6NORBERT E. Fine particles and human health a review of epidemiological studies[J]. Toxicology Letters, 2004,149 ( 1/2/ 3) . 235-242.
7MATTHEW E K. Particulate pollution trends in the United States[J]. Regional Science and Urban Economics, 1997, 27 (1).87-107.
8兰州市环境保护局.兰州市环境状况公报[R].兰州:兰州市环境保护局,2011.
9WANG Shigong, FENG Xinyuan, ZENG Xiaoqing, et al. A study on variations of concentrations of particulate matter with different sizes in Lanzhou, China [J]. Atmospheric Environ- ment, 2009,43(17) : 2823-2828.
10PETER C C, CHEN Yuchun, LU Shihua, et al. Particulate air pollution in Lanzhou China[-JT. Environment International, 2008,34(5) .698-713.
4DENG X L, SHI C E,WU B W, et al. 2012. Analysis of aerosolcharacteristics and their relationships with meteorological parametersover Anhui province in China [J].Atmospheric research, 109-110:52-63.
5LI R K, LI Z P, GAO W J, et al. 2015. Diurnal, seasonal, and spatialvariation of PM2.5 in Beijing [J]. Science Bulletin, 60(3): 387-395.