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Improving Fluorometric Determination of Water Content in Aprotic Solvents

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cris.lastimport.scopus2024-02-12T20:00:46Z
dc.abstract.enA fluorometric method allowing quantification of minute amounts of water in highly lipophilic solvents is proposed. This approach takes advantage of resonance energy transfer between 4-methylumbelliferone and Sudan I. The conditions required to observe effective energy transfer have been elucidated. The emission band of the donor molecule (4-methylumbelliferone) depends strongly on the water content-its position is affected by protolytic reactions occurring between the fluorescent dye and water in lipophilic solvent media. In consequence, the extent of overlap between the emission band of the donor and absorption peak of the acceptor scales with the water concentration. The sensitivity of this optical system can be considerably increased by addition of organic bases. The dependence of the emission band of 4-methylumbelliferone/Sudan I system on minute amount of water present in lipophilic solutions opens up possibility of determination of water content in these media at the unique wavelength, in a turn on mode. The presented system was successfully applied to determine water in model commercial oil samples. It was shown that using herein proposed method the increase of water contents in the sample can be observed as increase of the emission intensity, despite the native fluorescence of the vegetable oil samples. For these samples, a good correlation with golden standard Karl Fischer titration was obtained.
dc.affiliationUniwersytet Warszawski
dc.contributor.authorMazur, Maciej
dc.contributor.authorRzepiński, Patryk
dc.contributor.authorCyrański, Michał
dc.contributor.authorMaksymiuk, Krzysztof
dc.contributor.authorKłucińska, Katarzyna
dc.contributor.authorMichalska-Maksymiuk, Agata
dc.date.accessioned2024-01-25T03:59:00Z
dc.date.available2024-01-25T03:59:00Z
dc.date.copyright2017-08-24
dc.date.issued2018
dc.description.accesstimeAT_PUBLICATION
dc.description.financeNie dotyczy
dc.description.number2
dc.description.versionFINAL_PUBLISHED
dc.description.volume11
dc.identifier.doi10.1007/S12161-017-1019-7
dc.identifier.issn1936-9751
dc.identifier.urihttps://repozytorium.uw.edu.pl//handle/item/109117
dc.languageeng
dc.pbn.affiliationchemical sciences
dc.relation.ispartofFood Analytical Methods
dc.relation.pages486 - 494
dc.rightsCC-BY
dc.sciencecloudnosend
dc.subject.enWater determination RET 4-Methylumbelliferone Sudan I Aliphatic solvents Fluorometry Vegetable oils
dc.titleImproving Fluorometric Determination of Water Content in Aprotic Solvents
dc.typeJournalArticle
dspace.entity.typePublication