Abstract
Deposition of particles in sampling lines may occur due to inertial, electrostatic, or diffusional forces among others. Very
small particles such as those in the nanoscale1, are not susceptible to losses from inertial deposition.2 Electrical effects are
reportedly controlled by the use of conductive tubing.2 Particle losses from Brownian diffusion affect both particle size
distribution and number concentration. Selectively removing the smallest particles has the effect of increasing the
statistical measures of particle size; mean, median, geometric mean, mode, while decreasing number concentration and
geometric standard deviation. These losses if quantified can be used to interpret or correct the data.3,4
Sample loss from either a rigid graphitic or flexible Tygonâ„¢ tube attached to a Scanning Mobility Particle Sizerâ„¢ inlet
was investigated as part of the routine sampling process at the Center for Nanophase Materials Sciences. Mean
concentrations and particle size parameters determined from samples collected with and without sample inlet extensions of
both types were compared. No losses or changes in aerosol size distribution parameters that required correction were
found for either material at lengths of ~0.7m.
