Figure 1From: Carbon nanotube dosimetry: from workplace exposure assessment to inhalation toxicology Inhalable elemental carbon (EC) concentrations at eight MWCNT facilities. The mean, with error bars representing the upper and lower range, of measured EC concentration (μg/m3) with background correction. The figure was adapted from data previously published, sites A, C-F [23], while including 3 additional sites, L, J, and O. The studied sites were identified in a manner to be consistent with nomenclature of specific sites. For example, site B was a single-walled carbon nanotube facility and therefore excluded.Back to article page