A protected radioactive source for electron capture and other gas chromatographic detectors

Abstract

By use of the technique decribed, ionisation detectors can be constructed in which there is no contact between the radioactive source and compounds eluted from the chromatograph column. This has advantages: 1. In electron capture detectors where it makes the use of radioactive materials other than tritium convenient. Higher operating temperatures may therefore be used. 2. In situations where eluted compounds might otherwise lead to deterioration of the radioactive source.