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In-line application of electric field in capillary separation systems Part II: Separation parameters affecting the conductivity
Karlstads universitet, Fakulteten för teknik- och naturvetenskap, Avdelningen för kemi och biomedicinsk vetenskap.
Karlstads universitet, Fakulteten för teknik- och naturvetenskap.
Karlstads universitet, Fakulteten för teknik- och naturvetenskap, Avdelningen för kemi och biomedicinsk vetenskap.
2006 (engelsk)Manuskript (preprint) (Annet vitenskapelig)
sted, utgiver, år, opplag, sider
2006.
HSV kategori
Forskningsprogram
Kemi
Identifikatorer
URN: urn:nbn:se:kau:diva-1914OAI: oai:DiVA.org:kau-1914DiVA, id: diva2:5009
Tilgjengelig fra: 2007-10-08 Laget: 2007-10-08 Sist oppdatert: 2011-11-14bibliografisk kontrollert
Inngår i avhandling
1. In-line application of electric fields in capillary separation systems
Åpne denne publikasjonen i ny fane eller vindu >>In-line application of electric fields in capillary separation systems
2006 (Engelska)Doktoravhandling, med artikler (Annet vitenskapelig)
Abstract [en]

The magnitude of an electric field possible to apply in a capillary separation system is limited, because a high electric field causes a too high current through the capillary. Application of the electric field in-line will give an increased conductivity in the column, further increasing the risk of too high currents. The conductivity changes were found to result from an overall increase in ionic strength within the electric field. The increase in ionic strength is caused by the increase in mobile phase ions with electrophoretic velocity against the flow, together with OH- or H3O+ ions (depending on polarity) formed at the inlet electrode. Further it was found that the use of a pressurized reservoir or splitting of the flow at the inlet electrode could significantly limit the conductivity changes and thereby the maximum applicable electric field strengths could be increased.

sted, utgiver, år, opplag, sider
Fakulteten för teknik- och naturvetenskap, 2006
Serie
Karlstad University Studies, ISSN 1403-8099 ; 2006:55
Emneord
capillary separation, conductivity, in-line, electric field assisted liquid chromatography
HSV kategori
Forskningsprogram
Kemi
Identifikatorer
urn:nbn:se:kau:diva-1197 (URN)91-7063-086-0 (ISBN)
Disputas
2006-12-15, 9C203, Karlstad University, Karlstad, 10:15
Opponent
Veileder
Tilgjengelig fra: 2007-10-08 Laget: 2007-10-08

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