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The retardation factor (R f), or retention factor, quantifies the results. It is the distance traveled by a given substance divided by the distance traveled by the mobile phase. [citation needed] Development of a TLC plate. Spots that appear purple separate into red spots and blue spots. In normal-phase TLC, the stationary phase is polar ...
Le Roux's research team assessed HPTLC for determining salbutamol serum levels in clinical trials and concluded that it is a suitable method for analyzing serum samples. [3] HPTLC has also been used successfully in the separation of various lipid subclasses, with reproducible and promising results obtained for 20 different lipid subclasses.
The impact factor relates to a specific time period; it is possible to calculate it for any desired period. For example, the JCR also includes a five-year impact factor, which is calculated by dividing the number of citations to the journal in a given year by the number of articles published in that journal in the previous five years. [14] [15]
This can be used to investigate notes or fibers left at the scene since each company's product is slightly different and those differences can be seen with TLC. The only limiting factor with TLC analysis is the necessity for the components to be soluble in whatever solution is used to carry the components up the analysis plate. [18]
It covers research on all aspects of chromatography. The current editors-in-chief was Teresa Kowalska [2] (University of Silesia in Katowice) and is Mieczyslaw Sajewicz (University of Silesia in Katowice). It was established in 1992 by the Institute of Chemistry at the University of Silesia in Katowice, and is gold open access.
Indexed by ISI the journal received an impact factor of 4.169 as reported in the 2014 Journal Citation Reports by Thomson Reuters, ranking it 15th out of 79 journals in the category "Biochemical Research Methods" [1] and ranking it sixth out of 74 journals in the category "Chemistry, analytical". [2]
The impact factor (IF) or journal impact factor (JIF) of an academic journal is a scientometric index calculated by Clarivate that reflects the yearly mean number of citations of articles published in the last two years in a given journal, as indexed by Clarivate's Web of Science.
The use of displacement chromatography is rather limited, and is mostly used for preparative chromatography. The basic principle is based on a molecule with a high affinity for the chromatography matrix (the displacer) which is used to compete effectively for binding sites, and thus displace all molecules with lesser affinities. [ 28 ]