English to Russian Science Chemistry; Chem Sci/Eng

In accordance with the idea of this invention the apparatus for online determination of isotopic composition of non-exchangeable hydrogen and deuterium atoms in ethanol samples comprises of: A) alcohol thermal dehydratation chamber, B) detection device, which contains pyrolysis reactor and the continuous flow isotope spectrometer, and it is connected to the alcohol thermal dehydratation chamber over C) system of vents, connectors and capillary tubes which are used for transfer of analyzed sample as for the purging of the alcohol thermal dehydratation chamber. The alcohol thermal dehydratation chamber, which is the part of the apparatus for online determination of isotopic composition of non-exchangeable hydrogen and deuterium atoms in ethanol samples, comprises of: the reaction vessel (1) which contains upper opening with stopper and septa (2), which is used for injection of ethanol sample (6) by syringe, and left sideway opening (3) with the "Switch" vent for the "Reference" and "Carrier" gas helium (4). One part of the reaction vessel poses thermo-jacket (5) which comprises of two electrical heaters. The second part of the reaction vessel, this part has a tube shape turned to the right side at fig.2, contains dehydratation catalyst (7) and for that puipose aluminum oxide (AI2O3), silica gel, zeolite or the mixture of those substances or similar materials can be used. At the right end the reaction vessel is connected with tube with the gas tight stopper (8). Inside of this tube with the gas tight stopper (8) small amount of silica gel or similar inert hydroscopic material can be placed (9). The right end of this tube with the gas tight stopper (8) contains two vents (10) and (11). Tube with the gas tight stopper (8) at its end is connected via injection connector (12) directly to the pyrolysis reactor (26), which is connected via gas chromatography column (22) and ***Interface Open Split*** (23), which has the capillary for Helium dilution (24), with the isotopic mass spectrometer IRMS (25).
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