Development of a Precise Method for the Quantitative Analysis of Hydrocarbons Using Post−Column Reaction Capillary Gas Chromatography with Flame Ionization Detection

Gas chromatographs equipped with flame ionization detectors (GC/FID) are widely used for the quantitative analysis of hydrocarbon compounds. For precise quantitative analysis, it is essential to calibrate the GC/FID system using calibration standards for each analyte. This is both inefficient and cost−prohibitive. The response factor method is also used for calibration of the GC/FID. The response factor is determined by the analysis of standard materials or other methods prior to measurement of the analytes. It is known that the FID response for hydrocarbons is generally proportional to the carbon number of the analyte. When the large number of hydrocarbons needs to be analyzed, for example fuel or oil in petroleum field, the response factor is determined by using the carbon number, then used for calibration of the GC/FID. Unfortunately, the response of the FID is not exactly proportional to the carbon number but is influenced by the functional groups of the analytes, the structure of the hydrocarbons, and the operating conditions of the FID. For these reasons, if a complex mixture is calibrated by Original