From: Dissolution and biodurability: Important parameters needed for risk assessment of nanomaterials
Nanoparticles | Conditions | Rate constants obtained from literature | Calculated half-time |
---|---|---|---|
Ag 4.8 nm | Citrate stabilized | 4.1 day−1 [52] | 0.169 days (4 hours) |
Ag 60 nm | Citrate stabilized | 0.74 day−1 [52] | 0.963 days (22.5 hours) |
Ag 4.8 nm | Citrate stabilized, in deionised water, at 0.05 mg/L total silver | 0.88 day−1 [52] | 0.79 days (18.9 hours) |
Ag 4.8 nm | Citrate stabilized in deionised water, at 0.2 mg/L total silver | 0.53 day−1 [33] | 1.3 days (31.4 hours) |
Ag 4.8 nm | Citrate stabilized in deionised water, at 2 mg/L total silver | 0.023 day−1 [33] | 30 days (723 hours) |
Ag 10.6 nm | Tris-HOAc buffer in 10 M H2O2 0.001 nM Ago | 0.128 day−1 [105] | 5.4 s |
Ag10.6 nm | Tris-HOAc buffer in 10 M H2O2 0.005 nM Ago | 0.122 s−1 [105] | 582 s |
TiO2 1 - 24.4 nm Industrial | In aqueous NaCl solutions at temperatures of 25 and 37°C - pH ranging between 3.0 and 3.3. | 3.3 × 10−2 h−1 [107] | 21 hours |