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Table 1 Physicochemical characterization of nanoparticles

From: Response-metrics for acute lung inflammation pattern by cobalt-based nanoparticles

Measure Co3O4 CoO
Primary size (nm) 20.2 ± 0.4 65.4 ± 2.8
Hydrodynamic size (nm)   
in DW 93.4 ± 1.8 380.3 ± 14.4
in PBS 468.9 ± 24.3 449.1 ± 8.9
Polydispersity   
in DW 0.18 ± 0.03 0.72 ± 0.02
in PBS 0.26 ± 0.02 0.69 ± 0.05
Surface area (m2/g) 35.8 8.5
Zeta potential (mV)   
in DW 39.53 ± 0.72 6.99 ± 1.18
in PBS (pH 7.4) −26.40 ± 0.90 −21.80 ± 0.45
Solubility (%) in ALF 11.46 92.65
Solubility (%) in PBS 0.02 4.12
Endotoxin ND ND
  1. Data were presented as mean ± SEM
  2. ND, not detected