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Table 1 Size characterization of freshly prepared TiO2 stock suspensions (2.56 mg/mL)

From: Agglomeration of titanium dioxide nanoparticles increases toxicological responses in vitro and in vivo

Stock
suspensions
TEM DLS PTA
Median
ECD (nm)
Mean
ECD (nm)
Mean
Feret min (nm) ± SD
Z-average (nm) Mean hydrodynamic size (nm)
17 nm-SA 18 100 33 ± 2 600 134
17 nm-LA 127 200 120 ± 19 900 207
117 nm-SA 122 250 148 ± 10 280 259
117 nm-LA 352 500 309 ± 64 580 221
  1. Median and mean equivalent circle diameter (ECD) and mean feret minimum (feret min) measured by transmission electron microscopy (TEM), Z-average (mean hydrodynamic size) by dynamic light scattering (DLS) and mean hydrodynamic size by particle tracking analysis (PTA)
  2. SD standard deviation