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Journal of Lipid Research, Vol. 3, 364-371, July 1962
Copyright © 1962 by Lipid Research, Inc.

Scintillation counter for simultaneous assay of H³ and C¹⁴ in gas-liquid chromatographic vapors

G. Popják , A. E. Lowe , and D. Moore

Medical Research Council Experimental Radiopathology Research Unit, Hammersmith Hospital, London, England

An instrument for the assay of H³ and of C¹⁴ in gas-liquid chromatographic effluents is described. The radioactive analysis is practically simultaneous with the mass-analysis. By the use of coincidence circuitry and pulse-height analysis with discriminators it is possible to measure simultaneously two radioactive isotopes contained in the same sample. Furthermore the addition of a subtracting circuit to the electronic system (described in an Appendix) permits the independent recording of C¹⁴ and of H³ counts.

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