dc.creator | Silva, Luis Henrique M. da | |
dc.creator | Silva, Maria C. Hespanhol da | |
dc.creator | Aquino, Roney A. N. de | |
dc.creator | Francisco, Kelly R. | |
dc.creator | Cardoso, Marcus V. C. | |
dc.creator | Minim, Luis A. | |
dc.creator | Coimbra, Jane S. R. | |
dc.date | 2017-11-17T11:27:14Z | |
dc.date | 2017-11-17T11:27:14Z | |
dc.date | 2006-10-25 | |
dc.date.accessioned | 2023-09-27T20:49:12Z | |
dc.date.available | 2023-09-27T20:49:12Z | |
dc.identifier | 00027863 | |
dc.identifier | https://www.ncbi.nlm.nih.gov/pubmed/17107209 | |
dc.identifier | http://www.locus.ufv.br/handle/123456789/13187 | |
dc.identifier.uri | https://repositorioslatinoamericanos.uchile.cl/handle/2250/8948674 | |
dc.description | O DOI redireciona para uma pagina de erro. | |
dc.description | Ions 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.format | pdf | |
dc.format | application/pdf | |
dc.language | eng | |
dc.publisher | American Chemical Society | |
dc.relation | 110(46), p. 23540-23546, Nov. 2006 | |
dc.rights | Open Access | |
dc.subject | Nitroprusside-PEO | |
dc.subject | Ethylene oxide | |
dc.title | Nitroprusside-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.type | Artigo | |