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Partial molar volumes of glycine and dl-alanine in aqueous ammonium sulfate solutions at 278.15, 288.15, 298.15 and 308.15 K

2014Journal article Restricted access
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dc.contributor.authorMartins, Mónia A.R.
dc.contributor.authorFerreira, Olga
dc.contributor.authorHnědkovský, Lubomír
dc.contributor.authorCibulka, Ivan
dc.contributor.authorPinho, Simão
dc.date.accessioned2016-10-12T10:35:57Z
dc.date.available2016-10-12T10:35:57Z
dc.date.issued2014
dc.description.abstractIn this work, the partial molar volumes of glycine and DL-alanine in aqueous solutions of ammonium sulfate at 0.0, 0.1, 0.3, 0.7, and 1.0 mol.kg(-1) are determined between 278.15 and 308.15 K. Transfer volumes were obtained, which are larger for glycine than DL-alanine. On the contrary, the hydration numbers are higher for DL-alanine than glycine, and dehydration of the amino acids is observed with increasing temperature or salt molality. The data suggest that interactions between ion and charged/hydrophilic groups are predominant and, by applying the methodology proposed by Friedman and Krishnan, it was concluded that they are mainly pairwise. A group-contribution scheme has been successfully applied to the pairwise volumetric interaction coefficient. Finally, the dehydration effect on glycine, alanine and serine in the presence of different electrolytes has been rationalized in terms of the charge density and a parameter accounting for the cation's hydration.pt_PT
dc.description.sponsorshipThis work is supported by project Project PEst-C/EQB/LA0020/2013, financed by FEDER through COMPETE—Programa Operacional Factores de Competitividade and by FCT—Fundação para a Cieˆncia e a Tecnologia. This work was also co-financed by QREN, ON2 and FEDER (Project NORTE-07-0162-FEDER-000050). The stay of M.A.R. Martins at ICT Prague was arranged within the ERASMUS Program.pt_PT
dc.identifier.citationMartins, Mónia A.R.; Ferreira, Olga; Hnědkovský, Lubomír; Cibulka, Ivan; Pinho, Simão (2014). Partial molar volumes of glycine and dl-alanine in aqueous ammonium sulfate solutions at 278.15, 288.15, 298.15 and 308.15 K. Journal of Solution Chemistry. ISSN 0095-9782. 43:5, p.972-988pt_PT
dc.identifier.doi10.1007/s10953-014-0172-5pt_PT
dc.identifier.issn0095-9782
dc.identifier.urihttp://hdl.handle.net/10198/13398
dc.language.isoengpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectPartial molar volumept_PT
dc.subjectHydrationpt_PT
dc.subjectGroup-contributionpt_PT
dc.subjectCharge densitypt_PT
dc.subjectAlaninept_PT
dc.subjectGlycinept_PT
dc.titlePartial molar volumes of glycine and dl-alanine in aqueous ammonium sulfate solutions at 278.15, 288.15, 298.15 and 308.15 Kpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/COMPETE/PEst-C%2FEQB%2FLA0020%2F2013/PT
oaire.citation.endPage988pt_PT
oaire.citation.issue5pt_PT
oaire.citation.startPage972pt_PT
oaire.citation.titleJournal of Solution Chemistrypt_PT
oaire.citation.volume43pt_PT
oaire.fundingStreamCOMPETE
person.familyNameFerreira
person.familyNamePinho
person.givenNameOlga
person.givenNameSimão
person.identifier810882
person.identifier.ciencia-id9F1D-C75A-4A54
person.identifier.ciencia-id481D-73AD-8D0F
person.identifier.orcid0000-0001-8414-3479
person.identifier.orcid0000-0002-9211-857X
person.identifier.ridM-4567-2013
person.identifier.ridD-4148-2013
person.identifier.scopus-author-id57203083219
person.identifier.scopus-author-id7003570175
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublication59e0c608-0c21-4191-af5e-529d21970399
relation.isAuthorOfPublication8ef7789a-34f3-4915-a666-4efe26272a30
relation.isAuthorOfPublication.latestForDiscovery59e0c608-0c21-4191-af5e-529d21970399
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