Gas chromatography coupled with mass spectrometry GC-MS

The GC-MS is one of the most high-performance devices in modern instrumental analysis.

The enormous separating capacity of the gas chromatography system is exploited for the determination of individual compounds in complex mixtures.

The mass spectrometer is an extremely sensitive and specific detection system. Organic compounds generate so-called mass spectra in the MS.

Comparison with a mass spectral library allows identification of the compounds. The NIST 98 library is used.

With over 130,000 entries, this is the most extensive and widely-used library for electron-ionization (EI) mass spectra.