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Eight- hour Average Particulate Concentrations of Welding Fume.
| Sample No | Particulate Concentration (mg/m3) | |||||
|---|---|---|---|---|---|---|
| Factory 1 | Factory 2 | Factory 3 | Factory 4 | Factory 5 | Factory 6 | |
| 1 | 11.0 | 4.0 | 13.0 | 6.0 | 9.5 | 3.5 |
| 2 | 15.5 | 3.0 | 4.5 | 6.0 | 2.0 | 2.5 |
| 3 | 5.0 | 10.5 | 17.0 | 5.5 | 4.0 | 2.5 |
| 4 | 5.0 | 7.5 | 4.0 | 6.0 | 3.0 | 3.0 |
| 5 | 5.5 | 5.0 | 7.0 | 4.5 | 10.5 | 2.0 |
| 6 | 4.0 | 5.0 | 24.0 | 8.0 | 13.0 | 1.5 |
| 7 | 5.0 | 3.5 | 3.0 | 7.0 | 1.5 | 4.5 |
| 8 | 8.0 | 7.0 | 3.0 | 12.0 | 1.0 | 3.5 |
| 9 | 2.0 | 4.0 | 13.5 | 8.0 | 1.0 | 3.5 |
| 10 | 2.0 | 3.5 | 24.0 | 5.0 | 1.5 | 3.5 |
