3Pope C A, Thun M J, Namboodiri M M, et al. 1995. Particu- late air pollution as a predictor of mortality in a prospective study of US adults[J]. American Journal of Respiratory and Critical Care Medicine, 1995 (5):669-674.
6Wei Feng, Chapman R S, Teng E, et al. Ambient concentrations and elemental compositions of PMI0 and PMz5 in four Chinese cities. Environ Sci Technol, 1999, 33: 4188-4193.
7Dnany H, O scar B, Gerard H, et al. PMI0 and PMz5 concentration in Central and Eastern Europe: results from the CESAR study. Atmospheric Environment, 2001, 35: 2757-2771.
8Rawerler L E, Moyers J L. Atomic absorption procedures for analysis of metals in atmospheric particulate matter. Environ Sci Techno 1, 1996, 8: 152-159.
10Wei Feng, Chapman R S, Teng E, et al. Ambient concentrationsand elemental compositions of PM 10 and PM2.5 in four Chinesecities [ J ]. Environ. Sci. Techno 1. , 1999 (33) : 4188 -4193.
