Figures & data
TABLE 1 Key molecular marker list of method-equivalent compounds with detection limits in pg per punch and check standard spike recoveries.
FIG. 1 Comparison of duplicate analysis of fine particulate matter samples collected in St. Louis.
FIG. 2 Average recovery and standard error of the TD-GCMS analysis of standards which were spiked onto atmospheric fine particulate matter samples (matrix spikes).
FIG. 3 Box plot of the annual distribution of select organic compounds concentrations showing 10th, 90th, and 99th percentiles with extreme values beyond the 10th and 90th percentiles and the 99th percentile prepresented as points, (a) for ambient concentration in ng m− 3, (b) ambient concentration normalized by ambient OC concentration ng μ g− 1. Annual data collected in East St. Louis, IL, May 2001 through April 2002.
TABLE 2 Individual dates removed for any key molecular marker above the 99th percentile. Extreme species for each day are listed by compound classes
TABLE 3 Monthly averages for select organic tracers, organic and elemental carbon (ng m− 3 and μ g m− 3)Footnote 1
FIG. 4 Annual average concentration of select organic compounds using six different representations of the every sixth day measurements for the total dataset and 99th percentile dataset. Annual data collected in East St. Louis, IL, May 2001 through April 2002.
FIG. 5 Monthly average analysis for June and November 2001 of select organic compounds, OC, and EC using six different representations of the every sixth day measurements from East St. Louis, IL.
FIG. 6 Day of the week averages for select representative organic tracers, OC, and EC. Annual data collected in East St. Louis, IL, May 2001 through April 2002.
