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Table 1 Overview of samples and average data on key physical chemical characteristics

From: Epoxy composite dusts with and without carbon nanotubes cause similar pulmonary responses, but differences in liver histology in mice following pulmonary deposition

Sample code NRCWE ID number Product form Particle sizea BET specific surface area Total pore volume TGA mass loss Main elemental impurities ng endotoxin/mg particlec
CNT NRCWE-026 Powder 11 ± 4 nm (diameter)
4+/− 0.4 μm (length)
246 m2/g 0.80 cm3/g 87 % Al, Fe, Cob BD
EPOXY-REF NRCWE-034 Sanding dust ND 4.53 m2/g 0.005 cm3/g 99 % ND 3.43E-05
EPOXY-CNT NRCWE-035 Sanding dust ND 2.45 m2/g 0.003 cm3/g 99 % ND 4.12E-06
EPOCYL NRCWE-036 Sanding dust ND 2.65 m2/g 0.003 cm3/g 99 % ND BD
CB   Powder 14 nmd 295−338 m2/ge ND ND N (0.82 %), H(0.01 %)e 3.33E-03
  1. ND not determined, BD below detection limit
  2. aAverage particle dimensions by SEM; bMain elemental impurities as determined by ICP-MS [6]; cEndotoxin content in particles/dust determined by Limulus Amebocyte Lysate test; dAccording to manufacturer’s data; e [26] and [27]