Table 2.
Mean and range of welding fume characterization parameters as measured during the 60 min welding task at the BZ of the volunteer
| Variable | Mean | Range |
|---|---|---|
| PNC (particles/cm3) | 1.69E + 06 | 8.69E + 05–3.85E + 06 |
| GMD (nm) | 45 | 29–108 |
| Gravimetric mass PM4 (mg/m3) | 0.716 | 0.25–2.29 |
| ROS production potential (nmol/m3) | 16.89 | 0.53–31.2 |
| Elements (mg/m3): | ||
| Al | 0.386 | 0.03–1.233 |
| W | 0.205 | 0.012–0.684 |
| Si | 0.074 | 0.007–0.201 |
| Na | 0.019 | 0–0.049 |
| Mg | 0.015 | 0–0.029 |
| Ce | 0.007 | 0.001–0.018 |
| Fe | 0.006 | 0.002–0.015 |
Elements reported represent the top most abundant elements present on filters collected at the BZ (w/w concentration >1 %)