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Table 1 Measured parameters of airborne ZnO nanoparticles

From: Concentration-dependent systemic response after inhalation of nano-sized zinc oxide particles in human volunteers

Target concentration Measured concentration Mobility particle diameter Geometric standard deviation Particle number concentration
[mg/m3] [mg/m3] [nm] [GSD] [#/cm3]
0.0 0.016 (+/−  71.8%) <  500
0.5 0.514 (+/− 2.4%) 47.8 (+/−  2.4%) 1.66 1.69E + 06 (+/−  3.5%)
1.0 1.013 (+/−  1.1%) 62.8 (+/−  2.7%) 1.68 2.03E + 06 (+/−  4.1%)
2.0 2.014 (+/−  1.2%) 85.8 (+/−  4.0%) 1.69 2.53E + 06 (+/−  9.2%)