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Table 1 Silica particle characterization

From: Differences in gene expression and cytokine production by crystalline vs. amorphous silica in human lung epithelial cells

Silica Particle

Chem. Comp.

% Purity

S.A. (m2/g)a

Mean size (μm)b

Particles/mg

Source

Cristobalite

SiO2

*95.5 ± 0.03

5.1

2.16 ± 2.00

-

C&E Mineral Corp, King of Prussia, PA

Amorphous

SiO2

> 99

2.2

3.55 ± 0.45

20.33 × 106

University of Vermont, Dept. of Chemistry

  1. Table 1 summarizes silica particle characterization of cristoablaite and amorphous silica particles.
  2. a S.A. = Surface area/mass (m2/g).
  3. b Mean particle diameter ± standard deviation
  4. * Sample contains traces of quartz (4.54 ± 0.08%)