Figure 4
From: Sampling Techniques on Collecting Fine Carbon Nanotube Fibers for Exposure Assessment
Airborne particle/fiber concentrations and sizes measured by direct reading instruments, (a) Average total particle number concentrations during 40 min experiment with nanoscan SMPS data (10–420 nm) referring to the left y-axis and OPS data (300–10000 nm) referring to the right y-axis, (b) Particle average concentrations and size distributions during 15 min sampling period, (c) Cumulative particle count probability of nanoscan SMPS data, (d) Cumulative particle count probability of OPS data.
