TY - JOUR A1 - Zhao, P. S. A1 - Dong, F. A1 - He, D. A1 - Zhao, X. J. A1 - Zhang, X. L. A1 - Zhang, W. Z. A1 - Yao, Q. A1 - Liu, H. Y. T1 - Characteristics of concentrations and chemical compositions for PM2.5 in the region of Beijing, Tianjin, and Hebei, China JO - Atmos. Chem. Phys. J1 - ACP VL - 13 IS - 9 SP - 4631 EP - 4644 Y1 - 2013/05/06 PB - Copernicus Publications SN - 1680-7324 UR - https://acp.copernicus.org/articles/13/4631/2013/ L1 - https://acp.copernicus.org/articles/13/4631/2013/acp-13-4631-2013.pdf DO - 10.5194/acp-13-4631-2013 ER -