Letter | Published:

Analysis of Ternary Gas Mixtures by Thermal Conductivity Measurements

Naturevolume 140page63 (1937) | Download Citation



IT frequently happens in the course of exchange reactions with deuterium and hydrogen that a third gas is present initially, or is produced during such experiments (for example, nitrogen in exchange reactions with ammonia and deuterium). If this gas is non-condensable in liquid air, the deuterium content of the gas cannot be estimated by the convenient thermal conductivity methods, unless a trap cooled with liquid hydrogen is employed to freeze out the third constituent of the mixture. The gases concerned are oxygen, nitrogen, carbon monoxide and methane and the inert gases. The only alternative method is to burn the gases and measure the deuterium content of the water so produced.


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    Melville and Bolland, Proc. Roy. Soc., in press.

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  1. Chemistry Department, University, Edinburgh

    • J. L. BOLLAND
  2. Colloid Science Laboratory, Cambridge

    • H. W. MELVILLE


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