Dynamic air sampling of volatile organic compounds using solid phase microextraction.
A new dynamic air sampling system was devised and evaluated in conjunction with solid phase microextraction (SPME) fiber materials for extracting odor-causing volatile organic compounds (VOCs) present in swine building environments. Utilizing a standard solution consisting of 11 compounds (i.e., volatile fatty acids, indoles, and phenol), sampling times, volumes, and flow rates were adjusted to establish optimal extraction conditions. Results indicated that the sampling system was effective with the Carboxen/Polydimethylsiloxane (CAR/PDMS) fiber in extracting all 11 standard compounds. The best sampling conditions for the extraction were a 100-mL sampling vial subjected to a continuous flow of 100 mL/min for 60 min. The gas chromatographic analysis showed that the reproducibility was within acceptable ranges for all compounds (RSD=4.24-17.26% by peak areas). In addition, field tests revealed that the sampling system was capable of detecting over 60 VOCs in a swine house whose major components were identified by gas chromatography-mass spectrometry (GC-MS) and by their retention times as volatile fatty acids, phenols, indole, and skatole. The field tests also showed that considerably different levels of VOCs were present in various parts of the swine building.
Razote
Edna
E
Department of Biological and Agricultural Engineering, Kansas State University, Manhattan 66506, USA. era5555@ksu.edu
Jeon
Ike
I
Maghirang
Ronaldo
R
Chobpattana
Wannee
W
D000393:Air Pollutants / Q000032:analysis*; D000818:Animals; D004784:Environmental Monitoring / Q000379:methods; D008401:Gas Chromatography-Mass Spectrometry / Q000379:methods; D006799:Housing, Animal; D009812:Odorants / Q000032:analysis*; D009930:Organic Chemicals / Q000032:analysis*; D015203:Reproducibility of Results; D013552:Swine; D014835:Volatilization
D000393:Air Pollutants; D009930:Organic Chemicals