Comparison of indoor and outdoor concentrations of CO at a public school. Evaluation of an indoor air quality model

Chaloulakou, A; Mavroidis, I

dc.contributor.author	Chaloulakou, A	en
dc.contributor.author	Mavroidis, I	en
dc.date.accessioned	2014-03-01T01:17:39Z
dc.date.available	2014-03-01T01:17:39Z
dc.date.issued	2002	en
dc.identifier.issn	1352-2310	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/14597
dc.subject	Air exchange rate	en
dc.subject	Carbon monoxide diurnal cycle	en
dc.subject	Exposure	en
dc.subject	Indoor air pollution	en
dc.subject	Sensitive population subgroup	en
dc.subject.classification	Environmental Sciences	en
dc.subject.classification	Meteorology & Atmospheric Sciences	en
dc.subject.other	Air pollution	en
dc.subject.other	Air quality	en
dc.subject.other	Attenuation	en
dc.subject.other	Regression analysis	en
dc.subject.other	Seasonal variation	en
dc.subject.other	Carbon monoxide	en
dc.subject.other	carbon monoxide	en
dc.subject.other	air quality	en
dc.subject.other	carbon monoxide	en
dc.subject.other	child health	en
dc.subject.other	diurnal variation	en
dc.subject.other	indoor air	en
dc.subject.other	pollution exposure	en
dc.subject.other	air conditioning	en
dc.subject.other	air pollution control	en
dc.subject.other	air pollution indicator	en
dc.subject.other	air quality control	en
dc.subject.other	ambient air	en
dc.subject.other	article	en
dc.subject.other	building	en
dc.subject.other	circadian rhythm	en
dc.subject.other	controlled study	en
dc.subject.other	environmental exposure	en
dc.subject.other	indoor air pollution	en
dc.subject.other	microenvironment	en
dc.subject.other	nonhuman	en
dc.subject.other	prediction	en
dc.subject.other	priority journal	en
dc.subject.other	school	en
dc.subject.other	Greece	en
dc.title	Comparison of indoor and outdoor concentrations of CO at a public school. Evaluation of an indoor air quality model	en
heal.type	journalArticle	en
heal.identifier.primary	10.1016/S1352-2310(02)00151-6	en
heal.identifier.secondary	http://dx.doi.org/10.1016/S1352-2310(02)00151-6	en
heal.language	English	en
heal.publicationDate	2002	en
heal.abstract	A field study was carried out to investigate the internal and external carbon monoxide (CO) concentration levels of a public school building in Athens, Greece. Simultaneous measurements of indoor and outdoor CO concentrations were conducted using a non-dispersive infrared analyzer. Measurements of mean hourly CO concentrations inside and outside the sampling room were conducted on a 24-h basis for 13 consecutive days during May and June 1999 and for 14 consecutive days during December 1999. The aim of the study was to investigate the attenuation pattern of external pollution levels within the building. The diurnal concentration variations reported for different days during the week show that indoor CO concentrations are in general lower than the respective outdoor levels, and that the morning peaks of indoor concentrations show a delay of 1 h or less compared to the morning peaks of outdoor concentrations. The measured indoor to outdoor concentration ratios show a seasonal variation. An indoor air quality model for the prediction of indoor concentration levels developed by Hayes (J. Air Pollut. Control Assoc. 39 (11) (1989) 1453; J. Air Waste Manage. Assoc. 41 (2) (1991) 161) is coded as a computer program and evaluated using the experimental data. The model results are in good agreement with the indoor concentration measurements, although in some cases the model cannot respond adequately to sharp outdoor concentration changes. The ratio between measured and predicted daily maximum indoor concentration ranges between 0.88 and 1.23. The regression curve between predicted by the model and measured hourly indoor concentrations, for a continuous period of 96 h, has a slope of 0.64 and a coefficient of determination (R-2) of 0.69. (C) 2002 Elsevier Science Ltd. All rights reserved.	en
heal.publisher	PERGAMON-ELSEVIER SCIENCE LTD	en
heal.journalName	Atmospheric Environment	en
dc.identifier.doi	10.1016/S1352-2310(02)00151-6	en
dc.identifier.isi	ISI:000176065200006	en
dc.identifier.volume	36	en
dc.identifier.issue	11	en
dc.identifier.spage	1769	en
dc.identifier.epage	1781	en