globalchange  > 气候变化事实与影响
DOI: 10.1016/j.atmosenv.2014.06.014
Scopus记录号: 2-s2.0-84902290520
论文题名:
Indoor PM2.5 in Santiago, Chile, spring 2012: Source apportionment and outdoor contributions
作者: Barraza F; , Jorquera H; , Valdivia G; , Montoya L; D
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2014
卷: 94
起始页码: 692
结束页码: 700
语种: 英语
英文关键词: Household infiltration ; Indoor air quality ; Source apportionment ; Sustainable urban development
Scopus关键词: Quartz ; Chemical composition data ; Environmental tobacco smokes ; Indoor air quality ; Inter quartile ranges ; Positive Matrix Factorization ; Source apportionment ; Source identification ; Sustainable urban development ; Indoor air pollution ; element ; organic carbon ; politef ; silicon dioxide ; sulfate ; sulfur ; tobacco smoke ; trace element ; air quality ; concentration (composition) ; human activity ; indoor air ; particulate matter ; seasonal variation ; trace element ; air filter ; air quality ; air sampling ; ambient air ; article ; chemical analysis ; chemical composition ; Chile ; cleaning ; cooking ; dust ; exhaust gas ; household ; indoor air pollution ; particulate matter ; population exposure ; priority journal ; social status ; spring ; Chile ; Metropolitana
Scopus学科分类: Environmental Science: Water Science and Technology ; Earth and Planetary Sciences: Earth-Surface Processes ; Environmental Science: Environmental Chemistry
英文摘要: Indoor and outdoor PM2.5 sampling campaigns were carried out at Santiago, Chile (6 million inhabitants, 33.5°S, 70.6°W) in spring 2012. A pair of samplers was placed inside each household studied and an additional pair of samplers was placed at a fixed outdoor location for measuring trace elements and elemental (EC) and organic carbon (OC) in Teflon and quartz filters, respectively. A total of 47 households in downtown Santiago were included in this study. Mean outdoor and indoor PM2.5 concentrations were 19.2 and 21.6μg/m3, respectively. Indoor concentrations of PM2.5 were affected by socioeconomic status (p=0.048) but no such evidence was found for PM2.5 species, except lead (p=0.046). Estimated species infiltration factors were 0.70 (±0.19), 0.98 (±0.21), 0.80 (±0.12) and 0.80 (±0.03) for PM2.5, OC, EC and sulfur, respectively. Estimated household infiltration factors had a median of 0.75, mean of 0.78, standard deviation of 0.18 and interquartile range (IQR) 0.67-0.86.For the very first time, Positive Matrix Factorization (PMF3) was applied to an indoor PM2.5 chemical composition data set measured at Santiago. Source identification was carried out by inspection of key species and by comparison with published source profiles; six sources were identified. Three of them were outdoor contributions: motor vehicles with 5.6 (±0.7)μg/m3, street dust with 2.9 (±0.5)μg/m3 and secondary sulfates with 3.4 (±0.5)μg/m3. The indoor sources were: indoor dust with 1.6 (±0.3)μg/m3, cleaning and cooking with 2.3 (±0.3)μg/m3 and cooking and environmental tobacco smoke with 6.1 (±0.7)μg/m3. There is potential for further reducing PM2.5 population exposure in the short term -by improving ventilation of indoor air and controlling indoor sources - and in the long term - with filtration of outdoor air and household improvements to reduce air change rates. © 2014 Elsevier Ltd.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81096
Appears in Collections:气候变化事实与影响

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作者单位: Departmento de Ingeniería Química y Bioprocesos, Pontificia Universidad Católica de Chile, Avda. Vicuña Mackenna 4860, Santiago 7820436, Chile; Departamento de Salud Pública, Pontificia Universidad Católica de Chile, Marcoleta 340, Santiago 8330033, Chile; Civil, Environmental and Architectural Engineering Department, University of Colorado Boulder, UCB 428 Boulder, Colorado, United States

Recommended Citation:
Barraza F,, Jorquera H,, Valdivia G,et al. Indoor PM2.5 in Santiago, Chile, spring 2012: Source apportionment and outdoor contributions[J]. Atmospheric Environment,2014-01-01,94
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