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Particle size distribution (Granulometry)

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Description of key information

Sample 1:

D10 = 2.74µm

D50 = 10.43µm

D90 = 36.65µm.

 

MMAD = 19.05 µm (airborne fraction), GSD = 2.75

 

Sample 2:

D10 = 2.42µm

D50 = 12.44µm

D90 = 51.53µm

MMAD = 27.93 µm (airborne fraction), GSD = 2.23

Additional information

Sample 1:

The median particle size D50 of the test item deduced from the particle size distributions is 10.43µm.

The particle size D10 of the test item deduced from the particle size distributions is 2.74µm.

The particle size D90 of the test item deduced from the particle size distributions is 36.65µm.

 

Total Dustiness (airborne fraction): 41.08 mg/g with a mass median aerodynamic diameter of airborne fraction: MMAD = 19.05 µm (cascade impactor), geometric standard deviation of MMAD: GSD = 2.75

 

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

Head (ET): 56.5%

Tracheobronchial (TB): 0.7%

Pulmonary (PU): 0.9%

 

Sample 2:

The median particle size D50 of the test item deduced from the particle size distributions is 12.44µm.

The particle size D10 of the test item deduced from the particle size distributions is 2.42µm.

The particle size D90 of the test item deduced from the particle size distributions is 51.53µm.

Total Dustiness (airborne fraction): 603.72 mg/g(experimental results, DMT Report).

 

Mass median aerodynamic diamater of airborne fraction: MMAD = 27.93 µm (distribution fitted to cascade impactor data).

Geometric standard deviation of MMAD: GSD = 2.23

 

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

Head (ET): 48.9%

Tracheobronchial (TB): 0.2%

Pulmonary (PU): 0.3%