title: Sampling and monitoring of biogenic emissions by eucalyptus leaves using membrane extraction with sorbent interface (MESI).
abstract: Membrane extraction with sorbent interface (MESI) has been applied to monitor plant fragrance volatiles emitted into indoor air. The main components of the MESI system are a membrane module and a trap, which can be connected directly to a GC or GC-MS for simultaneous multicomponent extraction and monitoring. A polydimethylsiloxane (PDMS) membrane and two different traps, PDMS and Tenax, as well as a DC current supply for trap desorption have been applied in this research. After the membrane module is placed in contact with the plant, the MESI/GC-MS provides semicontinuous characterization of volatile compounds emitted. The MESI device has been applied to monitor the biogenic volatile organic compounds released during the first 8 h after a branch was cut from a Eucalyptus dunnii tree. The study demonstrates that the MESI system is a simple and useful tool for monitoring changes in emission processes as a function of time.
authors.affiliation: Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1.
authors.forename: Limei
authors.initials: L
authors.lastname: Wang
authors.forename: Heather
authors.initials: H
authors.lastname: Lord
authors.forename: Rick
authors.initials: R
authors.lastname: Morehead
authors.forename: Frank
authors.initials: F
authors.lastname: Dorman
authors.forename: Janusz
authors.initials: J
authors.lastname: Pawliszyn
mesh_terms: D002623:Chemistry Techniques, Analytical / Q000379:methods; D005052:Eucalyptus / Q000378:metabolism*; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods*; D008567:Membranes, Artificial; D009930:Organic Chemicals / Q000032:analysis* / Q000378:metabolism; D018515:Plant Leaves / Q000378:metabolism; D012680:Sensitivity and Specificity; D014835:Volatilization
chemical_list: D008567:Membranes, Artificial; D009930:Organic Chemicals