首页|Concentrations of NO2 and NOX across the Perth metropolitan area, Western Australia
Concentrations of NO2 and NOX across the Perth metropolitan area, Western Australia
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Background Numerous studies have shown that high levels of air pollution are associated with adverse health effects， particularly in the elderly。 The Health in Men Air Quality Study is investigating the health effects of long term exposure to air pollution in a cohort of 12，000 older men residing in Perth， Western Australia。 This study is being undertaken in affiliation with the The European Study of Cohorts for Air Pollution program。 Aims To describe NO2 and NOx concentrations from 43 sites across Perth by season and site type。 Methods Ogawa passive diffusion badges were used to collect nitrogen oxide samples。 Sites were selected to represent spatial variation of air pollution at the cohort home addresses across 3 categories: regional (n=2) and urban background (n=19) and street sites (n=22)。 Fourteen day samples were taken during 3 seasons in 2012。The annual average， median and range were determined， stratified by site type。 Data were transformed using the square root and ANOVA was used to test for significant differences in means between site types。 Results The median concentrations for NO2 and NOx for all sites and seasons were: 12。58μg/m3 (range 2。27-24。87， SD 5。69) and 21。31μg/m3 (range 3。59-59。76， SD 12。43)。 The highest NO2 and NOx median concentrations were found at street locations: 14。62 μg/m3 (range 5。90-24。87， SD 5。40) and 31。13μg/m3 (range 11。95-59。76， SD 11。74)， followed by urban sites: 11。13μg/m3 (range 3。17-19。83， SD 4。32) and 17。64μg/m3 (range 4。79-36。36， SD 7。33) with the lowest concentrations found at regional sites: 2。98μg/m3 (range 2。27-3。70， SD 1。01) and 4。45μg/m3 (range 3。59-5。32， SD 1。22)。 Mean concentrations for NO2 and NOx were significantly different between each of the site types。 Conclusions The NO2 and NOx median concentrations were low and below the Australian National Environmental Protection Measure standard for NO2。 Concentrations were consistent with the lower concentrations reported by ESCAPE and showed similar trends by site type。
Jane Heyworth、Anna-Lena Arnold、Andrea Hinwood
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Annual conference of the International Society of Exposure Science
Basel(CH)
23rd Annual conference of the International Society of Exposure Science 2013 : environment and health - bridging south, north, east and west
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