Skip to main content
. Author manuscript; available in PMC: 2020 Jul 26.
Published in final edited form as: Inhal Toxicol. 2019 Jul 26;31(5):192–202. doi: 10.1080/08958378.2019.1643955

Table 1.

Bulk MWCNT characterization data.

Physicochemical Parameter Measurement Testing Location
Average Diameter (TEM) 16 nm (n=300) EMSL Analytical, Inc. (Cinnaminson, NJ)
Average Length (TEM) 849 nm (n=300) EMSL Analytical, Inc. (Cinnaminson, NJ)
Average Length (SEM) 2.4 μm (n=105) Battelle Columbus Operations (Columbus, OH)
Purity (TGA) 98% Battelle Columbus Operations (Columbus, OH)
Elemental Analysis
C (Combustion) 96% Galbraith Laboratories (Knoxville, TN)
H (Combustion) 0.6% Galbraith Laboratories (Knoxville, TN)
N (Combustion) < 0.5% Galbraith Laboratories (Knoxville, TN)
S (Combustion) < 0.05% Galbraith Laboratories (Knoxville, TN)
Ni (NAA) 0.52% Elemental Analysis Inc (Lexington, KY)
Surface Composition
C (XPS) 95% EMSL Analytical, Inc. (Cinnaminson, NJ)
O (XPS) 4.4% EMSL Analytical, Inc. (Cinnaminson, NJ)
BET Average Surface Area 172 m2/g Micromeritics Analytical Services (Norcross, GA)
Skeletal Density (helium gas picnometry) 2.13 g/cm3 Micromeritics Analytical Services (Norcross, GA)
Zeta Potential (electrophoretic velocity, H2O) −18 mV Micromeritics Analytical Services (Norcross, GA)