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Table 2 Dissolution half-times of nanoparticles calculated from k dis

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