Table 2: Particle concentrations measured during TiO2 synthesis.

Main set ()Subset ()Ratio (/)

Background
 OPC (particles/cm3)717.3 ± 14.0828.5 ± 15.20.87
 OPC (μg/m3)49.6 ± 1.157.6 ± 1.10.86
 NAM (μm2/cm3)50.1 ± 2.453.4 ± 2.00.94
 Discmini (particles/cm3)
Flame synthesis task
 OPC (particles/cm3)1,332.6 ± 188.1918.2 ± 13.91.50
 OPC (μg/m3)116.4 ± 18.477.3 ± 5.21.45
 NAM (μm2/cm3)3,930.2 ± 243.272.3 ± 5.054.3
 Discmini (particles/cm3)2 × 106104200