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Table 1 Nanoparticle concentrations and MMAD values during 90-day exposure

From: Effects from a 90-day inhalation toxicity study with cerium oxide and barium sulfate nanoparticles in rats

  CeO2 NM-212 BaSO4 NM-220
NP concentration, required (mg/m3) 0.1 0.3 1.0 3.0 50.0
NP concentration, measured (mg/m3 ± SD)a 0.12 ± 0.04 0. 33 ± 0.09 1.06 ± 0.16 3.04 ± 0.30 48.82 ± 4.52
MMAD (μm ± GSD)b 0.71 ± 3.59 0.63 ± 3.83 0.68 ± 4.23 0.79 ± 3.50 2.95 ± 2.43
  1. a n = 78 exposure days; b n = 3