Figures & data
Figure 1. Location of the State of Nuevo León, México, and the Monterrey Metropolitan Area.
Table 1. Annual average PM2.5 concentration of (μg/m3) measured at five automatic monitoring stations in the MMA during 2003 to 2007
Figure 2. Map of the MMA with the location of the sampling sites (ESC and SC), the monitoring stations, the power plants, and the oil refinery.
Table 2. Average PM2.5 concentrations (μg/m3) ± standard deviation and maximum
Figure 3. Concentration of PM2.5 measured at the two sampling sites (ESC and SC).
Figure 4. Wind roses during the sampling period: (a) northwest station and (b) southwest station.
Figure 5. Determination coefficients of components in the PM2.5 samples.
Figure 6. Relative contribution of chemical species in the PM2.5 samples, general average.
Figure 7. Relative contribution of the chemical species in the PM2.5 samples at each site: (a) Escobedo (ESC) and (b) Santa Catarina (SC).
Figure 8. Enrichment factor (EF) at the ESC and SC sites.
