US 9,810,606 B2
Methods and devices for vapor sampling
Stephen R. Houghton, Tully, NY (US); Marc P. Roberts, Alexandria, VA (US); and Robert M. Cannon, Clay, NY (US)
Assigned to SRC, Inc., North Syracuse, NY (US)
Filed by SRC, Inc., North Syracuse, NY (US)
Filed on Feb. 1, 2016, as Appl. No. 15/12,248.
Prior Publication US 2017/0219464 A1, Aug. 3, 2017
Int. Cl. G01N 1/00 (2006.01); G01N 1/22 (2006.01); G01N 21/65 (2006.01)
CPC G01N 1/2208 (2013.01) [G01N 21/65 (2013.01)] 14 Claims
OG exemplary drawing
 
1. An aerosol and vapor sampling device, comprising:
a sampling chamber comprising an inlet and an outlet and comprising an inner surface defining an inner volume;
a particle focusing nozzle comprising an elutriator column having an opening at a first end and an accelerator jet outlet at a second end opposite said first end, wherein the particle focusing nozzle is configured to admit a gas-aerosol sample at the opening and to vent the gas-aerosol sample into the sampling chamber via the jet outlet; and
a collection well positioned within the sample chamber to receive a portion of the gas-aerosol sample from the jet outlet, the collection well comprising a backing and a sidewall, wherein at least a portion of the backing is porous such that at least part of the received gas-aerosol sample may flow through the porous portion of the backing;
wherein the collection well is suspended approximately in the center of the inner volume of the sample chamber to define a gap between the sidewall of the collection wall and the inner surface of the sampling chamber;
wherein only a portion of the gas-aerosol sample from the particle focusing nozzle, being less than all of the gas-aerosol sample, enters the collection well, and the remainder of the gas-aerosol sample from the particle focusing nozzle enters the gap between the sidewall of the collection wall and the inner surface of the sampling chamber.