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Preparation of oxygen samples for oxygen 18 oxygen 16 measurements by a combined gas chromatography burning technique



Preparation of oxygen samples for oxygen 18 oxygen 16 measurements by a combined gas chromatography burning technique



International Journal of Applied Radiation and Isotopes 27(4): 211-215



Oxygen is quantitatively separated from O2-N2 gas mixtures by gas chromatography and adsorbed at a molecular sieve at liquid nitrogen temperature. After the desorption of O2 from the molecular sieve the liberated O2 can be converted to CO2. This is achieved by heating a graphite disk through focusing the radiation of a halogen lamp onto its surface.

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