Radiation from an ultraviolet
lamp ionizes certain species in the
carrier gas. A potential difference is applied and the resulting
ionization current is detected. The detector is only useful for substances with
ionization potentials below about
.
This makes it quite useful for detecting one component of a combined
eluent when the other component, for instance nitrogen, has a high
ionization potential. The detector has a small linear dynamic range and is capable of detecting substances below
.
Source:
PAC, 1990, 62, 2167
(Glossary of atmospheric chemistry terms (Recommendations 1990))
on page 2191
Cite as:
IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A.Wilkinson. Blackwell Scientific Publications, Oxford (1997). XML on-line corrected version: http://goldbook.iupac.org (2006-) created by M. Nic, J. Jirat, B. Kosata; updates compiled by A. Jenkins. ISBN 0-9678550-9-8.
doi:10.1351/goldbook.
