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. 2021 Nov 27;11(12):3225. doi: 10.3390/nano11123225

Table 1.

Physicochemical characteristics of the tested engineered nanoparticles (ENP) stock suspensions.

ENP Hydrodynamic Size (nm) Concentration
(Number of Particles/mL)
Oxidative Potential
(A.U.) *
Effective Density
(mg/mL)
SnO2 455.5 ± 17.98 2.70 × 108 4958 6.7
ATO 688.5 ± 97.80 12.28 × 108 4081 17.4
CeO2 305.6 ± 79.72 8.07 × 108 4806 1.5
ZrO2 406.0 ± 1.79 22.05 × 108 3408 3.5

Data are presented as mean ± SD. Hydrodynamic size was measured by Dynamic Light Scattering (DLS). Concentration was determined by Nanoparticle Tracking Analysis (NTA). Oxidative potential was measured by Electronic Spin Resonance (ERS). A.U.: arbitrary units. * Negative control (ultrapure water) = 3191 A.U.; Positive control (DOFA) = 48,041 A.U.