Abstract:The PM10 samples collected throughout 4 months at Hangtian Qiao in Beijing. Scanning electron microscopey (SEM) and X-ray energy dispersive spectroscopy (EDS) were used to investigate the individual particle morphology and the chemical composition. According to the morphology and composition, 9 classes particles were found. Meanwhile, the mass concentrations of metal elements in PM10 were measured using inductively coupled plasma mass spectrometer (ICP-MS). The results showed that the concentrations of Ca, Mg and Fe were decreased with the decrease of particles size, whereas the contents of Pb, Zn, Ni and Hg increased, especially for fine particles (PM smaller than 2.1mm). The result of factor analysis(FA) in sources apportionment of PM10 showed that soil dust/ building construction dust dominated the total mass of PM10, contributing 44.0%, vehicle exhaust/road dust was the next important contributor, accounting for 28.1% of PM10.
杨仪方, 钱枫, 张慧峰, 边森, 唐玉佳. 北京市交通干线周围可吸入大气颗粒物的污染特性[J]. 中国环境科学, 2010, 30(7): 962-966.
YANG Yi-Fang, QIAN Feng, ZHANG Hui-Feng, BIAN Sen, TANG Yu-Jia. Characteristics and source apportionment of PM10 at urban traffic trunk roads and surrounding areas in Beijing. CHINA ENVIRONMENTAL SCIENCECE, 2010, 30(7): 962-966.