This year Shimadzu launched two revolutionary systems for two-dimensional gas chromatography in routine analysis: the MDGC-2010 and the Comprehensive GCMS system. In the MDGC-2010 compounds that could not be separated in the first chromatographic system are transferred to a second capillary column with a different separation mechanism. In contrast to traditional “heart-cut” systems it allows several cuts without showing any shifts of retention times. The user only needs to run one chromatogram to fix all the cut times. The MDGC-2010 system is controlled by the specially developed, easy to use MDGCsolution software.
In Comprehensive GCMS two capillary columns with different separation mechanisms are coupled to each other. After separation in the first dimension the compounds are cry-focused in a thermal modulator and injected into the second dimension via short heating pulses. With this technique a high chromatographic resolution can be achieved which is not possible in on-dimensional systems. Combining Comprehensive GC with the fastest Quadrupole Mass spectrometer (50Hz) for the first time allows a reliable quantitative analysis of the very narrow peaks obtained in Comprehensive GC.
The robust hardware and specially designed software make these techniques for the first time a valuable tool also for routine analysis.
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