Genes expression profiling of alveolar macrophages exposed to non-functionalized, anionic and cationic multi-walled carbon nanotubes shows three different mechanisms of toxicity

Table 1 Dispersion conditions and MWCNT properties provided by supplier (a) and measured using DLS (b), in addition to purity retrieved from literature (c) [29]

Name	MWCNT type	Length^a (nm)	Diameter^a (nm)	Specific surface^a (cm²/cm)²	Probe (mm)	Amplitude	Time (min)	Z-average^b (nm)	Zeta potential	Pdi^b	Purity (%)^c
NM403	Pristine	400	12	135	11	10	15	217.2 ± 70.3	− 13.005 ± 0.025	0.383 ± 0.013	> 90
NRCWE-042	Functionalized –COOH	723	21	141	5	30	15	210.5 ± 45.2	− 28.125 ± 0.307	0.279 ± 0.019	> 95
NRCWE-049	Functionalized –NH₂	731	14	199	5	30	20	210.4 ± 81.3	+ 7.021 ± 0.563	0.466 ± 0.025	> 99

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