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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.accessioned2022-03-28T14:53:00Z
dc.date.accessioned2026-01-11T06:01:45Z
dc.date.available2022-03-28T14:53:00Z
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 logK2 = 8.32±013, at the 25°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.issn7930135
dc.identifier.urihttps://hdl.handle.net/11424/255944
dc.language.isoeng
dc.relation.ispartofReviews in Analytical Chemistry
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.subjectCalcium
dc.subjectConstant
dc.subjectMagnesium
dc.subjectPotentiometri
dc.subjectQuercetin
dc.subjectSpectrophotometri
dc.subjectStability
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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