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http://hdl.handle.net/10773/29868
Title: | Experimental evidence for a significant contribution of cellulose to indoor aerosol mass concentration |
Author: | Cerqueira, Mário Marques, Daniel Caseiro, Alexandre Pio, Casimiro |
Keywords: | Cellulose Indoor air Particulate matter Aerosol size distribution |
Issue Date: | 2010 |
Publisher: | Elsevier |
Abstract: | An apartment bedroom located in a residential area of Aveiro (Portugal) was selected with the aim of characterizing the cellulose content of indoor aerosol particles. Two sets of samples were taken: (1) PM10 collected simultaneously in indoor and outdoor air; (2) PM10 and PM2.5 collected simultaneously in indoor air. The aerosol particles were concentrated on quartz fibre filters with low-volume samplers equipped with size selective inlets. The filters were weighed and then extracted for cellulose analysis by an enzymatic method. The average indoor cellulose concentration was 1.01 ± 0.24 μg m−3, whereas the average outdoor cellulose concentration was 0.078 ± 0.047 μg m−3, accounting for 4.0% and 0.4%, respectively, of the PM10 mass. The corresponding average ratio between indoor and outdoor cellulose concentrations was 11.1 ± 4.9, indicating that cellulose particles were generated indoors, most likely due to the handling of cotton-made textiles as a result of routine daily activities in the bedroom. Indoor cellulose concentrations averaged 1.22 ± 0.53 μg m−3 in the aerosol coarse fraction (determined from the difference between PM10 and PM2.5 concentrations) and averaged 0.38 ± 0.13 μg m−3 in the aerosol fine fraction. The average ratio between the coarse and fine fractions of cellulose concentrations in the indoor air was 3.6 ± 2.1. This ratio is in line with the primary origin of this biopolymer. Results from this study provide the first experimental evidence in support of a significant contribution of cellulose to the mass of suspended particles in indoor air. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/29868 |
DOI: | 10.1016/j.atmosenv.2009.11.043 |
ISSN: | 1352-2310 |
Appears in Collections: | CESAM - Artigos DAO - Artigos |
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File | Description | Size | Format | |
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Cerqueira et al. - 2010 - Experimental evidence for a significant contributi.pdf | 267.82 kB | Adobe PDF |
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