Relationships between size segregated mass concentration data and ultrafine particle number concentrations in urban areas |
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| Institution: | 1. Shanghai Meteorological Service, Shanghai 200030, China;2. Shanghai Key Laboratory of Meteorology and Health, Shanghai 200135, China;1. International Laboratory for Air Quality and Health, Queensland University of Technology, Brisbane, Australia;2. Institute for Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Australia;3. Institute of Environmental Assessment and Water Research, Spanish National Research Council Barcelona, Spain;4. Centre for Research in Environmental Epidemiology, Barcelona, Spain;5. School of Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham B15 2TT, UK;1. Institute of Industrial Technology, Changwon National University, 20 Changwondaehak-ro Uichang-gu Changwon-si, Gyeongsangnam-do 641-773, Republic of Korea;2. School of Civil, Environmental and Chemical Engineering, Changwon National University, 20 Changwondaehak-ro Uichang-gu Changwon-si, Gyeongsangnam-do 641-773, Republic of Korea;3. Gyeongsangnamdo Office of Education, 241 Jungangdaero, Uichang-gu, Changwon-si, Gyeongsangnam-do 51430, Republic of Korea |
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| Abstract: | Mass concentration data derived from samples collected with a micro-orifice uniform deposit impactor (MOUDI) in six Australian urban centers during periods of significant particle loading have been used to investigate the relationships between TSP, PM10, PM2.5, PM1 and ultrafine particles. While PM10 and PM2.5 display a clear relationship, the lack of correlation between PM10 and the coarse fraction of PM10 (PM10–PM2.5) suggests that variation in PM10 is dominated by variance in PM2.5. Given that particles of less than 2.5 μm are suspected to have adverse health effects, increasing the extent of PM2.5 monitoring may improve detection of relationships between air pollution and human health. A lack of correlation between both PM10 and PM2.5 with ultrafine mass concentrations indicates that PM10 and PM2.5 cannot be used as a surrogate for ultrafine mass concentration. Similarly, ultrafine number concentrations cannot be inferred from mass concentration information determined by the MOUDI. |
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