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Table 2 Fibre counting by electron microscopy

From: ROS-mediated genotoxicity of asbestos-cement in mammalian lung cells in vitro

Sample

Suspension

WHO-fibre counts

TEM

 

mg/ml

Filter deposit

 

F/mg

F/ml

Magnification, Number of fields

 

Original

Diluted

μg/cm2

n

×106

×106

 

Asbestos cement

11

0.05

73.2

14

38.3

425

×10000, 10 fields

    

34

12.9

144

×2000, 2 fields

UICC-chrysotile

5

0.01

13.2

32

486

2432

×10000, 10 fields

    

33

139

697

×2000, 1 field