Figures & data
FIG. 1 Experimental Setup of APS and IJAG. The stream of particles generated by the IJAG was introduced to the APS via a funnel-shaped flow adaptor.
FIG. 2 Droplet formation from an IJAG. The liquid was a 0.1% suspension (m/v) of Bacillus atrophaeus spores, which are about 1 μm diameter, in water. The primary droplets are 67 μm diameter primary droplet and the satellites are about ¼ that size. Initial velocity of the liquid jet is about 5 m/s.
FIG. 3 Aerodynamic fractionator used in the IJAG to separate satellites from the primary droplets.
FIG. 4 IJAG aerodynamic fractionator effectiveness. (a) Number-size histogram of with no air flow in counter flow nozzle. (b) Histogram with counter flow nozzle in operation.
FIG. 5 Adaptor used to couple an IJAG and an APS. Sheath air flow passes through a slot milled into the wall of the adaptor.
FIG. 6 Relative detection efficiency of a TSI Model 3321 APS as a function of particle size for solid spherical NaOH particles and liquid Tween-80 droplets generated with an IJAG at a rate of 75 s–1. Error bars represent ±1 standard deviation about the mean value and 6–8 replicate tests were conducted at each particle size. The dashed horizontal line is 100% relative detection efficiency.
FIG. 7 Relative detection efficiency of a TSI Model 3321 APS as a function of IJAG particle generation rate for solid 7.0 μm AD NaOH particles. The solid line is a least squares regression line and the dashed line is 100% relative detection efficiency.
