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. Author manuscript; available in PMC: 2006 Jan 25.
Published in final edited form as: Environ Sci Technol. 2004 May 1;38(9):2584–2592. doi: 10.1021/es034962s

FIGURE 2.

FIGURE 2

Time series showing active surface, TPAH, and PM2.5 concentrations during the truck trip between Cuautitlán Izcalli and Tacuba. The truck was parked at a warehouse between approximately 10:15 and 11:00 a.m.