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Concentrations, particle-size distributions, and indoor/outdoor differences of polycyclic aromatic hydrocarbons (PAHs) in a middle school classroom in Xi'an, China
Xu, Hongmei1,2; Guinot, Benjamin2,3; Niu, Xinyi2,4; Cao, Junji2,5; Ho, Kin Fai6; Zhao, Zhuohui7; Ho, Steven Sai Hang2,8; Liu, Suixin2
2015-10-01
发表期刊ENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN0269-4042
卷号37期号:5页码:861-873
文章类型Article
摘要

Polycyclic aromatic hydrocarbons (PAHs) attached to particulate matter can affect respiratory health, especially the health of children, but information on the air quality in schools is generally lacking. This study investigated the PAH concentrations in a naturally ventilated classroom in Xi'an, China, from 16 to 31 May 2012. Particulate PAH concentrations were measured for samples collected on five-stage cascade impactors deployed inside the classroom and outside. PM2.5-bound PAH concentrations were 53.2 ng m(-3) indoors and 72.9 ng m(-3) outdoors. PAHs attached to very fine particles (VFPs) accounted for similar to 70 % of the total PAHs. The PAH concentrations indoors were affected by the students' activities, cleaning, and smoking, while outdoors, the main sources were motor vehicle emissions and contaminated road dust. Particle-bound PAHs infiltrated the classroom through open windows, but the activities of the students and staff were also associated with an increase of PAHs attached to particles larger than 1.0 A mu m, most likely through resuspension. Cycles in the sources led to PAH concentrations 2-3 times higher on weekdays compared to weekends, both indoors and outdoors. PAH toxicity risks inside the classroom were substantially lower than those outdoors, and the highest risks were associated with VFPs.

关键词Aerosols Pahs School Air Quality Indoor/outdoor Ratio Size Distribution Health Risk
WOS标题词Science & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
DOI10.1007/s10653-014-9662-z
关键词[WOS]Fine Particulate Matter ; Nonpolar Organic-compounds ; Toxic Equivalency Factors ; Port Thermal-desorption ; Air-pollution ; Carbonaceous Aerosols ; Source Identification ; Chemical-composition ; Seasonal-variations ; Elementary-schools
收录类别SCI
语种英语
WOS研究方向Engineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources
WOS类目Engineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
WOS记录号WOS:000361800800006
出版者SPRINGER
引用统计
文献类型期刊论文
条目标识符http://ir.ieecas.cn/handle/361006/9250
专题粉尘与环境研究室
通讯作者Xu, Hongmei
作者单位1.Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
2.Chinese Acad Sci, Inst Earth Environm, SKLLQG, Key Lab Aerosol Chem & Phys, Xian, Peoples R China
3.Univ Toulouse 3, CNRS, Observ Midi Pyrenees, Lab Aerol, F-31062 Toulouse, France
4.Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
5.Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
6.Chinese Univ Hong Kong, Sch Publ Hlth & Primary Care, Hong Kong, Peoples R China
7.Fudan Univ, Dept Environm Hlth, Sch Publ Hlth, Shanghai 200433, Peoples R China
8.Hong Kong Premium Serv & Res Lab, Kowloon, Hong Kong, Peoples R China
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GB/T 7714
Xu, Hongmei,Guinot, Benjamin,Niu, Xinyi,et al. Concentrations, particle-size distributions, and indoor/outdoor differences of polycyclic aromatic hydrocarbons (PAHs) in a middle school classroom in Xi'an, China[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2015,37(5):861-873.
APA Xu, Hongmei.,Guinot, Benjamin.,Niu, Xinyi.,Cao, Junji.,Ho, Kin Fai.,...&Liu, Suixin.(2015).Concentrations, particle-size distributions, and indoor/outdoor differences of polycyclic aromatic hydrocarbons (PAHs) in a middle school classroom in Xi'an, China.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,37(5),861-873.
MLA Xu, Hongmei,et al."Concentrations, particle-size distributions, and indoor/outdoor differences of polycyclic aromatic hydrocarbons (PAHs) in a middle school classroom in Xi'an, China".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 37.5(2015):861-873.
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