Table 4.
Silver content and size in selected liquid products.
| Product type | Total Ag ICP (mg/kg) |
Ionic Ag ISE (mg/L) |
DH diameter DLS (nm) |
Size by TEM/EDX (as Ag/AgCl; nm) |
Size by UV-vis (nm) |
|---|---|---|---|---|---|
| Disinfecting spray |
25.8 ± 1.0 (20 nominal#) |
7.7 ± 0.1 | 63.3 ± 1.1 | 5–30 (13.8 ± 0.4, average) NA |
390 |
| Spray cleaner | 24.4 ± 1.1 (30 nominal#) |
29.8 ± 0.6 | NA | NA | NA |
| Antibacterial spray |
19.3 ± 2.0 | 9.1 ± 1.2 | 107.3 ± 2.1 | 3–75 (18.5 ±9.4, average) |
400 |
| Antivirus spray |
ND | 70.0 ± 1.2 | 250.8 ± 4.9 | 10–30 | No peak |
| Dietary supplement |
29.0 ± 0.8 (20 nominal#) |
9.2 ± 0.2 | 54.9 ± 3.7 | 5–50 | 390 |
| Commercial silver nanoparticles |
17* (20 nominal#) |
ND | ND | 20 nm Ag |
400 |
NA, not applicable; ND, not determined.
*
Pilot study data, no replicates.
#
As reported by manufacturer.