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Fig. 1 | Particle and Fibre Toxicology

Fig. 1

From: Mitsui-7, heat-treated, and nitrogen-doped multi-walled carbon nanotubes elicit genotoxicity in human lung epithelial cells

Fig. 1

Physicochemical analysis of each MWCNT material. Electron micrographs of MWCNT-7 (a & b), HT (c & d), and ND (e & f). g EDS spectrum showing iron-rich catalyst contamination in the MWCNT-ND material. The copper in the spectrum is from the copper TEM grid. h DF-STEM image of a MWCNT-ND with red arrow pointing to iron-rich catalyst material. i & j Unique Raman spectra for each MWCNT material, D, G, and G’-bands. Magnification bar is 60 nm for a, c, & e. Magnification bar is 800 nm for b, d, & f

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