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Particle number and respirable mass concentrations observed during the weighing and sanding processes. N represents the number of data points logged by the instruments during one run.
| a. Number Concentration | ||||
|---|---|---|---|---|
|
| ||||
| Process | N |
GM
#/cc |
GSD | P/B Ratio |
| Weighing | 300 | 166 | 1.08 | 1.06 |
| Sanding | 100 | 3889 | 1.48 | 1.04 |
|
| ||||
| b. Respirable Mass Concentration | ||||
|
| ||||
| Process | N |
GM
μg/m3 |
GSD | P/B Ratio |
|
| ||||
| Weighing | 51 | 0.03 | 3.50 | 1.79 |
| Sanding | 130 | 2.68 | 6.57 | 5.90 |
