Novel techniques for enhancing sensitivity in static headspace extraction-gas chromatography

Development of a quantitative method for headspace analysis of methylsulfanyl-volatiles from kiwifruit tissue

“…This is caused by changes of phase boundary properties between sample and matrix leading to a general reduction in solubility of hydrophobic compounds in the aqueous phase (Cheong et al, 2010;Yang & Peppard, 1994). Also important is the effect of sampling temperature on the extraction yield of headspace volatiles, since the vapor pressure generally increases with temperature, resulting in decreased partition coefficients for most compounds (Snow & Bullock, 2010). In order to define the most sensitive conditions, the effect of four inorganic salts (NaCl, MgSO 4 , CaCl 2 , (NH 4 ) 2 SO 4 ) on MeS-volatiles from 'Hort16A' fruit pulp was investigated at different extraction temperatures (20, 40, 60, 80°C) using HS-SPME.…”

Volatile sampling by headspace techniques

“…The use of other novel solvents, such as room-temperature ionic liquids (RTILs), and different emerging HCC-HS techniques and sample-preparation procedures as a way to enhance S-HS sensitivity were recently reviewed by Snow and Bullock [9], so we compile here only the most significant developments regarding the use of these solvents published since that date.…”

Resolution enhancement of field asymmetric waveform ion mobility spectrometry (FAIMS) by ion focusing

“…Gas Chromatography and Mass Spectrometry are the most commonly applied technologies in the VOCs detection [2,3]. Traditional Gas Chromatography achieved VOCs detection at ppm level with the separation time of ten minutes level [4]. Multidimensional Gas Chromatography improves the separation capacity of complex VOCs but the separation time is a bit longer [5].…”