercetin-metal complexes are given 1:1 (quercetin:metal ratio) both Ca(II) and Mg(II).
dc.identifier.doidoiWOS:000229028200002
dc.identifier.eissn2191-0189
dc.identifier.issn0793-0135
dc.identifier.urihttps://hdl.handle.net/11424/228050
dc.identifier.wosWOS:000229028200002
dc.language.isoeng
dc.publisherWALTER DE GRUYTER GMBH
dc.relation.ispartofREVIEWS IN ANALYTICAL CHEMISTRY
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectquercetin
dc.subjectmagnesium
dc.subjectcalcium
dc.subjectstability constant
dc.subjectpotentiometri
dc.subjectspectrophotometri
dc.subjectCONSTANTS
dc.subjectPLASMA
dc.titleQuercetin (3,3 ',4 ',5,7-pentahydroxyflavone) complexes with calcium(II) and magnesium(II), its potentiometric and spectrophotometric studies
dc.typearticle
dspace.entity.typePublication
oaire.citation.endPage23
oaire.citation.issue1
oaire.citation.startPage9
oaire.citation.titleREVIEWS IN ANALYTICAL CHEMISTRY
oaire.citation.volume24

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