dc.creatorSilva, Luis Henrique M. da
dc.creatorSilva, Maria C. Hespanhol da
dc.creatorAquino, Roney A. N. de
dc.creatorFrancisco, Kelly R.
dc.creatorCardoso, Marcus V. C.
dc.creatorMinim, Luis A.
dc.creatorCoimbra, Jane S. R.
dc.date2017-11-17T11:27:14Z
dc.date2017-11-17T11:27:14Z
dc.date2006-10-25
dc.date.accessioned2023-09-27T20:49:12Z
dc.date.available2023-09-27T20:49:12Z
dc.identifier00027863
dc.identifierhttps://www.ncbi.nlm.nih.gov/pubmed/17107209
dc.identifierhttp://www.locus.ufv.br/handle/123456789/13187
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8948674
dc.descriptionO DOI redireciona para uma pagina de erro.
dc.descriptionIons are known to concentrate in the salt-enriched phase of aqueous two-phase systems, with the only known exception being the pertechnetate anion, TcO(4)(-). We have discovered a second ion, nitroprusside anion (NP), which is markedly transferred from the salt phase to the polymer phase. The partitioning behavior of [Fe(CN)(5)NO](2-) anion was investigated in ATPS formed by poly(ethylene oxide) of molar mass 3350 and 35000 g mol(-1), and different sulfate salts (Na(2)SO(4), Li(2)SO(4), and MgSO(4)). On the basis of a model, the nitroprusside high affinity for the macromolecular phase was attributed to an enthalpic specific interaction between the anion and ethylene oxide unit. Partition coefficients increased exponentially with tie-line length increase, reaching values as high as 1000 and showing a relationship very dependent on the salt nature, but independent of the polymer molar mass.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherAmerican Chemical Society
dc.relation110(46), p. 23540-23546, Nov. 2006
dc.rightsOpen Access
dc.subjectNitroprusside-PEO
dc.subjectEthylene oxide
dc.titleNitroprusside-PEO enthalpic interaction as a driving force for partitioning of the [Fe(CN) 5 NO] 2- anion in aqueous two-phase systems formed by poly (ethylene oxide) and sulfate salts
dc.typeArtigo


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