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Sci Total Environ

Title:		Outdoor air monitoring: Performance evaluation of a gas sensor to assess episodic nuisance/odorous events using active multi-sorbent bed tube sampling coupled to TD-GC/MS analysis
Author(s):		Gallego E; Folch J; Teixidor P; Roca FJ; Perales JF;
Address:		"Laboratori del Centre de Medi Ambient, Escola Tecnica Superior d'Enginyeria Industrial de Barcelona (ETSEIB), Universitat Politecnica de Catalunya (LCMA-UPC), Avda. Diagonal, 647, E 08028 Barcelona, Spain. Electronic address: lcma.info@upc.edu. Laboratori del Centre de Medi Ambient, Escola Tecnica Superior d'Enginyeria Industrial de Barcelona (ETSEIB), Universitat Politecnica de Catalunya (LCMA-UPC), Avda. Diagonal, 647, E 08028 Barcelona, Spain. Centres Cientifics i Tecnologics, Universitat de Barcelona (CCiTUB), Lluis Sole Sabaris 1-3, E 08034 Barcelona, Spain. Electronic address: teixidor@ccit.ub.edu"
Journal Title:		Sci Total Environ
Year:		2019
Volume:		20190803
Issue:
Page Number:		133752 -
DOI:		10.1016/j.scitotenv.2019.133752
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"In order to evaluate the performance of a commercially available metal oxide semiconductor gas sensor (TGS 2602, Figaro Engineering Inc.) for activating a monitoring system when a nuisance/odorous pollution episode of volatile organic compounds (VOCs) occur, a widely used active sampling methodology based on multi-sorbent bed tubes (Carbotrap, Carbopack X and Carboxen 569) and analysis through automatic thermal desorption-gas chromatography/mass spectrometry was used. Daily 24?ª+h samples of multi-sorbent bed tubes were taken over a period of 14?ª+days using an air collector pump sampler specially designed in the LCMA-UPC laboratory. Simultaneously, daily episodic samples were taken according to the activation of another LCMA-UPC sampler by the metal oxide semiconductor gas sensor. Sampling was done throughout January-February 2019 at El Morell (Tarragona, Spain), near the petrochemical area. All episode samples present higher concentrations of VOCs than 24?ª+h samples, with an average ratio of 3.5 times for Total VOCs. VOC familial distributions present very similar values in 24?ª+h and episode samples (r(2)?ª+=?ª+0.7466), correlating significatively (F-Snedecor, p?ª+
Keywords:		Active sampling Gas sensor Outdoor air quality Td-gc/ms Volatile organic compounds;
Notes:		"PubMed-not-MEDLINEGallego, Eva Folch, Jaume Teixidor, Pilar Roca, Francisco Javier Perales, Jose Francisco eng Netherlands 2019/08/12 Sci Total Environ. 2019 Dec 1; 694:133752. doi: 10.1016/j.scitotenv.2019.133752. Epub 2019 Aug 3"