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Odors are a common occurrence at wastewater treatment plants, biosolids processing facilities, and biosolids recycling locations. Accurate, objective measurement techniques are needed to monitor emissions, to develop new waste handling procedures and to reduce the production of the volatile gases.The objective of this study was to evaluate the use of solid phase microextraction for measuring common odorants that are found in biosolids facilities. The odorants were collected and concentrated by solid phase microextraction (SPME) and then quantified by gas chromatography with detection by mass spectrometry. A 75-μm Carboxen-Polydimethylsiloxane coating was used for the analysis of trimethylamine, dimethyl sulfide, dimethyl disulfide and methyl mercaptan. Gaseous standards were generated for individual compounds and for dry and wet mixture from permeation apparatus. The differences found in sensitivity between fibers, the competition for the active sites on the fiber and the production of artifacts make SPME well suited for qualitative analysis and enables quick screening for the identification of compounds with adverse organoleptic characteristics.
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Document Type: Research Article

Publication date: 2004-01-01

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