Sampling and monitoring of biogenic emissions by eucalyptus leaves using membrane extraction with sorbent interface (MESI).
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.
Wang
Limei
L
Department of Chemistry, University of Waterloo, Waterloo, Ontario, Canada N2L 3G1.
Lord
Heather
H
Morehead
Rick
R
Dorman
Frank
F
Pawliszyn
Janusz
J
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
D008567:Membranes, Artificial; D009930:Organic Chemicals