Gas-phase analysis of trimethylamine, propionic and butyric acids, and sulfur compounds using solid-phase microextraction

Analytical Chemistry
Hyunook KimLaura L McConnell

Abstract

Complaints due to odors are an important problem for the wastewater, composting, and animal agriculture industries. Accurate, objective measurement techniques are needed to monitor emissions, to develop new waste handling procedures, and to reduce the production of these volatile gases. Solid-phase microextraction was investigated as a technique for the determination of representative odorous gases. A flow-through Teflon chamber was used to expose the fibers to certified gas standards. A 75-microm carboxen-poly(dimethylsiloxane) (Car-PDMS) coating was used for trimethylamine (TMA), carbon disulfide (CS2), dimethylsulfide (DMS), and dimethyl disulfide (DMDS), and an 85-microm polyacrylate coating was used for propionic acid (PA) and butyric acid (BA). Using a 1-h fiber exposure time and a flow rate through the chamber of 72 mL/min, method detection limits were 2.38, 0.074, 0.150, 0.063, 1.85, and 1.32 ppbv for TMA, DMS, CS2, DMDS, PA, and BA, respectively. Enhanced detector signal was observed for all analytes under flow conditions, as compared to static conditions, and the porous nature of the Car-PDMS coating appears to increase the time needed for analytes to reach equilibrium under flow conditions.

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Citations

Jan 25, 2005·Journal of Environmental Science and Health. Part A, Toxic/hazardous Substances & Environmental Engineering·Hyunook KimChristopher Peot
Jul 18, 2009·Analytical Sciences : the International Journal of the Japan Society for Analytical Chemistry·Mir Ali FarajzadehAbolghasem Jouyban
Dec 9, 2015·Journal of Chromatography. a·Aku HelinMarja-Liisa Riekkola
Jul 19, 2005·Water Research·Jae-Soo ChangSteven K Dentel
Jun 14, 2016·International Journal of Phytoremediation·Phattara BoraphechPaitip Thiravetyan
Oct 7, 2004·Rapid Communications in Mass Spectrometry : RCM·Douglas J MorrisonTom Preston
Jan 17, 2009·Water Environment Research : a Research Publication of the Water Environment Federation·Kweku SekyiamahMark Ramirez
Jun 12, 2009·Journal of Agricultural and Food Chemistry·Neslihan AkdenizD Raj Raman

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