TY - JOUR A1 - Xie, Y. A1 - Wang, G. A1 - Wang, X. A1 - Chen, J. A1 - Chen, Y. A1 - Tang, G. A1 - Wang, L. A1 - Ge, S. A1 - Xue, G. A1 - Wang, Y. A1 - Gao, J. T1 - Observation of nitrate dominant PM2.5 and particle pH elevation in urban Beijing during the winter of 2017 JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 2019 SP - 1 EP - 25 Y1 - 2019/07/15 PB - Copernicus Publications SN - 1680-7375 UR - https://acp.copernicus.org/preprints/acp-2019-541/ L1 - https://acp.copernicus.org/preprints/acp-2019-541/acp-2019-541.pdf DO - 10.5194/acp-2019-541 ER -