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Sci Total Environ

Title:		Evaluation of volatile organic compounds coupled to seasonality effects in indoor air from a commercial office in Madrid (Spain) applying chemometric techniques
Author(s):		Nunes CRO; Sanchez B; Gatts CEN; de Almeida CMS; Canela MC;
Address:		"GPQA - Grupos de Pesquisas em Quimica Ambiental, Laboratorio de Ciencias Quimicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brazil; Instituto Federal Fluminense - Campus Itaperuna, Itaperuna, Rio de Janeiro, Brazil. Electronic address: camila.r.nunes@iff.edu.br. FOTOAIR, Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas (CIEMAT), Madrid, Spain. Electronic address: benigno.sanchez@ciemat.es. Laboratorio de Ciencias Fisicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brazil. Electronic address: gatts@uenf.br. GPQA - Grupos de Pesquisas em Quimica Ambiental, Laboratorio de Ciencias Quimicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brazil. Electronic address: cmsa@uenf.br. GPQA - Grupos de Pesquisas em Quimica Ambiental, Laboratorio de Ciencias Quimicas, Universidade Estadual do Norte Fluminense Darcy Ribeiro (UENF), Campos dos Goytacazes, Rio de Janeiro, Brazil. Electronic address: mccanela@uenf.br"
Journal Title:		Sci Total Environ
Year:		2019
Volume:		20180908
Issue:		Pt 1
Page Number:		868 - 877
DOI:		10.1016/j.scitotenv.2018.09.095
ISSN/ISBN:		1879-1026 (Electronic) 0048-9697 (Linking)
Abstract:		"Volatile organic compounds (VOCs) concentrations depend on several sources and factors, such as temperature, ventilation, and humidity. Sources can be external atmospheric pollution or indoor release from furniture, coatings or occupants. In this context, this study focused on quantification of VOCs present in a confined atmosphere in a commercial office in downtown Madrid, Spain. The influence of seasonal changes in VOCs concentrations was evaluated using chemometric approaches. Indoor air was systematically monitored for one year using stainless steel tubes filled with Tenax(R) TA. Sampling was conducted one week a month, for three days during that week (Monday, Wednesday and Friday) for 60?ª+min, every 2?ª+h, totaling 24?ª+h, using an autosampler carousel. The analyses were performed using thermal desorption, and compounds were analyzed by a gas chromatograph coupled with a mass spectrometer. The correlation between these compounds and their concentrations, climatic variations, seasons, among others, were explained by multivariate statistics. Considering the current legislation in Spain, only benzene was present above the maximum permissible concentration (threshold value?ª+
Keywords:		Atmospheric pollutants Chemometrics Indoor air quality Pca VOCs;
Notes:		"PubMed-not-MEDLINENunes, Camila R de O Sanchez, Benigno Gatts, Carlos E N de Almeida, Cibele M S Canela, Maria C eng Netherlands 2018/10/13 Sci Total Environ. 2019 Feb 10; 650(Pt 1):868-877. doi: 10.1016/j.scitotenv.2018.09.095. Epub 2018 Sep 8"