[1] [1] Ghude S D, Van der A R J, Beig G, et al. Environmental Pollution, 2009, 157: 1873.

[2] [2] Cheng Y, Zheng G, Wei C, et al. Sci. Adv., 2016, 2: e1601530.

[3] [3] Sun J, Zhou T. BMC Public Health, 2017, 17: 212.

[4] [4] Zhao B, Wang P, Ma J Z, et al. Atmos. Chem. Phys., 2012, 12: 481.

[7] [7] Gu J, Chen L, Yu C, et al. Remote Sensing, 2017, 9: 519.

[8] [8] Hnninger G, Friedeburg C V, Platt U. Atmos. Chem. Phys., 2004, 4: 231.

[9] [9] Jin J, Ma J, Lin W, et al. Atmospheric Environment, 2016, 133: 12.

[12] [12] Chan K L, Hartl A, Lam Y F, et al. Atmospheric Environment, 2015, 119: 45.

[13] [13] Hendrick F, Müller J F, Clémer K, et al. Atmos. Chem. Phys., 2014, 14: 765.

[14] [14] Li X, Brauers T, Hofzumahaus A, et al. Atmos. Chem. Phys., 2013, 13: 2133.

[15] [15] Ma J Z, Beirle S, Jin J L, et al. Atmos. Chem. Phys., 2013, 13: 1547.

[16] [16] IrieH, KanayaY, AkimotoH, et al. Atmos. Chem. Phys., 2008, 8: 6577.

[18] [18] Xu J, Xie P H, Si F Q, et al. Chinese Physics B, 2014, 23: 094210.

[19] [19] Shaiganfar R, Beirle S, Sharma M, et al. Atmos. Chem. Phys., 2011, 11: 10871.

[21] [21] Xu J, Ma J Z, Zhang X L, et al. Atmos. Chem. Phys., 2011, 11: 12241.