APPARATUS FOR SAMPLING AND ANALYSIS OF THERMALLY-LABILE SPECIES AND A METHOD RELATING THERETO

摘要

An apparatus for, and a method of, sampling and analyzing thermally-labile chemical species, comprises a quartz tube having a filter member positioned in the bo re of the tube. The filter, member comprises a plug of quartz beads having a layer of quartz frits on either side. A fluid (gas or liquid) carrying one or more chemical substances associated with particulate matter is passed through the tube, th e particulate material being collected by the quartz beads. After sample collection, the material remaining/retained from the original sample is removed, as for example by thermal desorption, and the material is then analyzed.