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2006

Environmental Sciences

Agricultural and Biosystems Engineering Publications

SPME

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Characterization Of Volatile Organic Compounds And Odors By In-Vivo Sampling Of Beef Cattle Rumen Gas, By Solid-Phase Microextraction, And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Jeremiah Davis, Yin-Cheung Lo, Hongwei Xin Nov 2006

Characterization Of Volatile Organic Compounds And Odors By In-Vivo Sampling Of Beef Cattle Rumen Gas, By Solid-Phase Microextraction, And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Jeremiah Davis, Yin-Cheung Lo, Hongwei Xin

Agricultural and Biosystems Engineering Publications

Volatile organic compounds (VOCs) and odors in cattle rumen gas have been characterized by in-vivo headspace sampling by solid-phase microextraction (SPME) and analysis by gas chromatography–mass spectrometry–olfactometry (GC–MS–O). A novel device enabling headspace SPME (HS-SPME) sampling through a cannula was designed, refined, and used to collect rumen gas samples from steers. A Carboxen–polydimethylsiloxane (PDMS) fiber (85 μm) was used for SPME sampling. Fifty VOCs from ten chemical groups were identified in the rumen headspace. The VOCs identified had a wide range of molecular weight (MW) (34 to 184), boiling point (−63.3 to 292 °C ...


Characterization Of Volatile Organic Compounds And Odorants Associated With Swine Barn Particulate Matter Using Solid-Phase Microextraction And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Yin-Cheung Lo, Steven J. Hoff Jan 2006

Characterization Of Volatile Organic Compounds And Odorants Associated With Swine Barn Particulate Matter Using Solid-Phase Microextraction And Gas Chromatography–Mass Spectrometry–Olfactometry, Lingshuang Cai, Jacek A. Koziel, Yin-Cheung Lo, Steven J. Hoff

Agricultural and Biosystems Engineering Publications

Swine operations can affect air quality by emissions of odor, volatile organic compounds (VOCs) and other gases, and particulate matter (PM). Particulate matter has been proposed to be an important pathway for carrying odor. However, little is known about the odor–VOCs–PM interactions. In this research, continuous PM sampling was conducted simultaneously with three collocated TEOM 1400a analyzers inside a 1000-head swine finish barn located in central Iowa. Each TEOM was fitted with total suspended particulate (TSP), PM-10, PM-2.5 and PM-1 preseparators. Used filters were stored in 40 mL vials and transported to the laboratory. VOCs adsorbed/absorbed ...