Gas Chromatograph - Time-of-Flight Mass Spectrometer

A method for separating components by analyzing volatile components and utilizing differences in gas adsorption or distribution coefficients with respect to the stationary phase.

The gas chromatography time-of-flight mass spectrometer (GC-TOF MS) allows for the acquisition of precise mass information by using a time-of-flight mass spectrometer to detect components separated by GC. Compared to the integer mass information obtained from a typical quadrupole mass spectrometer, the accuracy of qualitative analysis is improved. Additionally, it is equipped with various ionization methods; the hard ionization method, EI, provides partial structural information, while the soft ionization method, FI, yields molecular weight information. By combining different ionization methods, the range of analytes that can be qualitatively analyzed is expanded. Furthermore, it is also possible to directly introduce samples into the ionization chamber, allowing for the evaluation of samples that are difficult to introduce via GC, such as thermally unstable substances and non-volatile compounds.

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