Étude des paramètres de la chromatographie en phase gazeuse realisée en couplant un gradient longitudinal et une programmation de température

Abstract

Study of gas chromatographic parameters obtained by coupling a longitudinal temperature gradient with a linear temperature programmation Gas chromatography with a longitudinal temperature gradient can be coupled with a linear temperature programmation. By this method retention times may be calculated by means of graphical determination, using the following four parameters: value of temperature gradient, rate of temperature elevation, column length, and inlet temperature at the time of injection. The role of these four parameters in the determination of retention time is defined. By introducing several parameters the method provides more versatility and reduces the time of analysis when compared with other methods, viz. isothermal, linear temperature programmation, and longitudinal temperature gradient used alone.