Skip to main content
. 2022 Dec 21;13(1):26. doi: 10.3390/nano13010026

Table 1.

Dissolved metal separation details for each metal-oxide ENM and media. Times used for undissolved particle separation by sequential centrifugation at 20,000× g (60 min/90 min represent 2×/3× 30 min) and element wavelengths used for dissolved metal fraction quantification for ICP-OES analysis.

Media Time n ZnO MnO2 CeO2 Al2O3 Fe2O3
100
mg/L
10
mg/L
100
mg/L
10
mg/L
100
mg/L
10
mg/L
100
mg/L
10
mg/L
100
mg/L
10
mg/L
Water 0 h 3 90 min 90 min 90 min 90 min 90 min 90 min 90 min 90 min 90 min 90 min
pH = 6.4 ± 0.5 24 h 3
48 h 3
DMEM + 2% FBS 0 h 3 90 min 90 min 90 min 90 min 90 min 90 min 60 min 60 min 90 min 90 min
pH = 7.6 ± 0.1 24 h 3
48 h 3
PSF 0 h 3 60 min 60 min 90 min
pH = 4.5 ± 0.02 24 h 3
Gamble 0 h 3 60 min 60 min 60 min
pH = 7.5 ± 0.1 24 h 3
Element, wavelength (ICP-OES) Zn 213.857 nm Mn 257.610 nm Ce 418.659 nm Al 396.152 nm Fe 238.204 nm