TY - JOUR A1 - Tao, J. A1 - Zhang, L. A1 - Cao, J. A1 - Zhang, R. T1 - A review of current knowledge concerning PM2.5 chemical composition, aerosol optical properties, and their relationships across China JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 2017 SP - 1 EP - 70 Y1 - 2017/04/18 PB - Copernicus Publications SN - 1680-7375 UR - https://acp.copernicus.org/preprints/acp-2017-271/ L1 - https://acp.copernicus.org/preprints/acp-2017-271/acp-2017-271.pdf DO - 10.5194/acp-2017-271 ER -