TY - JOUR A1 - Meng, Z. Y. A1 - Lin, W. L. A1 - Jiang, X. M. A1 - Yan, P. A1 - Wang, Y. A1 - Zhang, Y. M. A1 - Jia, X. F. A1 - Yu, X. L. T1 - Characteristics of atmospheric ammonia over Beijing, China JO - Atmos. Chem. Phys. J1 - ACP VL - 11 IS - 12 SP - 6139 EP - 6151 Y1 - 2011/06/29 PB - Copernicus Publications SN - 1680-7324 UR - http://www.atmos-chem-phys.net/11/6139/2011/ L1 - http://www.atmos-chem-phys.net/11/6139/2011/acp-11-6139-2011.pdf DO - 10.5194/acp-11-6139-2011 ER -