A universal temperature controlled membrane interface for the analysis of volatile and semi-volatile organic compounds.
A universal temperature controlled membrane interface (TCMI) has been constructed for hollow-fibre membranes. The membrane temperature is controllable in the range -70 to 250 degrees C using an electric heater and a flow of cooled nitrogen or helium gas. Volatile and semi-volatile organic compounds may be detected either by continuous diffusion across the membrane or by in-membrane pre-concentration followed by thermal desorption into the detector. The TCMI interface is demonstrated in combination with mass spectrometry and GC-MS, for the determination of VOCs and SVOCs in aqueous and air samples and for the on-line monitoring of a bioreactor.
Creaser
Colin S
CS
School of Science, Nottingham Trent University, Clifton Lane, Nottingham, UK NG11 8NS. colin.creaser@ntu.ac.uk
Lamarca
David Gómez
DG
dos Santos
Luisa M Freitas
LM
New
Anthony P
AP
James
Phillip A
PA
D017022:Flow Injection Analysis / Q000295:instrumentation* / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D008567:Membranes, Artificial; D009930:Organic Chemicals / Q000032:analysis*; D013696:Temperature
D008567:Membranes, Artificial; D009930:Organic Chemicals