کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1170424 | 1491173 | 2007 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
On the measurement of consistent long-term retention factor values in micellar liquid chromatography
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
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چکیده انگلیسی
In the field of the quantitative structure-retention and retention-activity relationships (QRAR and QSRR) is crucial to obtain consistent retention factors (k). For this purpose, two unbiased approaches to estimate k are used: (i) the IUPAC approach (based on the extra-column time correction) and (ii) the '2-references' approach (based on the k estimation respect to two prefixed reference k values). Three reference chemicals were selected attending to their retention time, chemical stability and non-ionic character. Consistent retention factor values for these references were estimated for C18 chromatographic columns and Brij35 solutions as mobile phases after statistical analysis. The comparison between the k values estimated for a set of 65 test chemicals using the IUPAC and the '2-references' approach shows that the last one gives consistent long-term values useful for QRAR and QSRR modelling purposes.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Analytica Chimica Acta - Volume 595, Issues 1â2, 9 July 2007, Pages 19-27
Journal: Analytica Chimica Acta - Volume 595, Issues 1â2, 9 July 2007, Pages 19-27
نویسندگان
José MarÃa Bermúdez-Saldaña, Laura Escuder-Gilabert, Rosa MarÃa Villanueva-Camañas, MarÃa José Medina-Hernández, Salvador Sagrado,