Table 4.
Expected versus actual metals of extraction solution.
| Expected (μg) | Actual (μg) | |
|---|---|---|
| Al | 1.3965 | 0.3545 |
| Ca | 1.5980 | 8.7968 |
| Cd | 0.0074 | 0.0005 |
| Ce | 0.1141 | 0.0379 |
| Cl | 15.5670 | 1.3850 |
| Cr | 0.0499 | 0.0034 |
| Cs | 0.0054 | 0.0028 |
| Cu | 0.1621 | 0.0410 |
| Fe | 5.7970 | 2.0322 |
| Mg | 0.7899 | 1.1810 |
| Mn | 0.4285 | 0.1080 |
| Mo | 0.0766 | 0.0145 |
| Na | 21.7918 | 19.2882 |
| Ni | 0.0172 | 0.0059 |
| P | 0.0000 | 1.7684 |
| Pb | 0.1644 | 0.0340 |
| S | 20.3513 | 0.1847 |
| Sn | 0.0065 | 0.0048 |
| Sr | 0.0223 | 0.0008 |
| Y | 0.0066 | 0.0001 |
| Zn | 1.0115 | 0.0930 |
| Total | 69.3641 | 35.3377 |
Average expected and actual metals (μg) on filters. Expected metals were calculated using total PM2.5 mass applied to the filter and ambient composition data. Actual values were determined from XRF of extracted solutions.