Sökning: onr:"swepub:oai:DiVA.org:uu-94280" > Effect of alkali me...
Fältnamn | Indikatorer | Metadata |
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000 | 03419naa a2200397 4500 | |
001 | oai:DiVA.org:uu-94280 | |
003 | SwePub | |
008 | 060412s2006 | |||||||||||000 ||eng| | |
024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-942802 URI |
024 | 7 | a https://doi.org/10.1002/elps.2006002972 DOI |
040 | a (SwePub)uu | |
041 | a engb eng | |
042 | 9 SwePub | |
072 | 7 | a ref2 swepub-contenttype |
072 | 7 | a art2 swepub-publicationtype |
100 | 1 | a Hedeland, Ylvau Uppsala universitet,Avdelningen för analytisk farmaceutisk kemi4 aut0 (Swepub:uu)ylvcarls |
245 | 1 0 | a Effect of alkali metal hydroxides on the enantioseparation of amines using di-O-isopropylidene-keto-L-gulonic acid as the selector in NACE |
264 | 1 | b Wiley,c 2006 |
338 | a print2 rdacarrier | |
520 | a The present work demonstrates the importance of the ionic composition in the BGE for enantioseparation. (-)-2,3:4,6-di-O-Isopropylidene-2-keto-L-gulonic acid ((-)-DIKGA) has been used as the chiral selector in methanolic and ethanolic BGEs. The influence of added alkali metal hydroxides on the EOF and the chiral separation of amines; (atenolol, isoprenaline, pindolol and propranolol) have been studied. The ion-pair formation constants in ethanol were determined by precision conductometry for the enantiomers of pindolol with (-)-DIKGA, for Li+, Na+ and Cs+ with (-)-DIKGA, and also for the corresponding alkali metal hydroxides. The effective mobilities and the enantiomeric mobility differences were affected by the type of alkali metal hydroxide (LiOH, NaOH, KOH, RbOH or CsOH) added to the BGE. The effective mobility and mobility difference were increased with decrease in solvated radius of the alkali metal cation. These differences could partly be correlated to the ion-pair formation constants of the alkali metal cations with the chiral selector, affecting the equilibrium concentration of the free selector. The electroosmosis was also affected by the alkali metal hydroxide added to the BGE. The cathodic electroosmosis decreased with decreasing solvated radius of the alkali metal cation added to the BGE. Interestingly, the cathodic EOF was even reversed, i.e. became anodic in the ethanolic BGEs containing KOH, RbOH or CsOH and the methanolic ones with RbOH and CsOH. | |
650 | 7 | a MEDICIN OCH HÄLSOVETENSKAPx Medicinska och farmaceutiska grundvetenskaperx Farmaceutiska vetenskaper0 (SwePub)301012 hsv//swe |
650 | 7 | a MEDICAL AND HEALTH SCIENCESx Basic Medicinex Pharmaceutical Sciences0 (SwePub)301012 hsv//eng |
653 | a Alkali metal cation | |
653 | a Chiral separation | |
653 | a Electroosmosis | |
653 | a NACE | |
653 | a Precision conductometry | |
653 | a PHARMACY | |
653 | a FARMACI | |
700 | 1 | a Haglöf, Jakobu Uppsala universitet,Avdelningen för analytisk farmaceutisk kemi4 aut0 (Swepub:uu)japet367 |
700 | 1 | a Beronius, Peru Uppsala universitet,Avdelningen för analytisk farmaceutisk kemi4 aut0 (Swepub:uu)pbe26324 |
700 | 1 | a Pettersson, Curtu Uppsala universitet,Avdelningen för analytisk farmaceutisk kemi4 aut0 (Swepub:uu)curtps |
710 | 2 | a Uppsala universitetb Avdelningen för analytisk farmaceutisk kemi4 org |
773 | 0 | t Electrophoresisd : Wileyg 27:22, s. 4469-4479q 27:22<4469-4479x 0173-0835x 1522-2683 |
856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-94280 |
856 | 4 8 | u https://doi.org/10.1002/elps.200600297 |
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