From: Persistence of tungsten oxide particle/fiber mixtures in artificial human lung fluids
 | As Received | Dispersed | Mixture with Cobalt | |||
---|---|---|---|---|---|---|
Powder | t 1/2 (days) | k [g/(cm 2 ·day)] | t 1/2 (days) | k [g/(cm 2 ·day)] | t 1/2 (days) | k [g/(cm 2 ·day)] |
WO3 | 9893 ± 2549 | 9.8 ± 2.9 × 10-9 | 21541 ± 1890 | 4.3 ± 0.4 × 10-9 | 8052 ± 2458 | 1.1 ± 0.4 × 10-8 |
WO2.98 | 656 ± 154 | 9.9 ± 2.6 × 10-9 | 929 ± 45 | 6.8 ± 0.3 × 10-9 | 655 ± 72 | 9.6 ± 1.0 × 10-9 |
WO2.81 | 2218 ± 84 | 1.1 ± 0.0 × 10-8 | 2207 ± 144 | 1.1 ± 0.1 × 10-8 | 2084 ± 102 | 1.2 ± 0.1 × 10-8 |
WO2.66a | 181 ± 7 | 2.6 ± 0.1 × 10-7 | 214 ± 6 | 2.2 ± 0.1 × 10-7 | 218 ± 17 | 2.1 ± 0.2 × 10-7 |
WO2.51 | 2455 ± 422 | 1.4 ± 0.2 × 10-8 | 2915 ± 414 | 1.1 ± 0.2 × 10-8 | 1343 ± 252 | 2.5 ± 0.5 × 10-8 |
W | 97 ± 17 | 1.1 ± 0.2 × 10-6 | --b | -- | -- | -- |