Characterization of MWCNT-7 Nanotubes

The MWCNT used in this study were obtained from Hodogaya Chemical Company (MWCNT-7, lot #061220-31) and have been previously described (Sargent, et al., 2014 (link)). Briefly, the MWCNT were manufactured using a floating reactant catalytic chemical vapor deposition method, followed by high temperature thermal treatment in argon at 2500°C using a continuous furnace as previously described (Kim, et al., 2005 ). The bulk material was characterized by a high-resolution transmission electron microscopy (TEM) under a Philips CM 20 TEM with an EDS (EDAX/4p1) as previously described (McKinney, et al., 2009 (link)). MWCNT trace metal contamination was 1.32%, with iron being the major trace metal contaminant (1.06%) (Porter, et al., 2013 (link)).

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Snyder-Talkington B.N., Dong C., Sargent L.M., Porter D.W., Staska L.M., Hubbs A.F., Raese R., McKinney W., Chen B.T., Battelli L., Lowry D.T., Reynolds S.H., Castranova V., Qian Y, & Guo N.L. (2015). mRNAs and miRNAs in whole blood associated with lung hyperplasia, fibrosis, and bronchiolo-alveolar adenoma and adenocarcinoma following multi-walled carbon nanotube inhalation exposure in mice. Journal of applied toxicology : JAT, 36(1), 161-174.

Publication 2015

CM 20 TEM

Argon Bulk Catalytic High temperature Iron Metal Transmission electron microscopy

Corresponding Organization : West Virginia University

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Variable analysis

independent variables

Manufacturer of MWCNT: Hodogaya Chemical Company
MWCNT type: MWCNT-7
MWCNT lot number: 061220-31
MWCNT manufacturing method: floating reactant catalytic chemical vapor deposition, followed by high temperature thermal treatment in argon at 2500°C using a continuous furnace

dependent variables

Not explicitly mentioned

control variables

MWCNT trace metal contamination (1.32%, with iron being the major trace metal contaminant (1.06%))
Characterization of bulk MWCNT material by high-resolution transmission electron microscopy (TEM) and energy-dispersive X-ray spectroscopy (EDS)

positive controls

Not explicitly mentioned

negative controls

Not explicitly mentioned

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