Synergistic effect of co-exposure to carbon black and Fe2O3 nanoparticles on oxidative stress in cultured lung epithelial cells

Table 1 Total iron contents in cell culture medium samples

Samples	Single exposure spent medium	Co-exposure spent medium	Medium spiked with Fe₂O₃	Pristine medium
Total iron content in medium (μg) *	0.84 ± 0.07	0.70 ± 0.07	3.36 ± 0.07	1.26 ± 0.07
Inferred cellular iron uptake (μg) **	2.52 ± 0.14	2.66 ± 0.14	NA	NA

* The uncertainty value only reflects the instrument uncertainty.
** Obtained by subtracting the iron in the spent medium from that in the medium spiked with Fe₂O₃.

ISSN: 1743-8977