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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
9-10
|
| pubmed:dateCreated |
1997-9-16
|
| pubmed:abstractText |
The effect of temperature on the retention and multiple separation of six estrogenic steroids in reversed-phase liquid chromatography has been studied. Capacity factors (k') of estriol, 17 beta-estradiol, 17 alpha-estradiol, d-equilenin, equilin and estrone were measured using mobile phase modified with different concentrations of beta-cyclodextrin (from 0-16 mM), a fixed solvent composition (acetonitrile-water) and a wide range of column temperatures (from 5 to 80 degrees C). The plots of capacity factors vs. reciprocal of absolute temperature are nonlinear in each case when mobile phase modified with beta-cyclodextrin was used. Particularly strong nonlinearity was observed at lower temperature and at higher beta-cyclodextrin concentration. The complex chromatograms were evaluated using optimization parameters such as capacity factor of the last-eluted peak (k'max), the smallest resolution between adjacent peaks (Rs,min) and relative resolution product (r). The results presented describe precisely the role of temperature in high-performance liquid chromatography systems in which mobile phases modified with cyclodextrin were used. Moreover, the elution order of estrogenic steroids on modified and unmodified mobile phases has been discussed.
|
| pubmed:language |
eng
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:month |
Jun
|
| pubmed:issn |
0731-7085
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
15
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
1281-7
|
| pubmed:dateRevised |
2004-11-17
|
| pubmed:meshHeading | |
| pubmed:year |
1997
|
| pubmed:articleTitle |
The influence of temperature on the multiple separation of estrogenic steroids using mobile phases modified with beta-cyclodextrin in high-performance liquid chromatography.
|
| pubmed:affiliation |
Medical University of Gdansk, Faculty of Pharmacy, Poland.
|
| pubmed:publicationType |
Journal Article
|