Preferred Label : photoionization detector;
Detailed label : photoionization detector in gas chromatography;
IUPAC definition : 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 11 eV. 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 1 ppmv.;
Origin ID : P04621;
See also
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 11 eV. 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 1 ppmv.
