Table 2.
Total PAHs, Σ6PAHs, BaP, and pyrene concentrations (ppm) measured in dust collected in the experimental chamber by wood type and operation.
| n | Total PAHs | Σ6PAHs | BaP | Pyrene | |||||
|---|---|---|---|---|---|---|---|---|---|
| GM (GSD) | Diff | GM (GSD) | Diff | GM (GSD) | Diff | GM (GSD) | Diff | ||
| Operationa | p < 0.0001 | p = 0.001 | p = 0.005 | p = 0.002 | |||||
| Sawing (A) | 9 | 0.77 (1.83) | C | 0.10 (2.33) | C | 0.06b (1.39) | C | 0.26 (1.38) | C |
| Belt sanding (B) | 9 | 0.69 (3.87) | C | 0.12 (4.55) | C | 0.11b (2.56) | 0.16 (3.52) | C | |
| Vibration sanding (C) | 9 | 3.39 (2.81) | A,B | 0.84 (2.49) | A,B | 0.10 (2.75) | A | 0.78 (2.62) | A,B |
n, number of samples; GM, geometric mean; GSD, geometric standard deviation; Diff, significantly different (Holm's multiplicity adjustment) GMs for the operations are indicated with the letters: A, sawing; B, belt sanding; C, vibration sanding.
a
The following wood types were included fir, oak and wood melamine.
b
Six of nine samples were non-detects.