TY - JOUR A1 - Thornhill, D. A. A1 - Herndon, S. C. A1 - Onasch, T. B. A1 - Wood, E. C. A1 - Zavala, M. A1 - Molina, L. T. A1 - Gaffney, J. S. A1 - Marley, N. A. A1 - Marr, L. C. T1 - Particulate polycyclic aromatic hydrocarbon spatial variability and aging in Mexico City JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 7 IS - 6 SP - 15693 EP - 15721 Y1 - 2007/11/09 PB - Copernicus Publications SN - 1680-7367 UR - http://www.atmos-chem-phys-discuss.net/7/15693/2007/ L1 - http://www.atmos-chem-phys-discuss.net/7/15693/2007/acpd-7-15693-2007.pdf ER -