期刊
BUILDING AND ENVIRONMENT
卷 99, 期 -, 页码 200-209出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.buildenv.2015.12.017
关键词
Field and laboratory emission cell (FLEC); Proton transfer reaction-mass spectrometer (PTR-MS); Sorption; VOCs; Building materials
资金
- French Environment and Energy Management Agency ADEME (Agence De l'Environment et de la Maitrise de I'Energie)
Several physicochemical processes occurring within buildings are key drivers of indoor concentrations of Volatile Organic Compounds VOCs. Many models and experimental studies have been proposed to predict VOCs concentration indoors given these processes. However, there is a lack of representative data in literature to present gas surface interaction in order to validate mathematical models. This work is divided in two parts and aims to develop and validate a method to perform fast measurements of VOC sorption parameters on the field by coupling a Field and Laboratory Emission Cell (FLEC) to a Proton Transfer Reaction-Mass Spectrometer (PTR-MS). In the part 1 of the work, sorption coefficients of aromatic compounds on a gypsum board and vinyl flooring were investigated at ppb levels to test and evaluate the proposed methodology. Sorption coefficients in the range of 0.03-1.88 mh(-1) for k(a) and 2.04 -17.32 h(-1) for k(d) were successfully measured within a (0.5-8 h) for the two materials. Robustness tests highlight that the determination of sorption coefficients does not depend on operating conditions. While sorption coefficients for the gypsum board were measured with a PIR-MS time resolution of 20 s, the vinyl flooring material required measurements at a higher time resolution of 2 s due to its lower sorption properties. Limits of applicability assessed for this method indicate that sets of sorption parameters (k(a), k(d)) of (0.01 m h(-1); 0.01 h(-1)) and (0.09 m h(-1); 0.09 h(-1)) can be measured with an accuracy better than 10% at time resolutions of 2 and 20 s respectively. (C) 2016 Elsevier Ltd. All rights reserved.
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