Analysis by desorption of volatile impurities from an ionic liquid solution in an unmodified gas chromatograph inlet.
A procedure for using ionic liquids to determine volatile impurities in compounds or matrices that are soluble in an ionic liquid is described. Using a conventional autosampler a droplet of ionic liquid solution is suspended in the inlet of the gas chromatograph and analytes are desorbed onto a GC column using splitless injection conditions. Results are presented for 1,2-propanediol, nonane, N,N-dimethylacetamide, and mesitylene in two different compounds in the ionic liquids trihexyltetradecylphosphonium bis(trifluoromethylsulfonyl)imide and trihexyltetradecylphosphonium dicyanamide.
Von Wald
Grant
G
The Dow Chemical Company, Analytical Sciences, 1897 Building, Midland, MI 48667, USA. gvwald@dow.com
Albers
David
D
McCabe
Terry
T
D000081:Acetamides / Q000032:analysis; D000473:Alkanes / Q000032:analysis; D001555:Benzene Derivatives / Q000032:analysis; D002849:Chromatography, Gas / Q000295:instrumentation / Q000379:methods*; D004866:Equipment Contamination; D052578:Ionic Liquids / Q000737:chemistry*; D019946:Propylene Glycol / Q000032:analysis; D015203:Reproducibility of Results; D055549:Volatile Organic Compounds / Q000032:analysis*
D000081:Acetamides; D000473:Alkanes; D001555:Benzene Derivatives; D052578:Ionic Liquids; D055549:Volatile Organic Compounds; D019946:Propylene Glycol; C010219:mesitylene; C013959:dimethylacetamide; C017573:nonane