Table A.3. Personal measurements–concentration of respirable fraction and comparison with the exposure reference limits.
| Metal | Printer | Printing process | Median [μg/m3] |
Ranges of measured values [μg/m3] |
Exposure reference limits [μg/m3] | Ratio Max value/Reference limits [%] |
| Cr | PV_SLM | SLM | 0.038 | 0.007–0.068 | ACGIH=500 OSHA=1,000 NIOSH=500 |
0.007–0.014 |
| MI_SLM | SLM | 0.091 | 0.034–0.149 | 0.010–0.030 | ||
| MI_LMD | LMD | 0.021 | 0.014–0.114 | 0.011–0.023 | ||
| NE_SLM/NE_HYB | SLM | 0.5 | 0.020–0.180 | 0.018–0.036 | ||
|
| ||||||
| Co | PV_SLM | SLM | 0.206 | 0.008–0.404 | ACGIH=20 OSHA=100 NIOSH=50 |
0.404–2.020 |
| MI_SLM | SLM | 0.117 | 0.087–0.147 | 0.147–0.735 | ||
| MI_LMD | LMD | 0.043 | 0.031–0.260 | 0.520–1.30 | ||
| NE_SLM/NE_HYB | SLM | 0.039 | 0.014–0.064 | 0.064–0.32 | ||
|
| ||||||
| Ni | PV_SLM | SLM | 0.013 | 0.010–0.015 | ACGIH=1,500 OSHA=1,000 |
0.001–0.002 |
| MI_SLM | SLM | 0.639 | 0.443–0.836 | 0.056–0.084 | ||
| MI_LMD | LMD | 0.466 | 0.190–1.129 | 0.075–0.113 | ||
| NE_SLM/NE_HYB | SLM | 0.179 | 0.012–0.201 | 0.013–0.020 | ||
|
| ||||||
| Fe | PV_SLM | SLM | 0.431 | 0.050–0.813 | No limits available | – |
| MI_SLM | SLM | 0.016 | 0.015–0.018 | – | ||
| MI_LMD | LMD | 0.009 | 0.006–0.050 | – | ||
| NE_SLM/NE_HYB | SLM | 0.3 | 0.015–0.444 | – | ||
|
| ||||||
| Cu1 | NE_SLM/NE_HYB | SLM | 0.041 | 0.003–0.159 | ACGIH=1,000 OSHA=1,000 NIOSH=1,000 |
0.016 |