Computerized Rapid Analysis of Complex Mixtures by Gas Chromatography

Abstract

A computerized rapid analysis system and its application to two research problems are described. The system uses one central minicomputer to gather analog and digital data from several instruments. Various programs calibrate and convert the data into formatted reports. If desired, this computer sends the report to a more powerful mainframe computer for comparison of different reports and establishment of a data base. Data interpretation begins when a calibration program accesses an external standard file, identifies peaks, calculates response factors for each peak, and stores the results on disk. A master program produces a quantitative report based on retention times and two relative retention time index systems. This report is transferred by modem to a mainframe computer. Statistical programs on the mainframe computer compare runs and/or reprint the data in another format. Additional programming allows for the addition and correction of peak names. The entire procedure produces reports rapidly, allows for variable formats, and compares data from multiple runs. The applicability of the system in studying fluid degradation and solvent extraction efficiency is demonstrated.