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Particle size distribution (Granulometry)

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Description of key information

Zinc iron chromite brown spinel: MMAD=89.90µm, GSD=8.08
Zinc iron chromite brown spinel: D50 = 1.4 µm

Additional information

Total Dustiness (airborne fraction): 23.51mg/g (experimental results, DMT Report).

Mass median aerodynamic diamater of airborne fraction: MMAD=89.90µm (distribution fitted to cascade impactor data). Geometric standard deviation of MMAD: GSD=8.08

Fractional deposition in human respiratory tract (MPPD model, based on calculated MMAD):

Head (ET): 35.0%

Tracheobronchial (TB): 0.3%

Pulmonary (PU): 0.7%

Particle size analysis by laser diffraction

d50 = 1.4 µm

d90 = 2.8 µm

d10 = 0.7 µm

(All values were calculated assuming that the particles are spherical)