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Table 2 Characteristics of particles and fibers by SEM/EDX

From: Analysis of particles from hamster lungs following pulmonary talc exposures: implications for pathogenicity

Particles or FibersCountPercentageGreatest Dimension - Length (μm) Ave ± SDAspect Ratio Ave
Particles by Morphology15678.0%7.3 ± 5.01.7
Fiber by Morphology Aspect ratio 3:1or >4422.0%13.1 ± 9.36.3
Asbestos by EDS00%00
Compositional Analysis
Talc by EDX MgSi wt% ratio 0.595–0.69510753.5%  
  Particles7772.0%9.2 ± 5.41.8
  Fibers - Aspect ratio 3:1or >3028.7%14.9 ± 9.86.7
MgSi by EDX but not talc by wt% ratio52.5%  
  Particles360.0%10.8 ± 6.01.4
  Fibers - Aspect ratio 3:1 or >240.0%7.9 ± 5.94.1
MgSi by EDX, but not talc by composition6030.0%  
  Particles5185.0%5.3 ± 4.01.7
  Fibers - Aspect ratio 3:1or >915.0%8.8 ± 6.36.3
Mg + Si + > 5% Ti, Al, or Ca2713.5%  
  Particles2488.9%5.5 ± 4.51.5
  Fibers - Aspect ratio 3:1or >311.1%11.7 ± 10.54.8
Mg + Si + > 5% Cr (particle)10.5%2.031.2