Evaluation of the specificity of the stationary phase in gas chromatography

✍ Scribed by N. Dimov; M. Muchtarova

• Book ID: 104146813
• Publisher: Elsevier Science
• Year: 1974
• Tongue: English
• Weight: 429 KB
• Volume: 91
• Category: Article
• ISSN: 1873-3778
• DOI: 10.1016/s0021-9673(01)97889-6

✦ Synopsis

It was empirically established previously that the relation y2/y1 in the basic equation of gas chromatography could be substituted in some cases by Vmol / VmO, . Difliculties in the calculation of ~~~~~ have been overcome, as the new equafion ' r1.2 = P:-Vnlolz P': -V"lOl1

involves only physicochemical parameters of the solutes. The relation r;xz/rc,lll,c is used as a measure of the specificity of phases which is related to hydrogen donding or structure, but not of that due to differences in Vmal. These properties of the phase could be evaluated by means of suitable standard solutes.

The specificity of some phases for n-paraffins, aromatic hydrocarbons and chlorinated hydrocarbons, and its application to some simple calculations are discussed.