Table 3 Characterization of generated PbO NPs (2nd experiment)

Number concentration

1.64 × 10⁶ NPs/cm³

Surface area

6.14 × 10⁹ nm²/cm³

Mode

31.1 nm

Geometric mean diameter

26.6 nm

Geometric standard deviation

1.70

Mass concentration

75.5 µg PbO/m³

Estimated deposited dose (after 9 w)

0.697 µg PbO/g

Estimated deposited dose (after 6 w)

0.465 µg PbO/g