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Initial lung burdens of TiO 2
| Exposure type | Whole body inhalation | Intratracheal instillation |
|---|---|---|
|
Single low dose (μg) |
44.56 ± 2.85 |
39.24 ± 1.04 |
|
Single high dose (μg) |
170.25 ± 9.15 |
163.58 ± 3.84 |
| Repeated high dose (μg) | 197.89 ± 8.89 | 179.61 ± 17.14 |
Values are group means (n = 3–5) of NP mass doses (μg) ± standard deviation (SD) immediately following instillation and 4 hr inhalation exposures.
