Patent ID: 9335306
Filing Date: 2016-05-10
CPC Classification: G01N

Claim Text:
1. An apparatus for collecting semivolatile organic chemicals (SOCs) from an atmosphere, comprising: a housing having an inlet and an outlet; at least one diffusion denuder contained in the housing, the at least one diffusion denuder having a plurality of capillaries coated with a stationary phase for capturing gaseous semivolatile organic compounds (SOCs); and a hot gas spike apparatus connectable to the at least one diffusion denuder for introducing a compound into the at least one diffusion denuder, wherein the at least one hot gas spike apparatus comprises a cylindrical mixing chamber having a carrier gas inlet and a makeup gas inlet, wherein the carrier gas inlet is perpendicular to the makeup gas inlet, and the carrier gas inlet is tangential to a wall of the cylindrical mixing chamber.