TY - JOUR A1 - Han, Y. M. A1 - Cao, J. J. A1 - Lee, S. C. A1 - Ho, K. F. A1 - An, Z. S. T1 - Different characteristics of char and soot in the atmosphere and their ratio as an indicator for source identification in Xi'an, China JO - Atmos. Chem. Phys. Discuss. J1 - ACPD VL - 9 IS - 3 SP - 13271 EP - 13298 Y1 - 2009/06/16 PB - Copernicus Publications SN - 1680-7375 UR - http://www.atmos-chem-phys-discuss.net/9/13271/2009/ L1 - http://www.atmos-chem-phys-discuss.net/9/13271/2009/acpd-9-13271-2009.pdf DO - 10.5194/acpd-9-13271-2009 ER -