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dc.creatorTrtić-Petrović, Tatjana M.
dc.creatorDimitrijević, Aleksandra
dc.creatorZdolšek, Nikola
dc.creatorĐorđević, Jelena S.
dc.creatorTot, Aleksandar
dc.creatorVraneš, Milan
dc.creatorGadžurić, Slobodan
dc.date.accessioned2018-03-01T18:05:05Z
dc.date.available2018-03-01T18:05:05Z
dc.date.issued2018
dc.identifier.issn1618-2642
dc.identifier.issn1618-2650
dc.identifier.urihttps://vinar.vin.bg.ac.rs/handle/123456789/1891
dc.description.abstractIn this study, four hydrophilic ionic liquids (ILs) containing 1-alkyl-3-methylimidazolim cation and either salicylate or chloride anions were synthetized and studied as new task-specific ionic liquids (TSILs) suitable for aqueous biphasic system (ABS) formation and selective one-step extraction of copper(II). TSILs are designed so that the anion is responsible for forming the complex with metal(II) and preventing hydrolysis of metal cations at very strong alkaline pH, whereas the cation is responsible for selective extraction of metal(II)-salicylate complexes. It was found that 1-butyl-3-methylimidazolium salicylate could be used for selective extraction of Cu(II) in the presence of Zn(II), Cd(II), and Pb(II) at very alkaline solution without metal hydroxide formation. It was assumed that formation of metal(II)-salicylate complexes prevents the hydrolysis of the metal ions in alkaline solutions. The determined stability constants for Cu(II)-salicylate complexes, where salicylate was derived from different ionic liquids, indicated that there was no significant influence of the cation of the ionic liquid on the stability of the complexes. The ABS based on 1-butyl-3-methylimidazolium salicylate has been applied as the sample preparation step prior to voltammetric determination of Cu(II). The effect of volume of aqueous sample and IL and extraction time were investigated and optimum extraction conditions were determined. The obtained detection limits were 8 ng dm(-3). The optimized method was applied for the determination of Cu(II) in tap water, wastewater, and urine. The study indicated that application of the ABS based on 1-butyl-3-methylimidazolium salicylate ionic liquid could be successfully applied as the sample preparation method for the determination of Cu(II) from various environmental samples.en
dc.relationinfo:eu-repo/grantAgreement/MESTD/Integrated and Interdisciplinary Research (IIR or III)/45006/RS//
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172012/RS//
dc.rightsrestrictedAccessen
dc.sourceAnalytical and Bioanalytical Chemistryen
dc.subjectAqueous biphasic systemsen
dc.subjectCopper(II)en
dc.subjectExtractionen
dc.subjectTask-specific ionic liquidsen
dc.subjectSample preparationen
dc.titleNew sample preparation method based on task-specific ionic liquids for extraction and determination of copper in urine and wastewateren
dc.typearticleen
dc.rights.licenseARR
dcterms.abstractГадзуриц, Слободан; Тртић-Петровић Татјана; Тот, Aлександар; Димитријевић Aлександра; Вранес, Милан; Здолшек Никола; Ђорђевић Јелена С.;
dc.citation.volume410
dc.citation.issue1
dc.citation.spage155
dc.citation.epage166
dc.identifier.wos000419117600018
dc.identifier.doi10.1007/s00216-017-0705-z
dc.citation.rankM21
dc.identifier.pmid29098337
dc.type.versionpublishedVersion
dc.identifier.scopus2-s2.0-85032947197


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