Table 2.
Average relative percent difference between concentrations of PAHs in matched quality control (QC) samples. PAHs are ordered by molecular weight from lightest to heaviest.
| PAH | Intrabatch QC, SRM 2585a | Interbatch QC, SRM 2585b | Intrabatch QC, duplicate samplesc | Interbatch QC, replicate samplesd |
|---|---|---|---|---|
| Phenanthrene | 1.5 | 21.0 | 8.9 | 33 |
| Anthracenee | 28.0 | 17.0 | 26 | |
| Fluoranthene | 3.2 | 25.0 | 10.0 | 23 |
| Pyrene | 3.8 | 24.0 | 5.6 | 17 |
| Benzo[a]anthracene | 1.2 | 9.3 | 13.0 | 18 |
| Chrysene | 1.2 | 15.0 | 8.0 | 10 |
| Benzo[b]fluoranthene | 15.0 | 8.4 | 11.0 | 15 |
| Benzo[k]fluoranthene | 3.9 | 4.5 | 13.0 | 19 |
| Benzo[a]pyrene | 1.8 | 3.1 | 14.0 | 25 |
| Indeno[1,2,3-c,d]pyrene | 1.7 | 7.7 | 10.0 | 19 |
| Dibenzo[a,h]anthracene | 1.5 | 12.0 | 14.0 | 20 |
| Benzo[g,h,i]perylene | 1.6 | 12.0 | 6.2 | 15 |
| aThree pairs of duplicate SRM 2585 dust samples analyzed concurrently. bSeventeen replicate SRM 2585 dust samples analyzed over the course of the study. cFifty-six pairs of duplicate samples, each pair analyzed concurrently. dForty replicate quality control samples analyzed over the course of the study. eIntrabatch quality control SRM 2585 samples were not analyzed for anthracene because an appropriate calibration standard was not available. | ||||