Method and apparatus for sampling gaseous components in a gaseous stream, in particular in diluted exhaust gases of an internal combustion engine.

摘要

Taking samples from a gas stream comprises passing the gas stream through sampling pathways (26, 26a) containing an adsorbent capable of trapping polycyclic aromatic hydrocarbons in gaseous form. An independent claim is also included for apparatus for taking samples from a gas stream, comprising a sampling unit (10) equipped with sampling circuits (22, 22a) comprising cartridges (34, 52) containing an adsorbent capable of trapping polycyclic aromatic hydrocarbons in gaseous form.