Dust build-up on surfaces in the indoor environment |
| |
| Institution: | 1. National Institute of Occupational Health, Lersø Parkallé 105, DK-2100 Copenhagen, Denmark;2. Harvard School of Public Health, 665 Huntington Ave., Boston, MA 02115, USA;1. Center for Health and the Environment, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA;2. Air Quality Research Center, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA;3. Department of Statistics, University of California, Davis, One Shields Avenue, Davis, CA, 95616, USA;1. Laboratório de Parasitologia Molecular, Instituto de Pesquisas Biomédicas and Laboratório de Biologia Parasitária, Faculdade de Biociências da Pontifícia Universidade Católica do Rio Grande do Sul (PUCRS), Porto Alegre, RS 90060-900, Brazil;2. Institute for Glycomics, Griffith University, Gold Coast Campus, Queensland, 4222, Australia;3. Department of Life Sciences, Faculty of Natural Sciences, Imperial College London, London, SW7 2AZ, United Kingdom;1. Department of Computer Science, University of Milano, Via Comelico 39, 20135 Milano, Italy;2. Department of Cultural Heritage and Environment, University of Milano, Via Festa del Perdono 7, 20122 Milano, Italy;1. Clinique Interdisciplinaire de Mémoire, Département des Sciences Neurologiques du CHU de Québec, and Faculté de Médecine, Université Laval, QC, Canada;2. Centre de recherche de l''Institut universitaire en santé mentale de Québec, Québec, Canada;3. Département de radiologie, Université Laval, Québec, Canada |
| |
| Abstract: | The concentration and the composition of dust in the indoor environment has been associated with reported symptoms of the sick building syndrome. Levels of airborne concentrations of dust particles are well known. However, the relation to dust on surfaces for office environments are not well described. In this study, 662 measurements were performed of surface dust concentrations on hard surfaces in 19 buildings within Harvard University based on a sticking gelatine foil method. The measure is the dust covered area of the surface as a percentage. In three offices, the build-up of dust on surfaces was measured for a period of five days. Close to these surfaces the airborne PM2.5 and PM10 particle mass concentrations were measured simultanously. A significant correlation between the dust build-up and the difference between the PM10 and the PM2.5 was established. The particle size distribution was measured by means of an Aerodynamic Particle Sizer. The mean dust build-up normalized with the measured PM10 was approximately four times higher than the equivalent calculated by a deposition model. This may in part be due to the effect of preferred orientation when particles settle to a surface. Different data for dust on surfaces and airborne particles in offices were compared. The levels of airborne particles in offices in Europe seem to be higher than the levels in the US. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
