Question

Which of the following detector uses ultraviolet radiation from lamps to produce ionisation of solute molecules?

(a) Sulphur chemiluminescense detector

(b) Thermal conductivity detector

(c) Photo ionization detector

(d) Electron capture detector

I have been asked this question in an internship interview.

I would like to ask this question from Detection System of Gas Chromatography in section Chromatography of Analytical Instrumentation

Answer 1

Correct choice is (c) Photo ionization detector

To explain I would say: Photo ionization detector uses ultraviolet radiation from lamps to produce ionisation of solute molecules. The current produced is measured and recorded.