Carbon Black Particle Exhibits Size Dependent Toxicity in Human Monocytes

Table 2

Particle characterization.

Particles	Description	Average size^a	Size using TEM^b (nm)	Size in media^c (nm)	PDI^d	Zeta potential^e (mV)
Nanocarbon	Carbon nanopowder	<50 nm	53.7±10.2	235.5±24.9	0.005±0.001	−39.9±4.91
Microcarbon	Carbon	~500 nm	524.9±8.1	636.7±17.2	0.074±0.008	−15.6±6.37

aAccording to the manufacturer Sigma-Aldrich.
^bUsing transmission electron microscopy.
^{c,d, and e}Using ZetaPALS.
PDI: polydispersity index.