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Diss Factsheets

Physical & Chemical properties

Particle size distribution (Granulometry)

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Reference
Endpoint:
particle size distribution (granulometry)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
comparable to guideline study with acceptable restrictions
Qualifier:
equivalent or similar to guideline
Guideline:
other: draft ISO/DIS 21363 "Nanotechnologies - Measurements of article size and shape distributions by transmission electron microscopy"
GLP compliance:
no
Type of method:
other: transmission electron microscopy
Type of particle tested:
primary particle
Key result
Percentile:
D90
Mean:
0.556 µm
Remarks on result:
other: Dw=0.318µm, Dmode=0.264µm, Std.Dev.: 0.166µm
Key result
Percentile:
D50
Mean:
0.279 µm
Remarks on result:
other: Dw=0.318µm, Dmode=0.264µm, Std.Dev.: 0.166µm
Key result
Percentile:
D10
Mean:
0.143 µm
Remarks on result:
other: Dw=0.318µm, Dmode=0.264µm, Std.Dev.: 0.166µm

Description of key information

D10: 0.143 μm
D50: 0.279 μm
D90: 0.556 μm
Std.Dev.: 0.166 μm
Fraction less than 100 nm: < 2.0 %
Length / width ratio:
Whole sample: 5.05 : 1
Fine sized fraction: 3.41 : 1
Middle fraction: 5.06 : 1
Coarse fraction: 6.63 : 1
Particle shape: Rectangular or cuboid elongated shape.
Particle edges are mainly rectangular and slightly rounded in places.

Additional information