Study on Gas Chromatographic Separation on the Basis of the Results of Interlaboratory Comparison Examination and Proficiency Testing for Determination of Dioxins

In the analysis of dioxins (PCDDs, PCDFs and DL-PCBs) whose isomers in total are more than 400 using gas chromatography-mass spectrometry, it is essential to design a suitable gas chromatographic condition to separate the peaks to be measured from other peaks. For this purpose, the literature was surveyed at first to know the separation ability of recent liquid phases for gas chromatographic columns, followed by characterization of experimental data obtained from three interlaboratory testings. A statistical calculation was applied to the results mentioned above to distinguish the separated peaks from the overlapped ones. Confident results were obtained after rejecting data of the overlapped peaks.