11013727

Source:http://linkedlifedata.com/resource/pubmed/id/11013727

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Predicate	Object
rdf:type	pubmed:Citation
lifeskim:mentions	umls-concept:C0441635, umls-concept:C0678536, umls-concept:C1185738, umls-concept:C1280500, umls-concept:C1721071
pubmed:issue	15
pubmed:dateCreated	2000-11-15
pubmed:abstractText	Columns in capillary electrochromatography (CEC) most commonly have the detection window located immediately after the retaining frit of the packed segment. Here, the properties of "duplex" columns having a predetection open segment between the frit and the detector window are examined with particular regard to the effect of the relative lengths of the packed and open segments on the separation of mixtures containing neutral and charged components. This configuration allows the use of columns with short packed segments in contemporary instruments for rapid separations. It is shown that, by varying the length of the packed segment, the balance of chromatographic and electrophoretic forces can be shifted, and the selectivity can be adjusted if the separation involves the interplay of both mechanisms. Expressions are presented for estimating the retention time in a duplex column if the chromatographic and electrophoretic properties of the sample components are known. The results are expected to facilitate CEC method development in selection of the respective column segment lengths for optimum separation.
pubmed:grant	http://linkedlifedata.com/resource/pubmed/grant/GM 20993
pubmed:language	eng
pubmed:journal	http://linkedlifedata.com/resource/pubmed/journal/0370536
pubmed:citationSubset	IM
pubmed:status	MEDLINE
pubmed:month	Aug
pubmed:issn	0003-2700
pubmed:author	pubmed-author:HorváthCC, pubmed-author:RathoreA SAS
pubmed:issnType	Print
pubmed:day	1
pubmed:volume	70
pubmed:owner	NLM
pubmed:authorsComplete	Y
pubmed:pagination	3271-4
pubmed:dateRevised	2007-11-14
pubmed:meshHeading	pubmed-meshheading:11013727-Chromatography, Liquid, pubmed-meshheading:11013727-Electrophoresis, Capillary
pubmed:year	1998
pubmed:articleTitle	Effect of a predetection open segment in the column on speed and selectivity in capillary electrochromatography.
pubmed:affiliation	Department of Chemical Engineering, Yale University, New Haven, Connecticut 06520-8286, USA.
pubmed:publicationType	Journal Article, Research Support, U.S. Gov't, P.H.S., Research Support, Non-U.S. Gov't