Table 15.
Molecular Markers of Area Exposure Sample Averages by Location
| Dock (n = 14) | Shop (n = 8) | Yard Upwind (n = 6) | Urban Background (n = 9) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Molecular Markers (µg/m3) | Averagea | Uncb | SDc | Average | Unc | SD | Average | Unc | SD | Average | Unc | SD |
| OC | 11.03 | 0.90 | 2.21 | 12.76 | 0.95 | 2.49 | 8.62 | 0.76 | 1.77 | 8.43 | 0.74 | 2.83 |
| EC | 1.18 | 0.15 | 0.38 | 1.97 | 0.18 | 0.82 | 1.19 | 0.15 | 0.38 | 0.94 | 0.14 | 0.34 |
| (ng/m3) | ||||||||||||
| Benzo[b&k]fluoranthene | 0.06 | 0.01 | 0.19 | 0.16 | 0.03 | 0.21 | NDd | 0.07 | 0.01 | 0,05 | ||
| Benzo[e]pyrene | 0.04 | 0.01 | 0.07 | 0.10 | 0.20 | 0.10 | 0.04 | 0.01 | 0.10 | 0.05 | 0.01 | 0.04 |
| Benzo[a]pyrene | 0.03 | 0.01 | 0.10 | 0.07 | 0.02 | 0.10 | ND | 0.003 | 0.001 | 0.01 | ||
| Indeno[1,2,3-cd]pyrene | 0.08 | 0.02 | 0.21 | 0.10 | 0.02 | 0.10 | 0.00 | 0.00 | 0.01 | 0.03 | 0.01 | 0.05 |
| Benzo[g,h,i]perylene | 0.12 | 0.04 | 0.34 | 0.00 | 0.00 | 0.01 | 0.07 | 0.02 | 0.16 | 0.00 | 0.00 | 0.01 |
| 22,29,30-Trisnomeohopane | 0.18 | 0.03 | 0.09 | 0.24 | 0.03 | 0.07 | 0.05 | 0.01 | 0.04 | 0.03 | 0.00 | 0.03 |
| 17α(H}-21β(H)-29-norhopane | 0.84 | 0.13 | 0.27 | 0.92 | 0.14 | 0.21 | 0.57 | 0.09 | 0.31 | 0.30 | 0.04 | 0.14 |
| 17α(H)-21β(H)-Hopane | 0.45 | 0.05 | 0.18 | 0.49 | 0.06 | 0.19 | 0.34 | 0.04 | 0.18 | 0.21 | 0.02 | 0.09 |
| 12S-17α(H),21β(H)-30-Homohopane | 0.23 | 0.03 | 0.11 | 0.24 | 0.03 | 0.13 | 0.19 | 0.02 | 0.12 | 0.09 | 0.01 | 0.06 |
| 22R-17α(H),21β(H)-30-Homohopane | 0.17 | 0.02 | 0.09 | 0.18 | 0.02 | 0.10 | 0.15 | 0.02 | 0.10 | 0.07 | 0.01 | 0.05 |
| 20R, 5α(H),14β(H),17β(H)- Cholestane |
0.25 | 0.03 | 0.13 | 0.36 | 0.05 | 0.11 | 0.12 | 0.02 | 0.07 | 0.03 | 0.00 | 0.05 |
| 20S, 5α(H),14β(H),17β(H)- Cholestane |
0.11 | 0.02 | 0.05 | 0.15 | 0.02 | 0.05 | 0.06 | 0.01 | 0.04 | 0.01 | 0.00 | 0.02 |
| 20R,abb-sitostane | 0.15 | 0.02 | 0.06 | 0.16 | 0.02 | 0.06 | 0.08 | 0.01 | 0.07 | 0.06 | 0.01 | 0.04 |
| 20S,abb-sitostane | 0.18 | 0.02 | 0.11 | 0.20 | 0.03 | 0.09 | 0.09 | 0.01 | 0.07 | 0.01 | 0.07 | 0,01 |
| Tetracosane | 5.31 | 0.49 | 3.08 | 7.86 | 0.73 | 2.82 | 1.44 | 0.13 | 1.05 | 1.54 | 0.14 | 1.31 |
| Pentacosane | 4.59 | 0.61 | 1.67 | 5.46 | 0.73 | 2.15 | 2.26 | 0.30 | 1.14 | 1.62 | 0.22 | 0.83 |
| Hexacosane | 2.29 | 0.35 | 1.67 | 2.09 | 0.32 | 0.85 | 0.98 | 0.15 | 0.63 | 0.48 | 0.07 | 0.50 |
| Heptacosane | 2.95 | 0.56 | 2.18 | 1.68 | 0.32 | 0.95 | 0.70 | 0.13 | 0.60 | 0.57 | 0.11 | 0.57 |
| Octacosane | 1.60 | 0.30 | 3.01 | 0.52 | 0.10 | 0.36 | 0.51 | 0.10 | 0.34 | 0.29 | 0.06 | 0.34 |
| Nonacosane | 2.80 | 0.41 | 2.84 | 1.36 | 0.20 | 0.92 | 0.54 | 0.08 | 0.21 | 0.47 | 0.07 | 0.49 |
| Triacotane | 1.28 | 0.19 | 1.92 | 0.65 | 0.09 | 0.89 | 0.08 | 0.01 | 0.07 | 0.22 | 0.03 | 0.27 |
| Hentriacontane | 6.05 | 1.04 | 6.79 | 3.36 | 0.56 | 2.42 | 0.64 | 0.11 | 0.63 | 0.45 | 0.08 | 0.52 |
| Dotriacontane | 0.97 | 0.17 | 0.90 | 0.66 | 0.11 | 0.82 | 0.05 | 0.01 | 0.07 | 0.17 | 0.03 | 0.22 |
| Tritriacotane | 3.31 | 0.76 | 3.81 | 1.72 | 0.39 | 1.64 | 0.53 | 0.12 | 0.45 | 0.21 | 0.05 | 0.27 |
| Tetratriacotane | 0.35 | 0.10 | 0.38 | 0.18 | 0.05 | 0.24 | 0.04 | 0.01 | 0.10 | 0.11 | 0.03 | 0.21 |
| Pentatriacotane | 0.04 | 0.01 | 0.05 | 0.02 | 0.01 | 0.02 | 0.01 | 0.00 | 0.03 | 0.00 | 0.00 | 0.01 |
Note: This table was adapted from Sheesley et al. 2009.
Average indicates average of all job or area samples.
Unc indicates average analytical uncertainty for organic speciation.
SD indicates standard deviation of all job/area samples.
ND indicates not detected.