dear
Its volatility makes it a good solvent.
Due to this property is can be easily separated out from the extracts.
Carbondisulphide is recommended as desorption solvent for the analysis of non-polar compounds like benzene or toluene, adsorbed at active charcoal, followed by gaschromatographic analysis.
You need carbondisulphide of chromatographic quality. Care must be taken to avoid volatilization, and extraction must be done in a fume hood for safety reasons. Check MSDS for CS2 before using it.
Methods are described for instance in EN 14662-2:2005: Ambient air quality - Standard method for measurement of benzene concentrations - Part 2: Pumped sampling followed by solvent desorption and gas chromatography.
The main property of carbon disulphide that makes it a useful GC solvent is that it is almost not detected by the FID which only responds to compounds containing a carbon-hydrogen bond. This there is no solvent peak on the GC-FID trace to interfere with early eluting compounds.
Carbon disulphide has a very high desorption efficiency. In addition, it has low sensitivity to FID hence its wide use as an extraction solvent for many organic substances adsorbed to activated carbon
Carbon disulfide is an excellent solvent for dissolving waxes (C24+ hydrocarbons) for GC/FID and GC/MS analysis.
Does CS2 dissolve different sulfur species including polysulfides?
- Badges
- Science method
- Similar topics
- Chemistry
- General Biochemistry
- Biochemical Techniques
- Analytical Chemistry