5Likun Huang, Kun Wang et al. Study on the Seasonal Variation and Source Apportionment of PM10 in Harbin, China [ J ] . Aerosol and Air Quality Research, 2010, 10(1): 86-93.
6S.D Xie, Z. Liu et al. Spatiotemporal variations of ambient PM10 source contributions in Beijing in 2004 using positive matrix factorization [ J ] . Atmos. Chem. Phys.,2008, 8: 2701-2716.
7Xiaohui Bi, Yinchang Feng et al. Source apportionment of PM10 in six cities of northern China [ J ] . Atmospheric Environment, 2007, 41: 903-912.
8X. H. Wang, X. H. Bi et al. Chemical composition and sources of PM10 and PM25 aerosols in Guangzhou, China [ J ] . Environmental Monitoring and Assessment, 2006, 119: 425-439.
9Yonghua Xue, Jianhui Wu et al. Source Characterization and Apportionment of PM10 in Panzhihua, China [ J ] . Aerosol and Air Quality Research, 2010, doi: 10.4209/aaqr.2010.01.0002.