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题名: Source, health risk and composition impact of outdoor very fine particles(VFPs) to school indoor environment in Xi'an, Northwestern China
作者: Xu,HM(Xu,Hongmei)1, 2;  Guinot, Benjamin3;  Cao,JJ(Cao,Junji)2, 4;  Li,YQ(Li,Yaqi)2, 4;  Ho, KF(Ho,Kinfai)5;  Shen,ZX(Shen,Zhenxing)1;  Liu,SX(Liu,Suixin)2;  Zhang,T(Zhang,Ting)2;  Lei,YL(Lei,Yali)1;  Zhang,Q(Zhang,Qian)1;  Sun,J(Sun,Jian)1;  Gao,JJ(Gao,Jinjin)1
通讯作者: Cao,Junji
关键词: Very fine particles (VFPs, PM0.25) ;  Classroom ;  Indoor and outdoor ;  Health risk
刊名: Science of the Total Environment
发表日期: 2018-01-15
DOI: 10.1016/j.scitotenv.2017.08.101
卷: 612, 期:2018, 页:238-246
收录类别: SCI
文章类型: 期刊论文
英文摘要: Very fine particles (VFPs, PM0.25) are able to travel deeply into the respiratory tract and can produce adverse health effects, especially to children. Information on the VFPs in schools is generally lacking. We investigated the chemical compositions, sources and health risks of VFPs in a junior secondary school of Xi'an, China, during May 16th to 30th, 2012. The results showed that organic matter (37% and 39%), SO42- (13% and 11%) and geological material (20% and 24%) were the major components of VFPs both outdoors and indoors. The VFP species indoors, such as SO42- and elemental carbon, are mainly from outdoor origins, e.g. coal burning and traffic emissions. But particle resuspension by student activities, chalk dust and import from outdoors of soil dust also contributed to deteriorate air quality in the classroom. By contrast to outdoors, several indoor factors, like higher room temperature, limited volume and longer suspension time of classroom particles, can even lead to significant secondary pollutant production. Heavy metals (mainly from outside) bound to indoor VFPs are supposedly associated to non-cancer health risks, especially Pb through ingestion pathway and Mn through dermal contact. Outdoor VFPs may be associated to PAHs cancer health risks via inhalation way. This study confirms that both indoor and outdoor sources had contributions to indoor VFPs, and that VFPs health risk should be of higher concern in urban areas of Northwestern China.
语种: 英语
所属项目编号: 41503096 ;  41150110474 ;  2016JQ4019
项目资助者: Natural Science Foundation ofChina (NSFC) ;  Research Fund for International Young Scientists of the Chinese Academy of Sciences ;  Natural Science Basic Research Plan in Shaanxi Province of China
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内容类型: 期刊论文
URI标识: http://ir.ieecas.cn/handle/361006/5360
Appears in Collections:粉尘与环境研究室_期刊论文

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作者单位: 1.Department of Environmental Science and Engineering, Xi'an Jiaotong University, Xi'an, China
2.Key Lab of Aerosol Chemistry & Physics, Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, China
3.Laboratoire d'Aérologie, Université de Toulouse, CNRS, UPS, France
4.Institute of Global Environmental Change, Xi'an Jiaotong University, Xi'an, China
5.School of Public Health and Primary Care, The Chinese University of Hong Kong, Hong Kong, China

Recommended Citation:
Xu,HM,Guinot, Benjamin,Cao,JJ,et al. Source, health risk and composition impact of outdoor very fine particles(VFPs) to school indoor environment in Xi'an, Northwestern China[J]. Science of the Total Environment,2018,612(2018):238-246.
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文件名: Source, health risk and composition impact of outdoor very fine particles (VFPs) to school indoor environment in Xi'an, Northwestern China.pdf
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