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Full-Text Articles in Medicine and Health Sciences
Mitsui-7, Heat-Treated, And Nitrogen-Doped Multi-Walled Carbon Nanotubes Elicit Genotoxicity In Human Lung Epithelial Cells, Katelyn J. Siegrist, Steven H. Reynolds, Dale W. Porter, Robert R. Mercer, Alison K. Bauer, David Lowry, Lorenzo Cena, Todd A. Stueckle, Michael L. Kashon, John Wiley, Jeffrey L. Salisbury, John Mastovich, Kristin Bunker, Mark Sparrow, Jason S. Lupoi, Aleksandr B. Stefaniak, Michael J. Keane, Shuji Tsuruoka, Mauricio Terrones, Michael Mccawley, Linda M. Sargent
Mitsui-7, Heat-Treated, And Nitrogen-Doped Multi-Walled Carbon Nanotubes Elicit Genotoxicity In Human Lung Epithelial Cells, Katelyn J. Siegrist, Steven H. Reynolds, Dale W. Porter, Robert R. Mercer, Alison K. Bauer, David Lowry, Lorenzo Cena, Todd A. Stueckle, Michael L. Kashon, John Wiley, Jeffrey L. Salisbury, John Mastovich, Kristin Bunker, Mark Sparrow, Jason S. Lupoi, Aleksandr B. Stefaniak, Michael J. Keane, Shuji Tsuruoka, Mauricio Terrones, Michael Mccawley, Linda M. Sargent
Lorenzo Cena
Background: The unique physicochemical properties of multi-walled carbon nanotubes (MWCNT) have led to many industrial applications. Due to their low density and small size, MWCNT are easily aerosolized in the workplace making respiratory exposures likely in workers. The International Agency for Research on Cancer designated the pristine Mitsui-7 MWCNT (MWCNT-7) as a Group 2B carcinogen, but there was insufficient data to classify all other MWCNT. Previously, MWCNT exposed to high temperature (MWCNT-HT) or synthesized with nitrogen (MWCNT-ND) have been found to elicit attenuated toxicity; however, their genotoxic and carcinogenic potential are not known. Our aim was to measure the genotoxicity …
Assessment Of Exposure To Composite Nanomaterials And Development Of A Personal Respiratory Deposition Sampler For Nanoparticles, Lorenzo Cena
Lorenzo Cena
The overall goals of this doctoral dissertation are to provide knowledge of workers' exposure to nanomaterials and to assist in the development of standard methods to measure personal exposure to nanomaterials in workplace environments.
To achieve the first goal, a field study investigated airborne particles generated from the weighing of bulk carbon nanotubes (CNTs) and the manual sanding of epoxy test samples reinforced with CNTs. This study also evaluated the effectiveness of three local exhaust ventilation (LEV) conditions (no LEV, custom fume hood and biosafety cabinet) for control of exposure to particles generated during sanding of CNT-epoxy nanocomposites. Particle number …