| 摘要 |
<p>Apparatus for detecting gas in a sample gas in a carrier gas stream and including a windowless ionization detector having a pulsed power supply which is switchable at a rate which provides a pulse period shorter than the transit time of ions to be detected to the collector electrode of an ionization chamber of the detector. Switching allows any signal due to ion detection to be separated from background noise due to other effects in the chamber.</p> |
