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AssigneeChinoin Gyogyszer es Vegyeszeti Termekek Gyara Rt.
InventorsSandor Mlinko, Dezso Banfi, Istvan Gacs, Karoly Payer, Laszlo Otvos, Zoltan Vargay, Emilia Dobis nee Farkas, Tivadar Palagyi
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A process for measuring the isotope content of substances containing .sup.3 H or .sup.3 H and .sup.14 C isotopes in the gas phase, by converting the hydrogen content of the sample into water and the carbon content of the sample to a gaseous substance in simultaneous oxidation processes, separating the formed water and carbon dioxide, reconverting the .sup.3 H content of the water into gaseous form, introducing the gases containing .sup.3 H and possibly also .sup.14 C separately into a detecting unit, and determining the radioactivity of said gases, in which the tritium content of the water carrying the .sup.3 H radio-activity is bonded on a contact catalyst capable of water retention or adsorption and containing activated hydrogen, the gaseous mixture, containing also .sup.14 CO.sub.2 when a sample of .sup.14 C content is analyzed, is removed and, optionally after purification, is fed into a detecting unit together with a counting gas, then the tritium adsorbed on the surface of the catalyst is continuously converted into gas phase by exchange reaction with an appropriate gas flow and is fed into a detecting unit in unchanged state, or in the form of a compound prepared from it by chemical reaction.
A process for measuring the .sup.3 H and .sup.14 C isotope content of substances in the gas phase, which comprises converting the hydrogen content of the substance into water and the carbon content into carbon dioxide in simultaneous oxidation processes, separating the resulting water from the resulting carbon dioxide by passing them through a contact catalyst capable of retaining water and containing activated hydrogen and thereby bonding the .sup.3 H content of the water, purifying the separated gas which contains .sup.14 CO.sub.2, transfering the purified gas with a counting gas into a detector unit, then continuously converting the .sup.3 H retained by said contact catalyst to a gas by exchange reaction with a flowing gas, and feeding the thus liberated .sup.3 H-containing gas with a counting gas into a detectng unit.
Apparatus for measuring the isotope content of a sample labeled with a .sup.3 H isotope or a .sup.3 H isotope and a .sup.14 C isotope, comprising a feeding unit, a burning unit connected from said feeding unit for converting the hydrogen content of the sample into water and any carbon content of the sample into a carbonaceous gas, a reactor connected from said burning unit, said reactor being charged with a contact catalyst for isolating the .sup.3 H content of the water and converting it into a gas, at least one detecting unit connected from said reactor, and at least one recording unit connected from said detecting unit.
Dependencies are inferred from the claim text.