Gas chromatography/mass spectrometry (GC/MS)
The GC/MS-analysis links two different methods. First a gas chromatograph separates the components of the mixture and then they are identified by mass spectrometry. Thereby the two steps of separation and identification of compounds are combined in one analytic process.
The sample (mix of substances) is vaporized and reaches the column through/as a flow of carrier gas. The speed at which the different chemical substances move through the column depends on their polarity and boiling point and they are separated accordingly. Subsequently the substances are transferred along with the carrier gas to the mass spectrometer. There they are ionized and broken down to ions and other small fragments which are then used to identify the substances and to quantify them if possible.
(In cooperation with the University of Applied Sciences Merseburg.)
- samples can be undiluted or diluted; extraction products are possible to analyze
- usage of the headspace method is possible
- substances: gaseous, liquid, in solution; must be vaporizable at up to 400 °C
- analysis instruments: Trace GC (Thermo Scientific) and DSQ (Thermo Scientific)
- Determination of PAHs on the basis of AfPS GS 2014:01 PAK:
Testing and evaluation of polycyclic aromatic hydrocarbons (PAH) during the granting of the GS-label
Prof. Dr. Valentin Cepus
Telefon: +49 (0)3461 30889-51
- Identification of single components