Patent ID: 9084958
Filing Date: 2015-07-21
Classification: B01D,G01N

Abstract:
1. A collection device, comprising: a membrane denuder, wherein the membrane denuder is a flexible fabric porous structure that includes at least one chemical composition that collects at least one type of gas; and a filter pack, wherein the filter pack collects aerosol particles that pass through the membrane denuder, wherein the membrane denuder is disposed on top of the filter pack so that the air flow of the gas into the device passes through the membrane denuder before contacting the filter pack an impactor disposed on the membrane denuder on the side opposite the filter pack so that the gas passes through the impactor before contacting the membrane denuder, and wherein the impactor removes large aerosol particles; and wherein the membrane denuder includes porous walls that are parallel to the air flow and perpendicular to the filter pack.