Particle size distribution and air pollution patterns in three urban environments in Xi'an, China

被引:31
作者
Niu, Xinyi [1 ,2 ]
Guinot, Benjamin [2 ,3 ]
Cao, Junji [2 ,4 ]
Xu, Hongmei [2 ,5 ]
Sun, Jian [5 ]
机构
[1] Xi An Jiao Tong Univ, Sch Human Settlements & Civil Engn, Xian 710049, Peoples R China
[2] Chinese Acad Sci, Inst Earth Environm, Sch Key Lab Aerosol Sci & Technol SKLLQG, Xian 710075, Peoples R China
[3] Natl Ctr Sci Res, Observ Midi Pyrenees, Toulouse, France
[4] Xi An Jiao Tong Univ, Inst Global Environm Change, Xian 710049, Peoples R China
[5] Xi An Jiao Tong Univ, Dept Environm Sci & Engn, Xian 710049, Peoples R China
关键词
Indoor air quality; Carbon dioxide; Particle mass; Particle size distribution; INDOOR AIR; PARTICULATE MATTER; INDOOR/OUTDOOR RELATIONSHIPS; RESIDENTIAL HOMES; NITROGEN-DIOXIDE; HONG-KONG; QUALITY; POLLUTANTS; OUTDOOR; EXPOSURE;
D O I
10.1007/s10653-014-9661-0
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Three urban environments, office, apartment and restaurant, were selected to investigate the indoor and outdoor air quality as an inter-comparison in which CO2, particulate matter (PM) concentration and particle size ranging were concerned. In this investigation, CO2 level in the apartment (623 ppm) was the highest among the indoor environments and indoor levels were always higher than outdoor levels. The PM10 (333 A mu g/m(3)), PM2.5 (213 A mu g/m(3)), PM1 (148 A mu g/m(3)) concentrations in the office were 10-50 % higher than in the restaurant and apartment, and the three indoor PM10 levels all exceeded the China standard of 150 A mu g/m(3). Particles ranging from 0.3 to 0.4 A mu m, 0.4 to 0.5 A mu m and 0.5 to 0.65 A mu m make largest contribution to particle mass in indoor air, and fine particles number concentrations were much higher than outdoor levels. Outdoor air pollution is mainly affected by heavy traffic, while indoor air pollution has various sources. Particularly, office environment was mainly affected by outdoor sources like soil dust and traffic emission; apartment particles were mainly caused by human activities; restaurant indoor air quality was affected by multiple sources among which cooking-generated fine particles and the human steam are main factors.
引用
收藏
页码:801 / 812
页数:12
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