METHOD FOR CONCENTRATING OXYGEN ISOTOPE

Title:

METHOD FOR CONCENTRATING OXYGEN ISOTOPE

Document Type and Number:

WIPO Patent Application WO/2004/078325

Kind Code:

A1

Abstract:

A method for concentrating oxygen isotope which comprises irradiating ozone with a specific light to thereby selectively decompose an isotopomer of ozone containing an isotope of oxygen, and separating the oxygen formed by the decomposition of the ozone from undecomposed ozone, to concentrate the oxygen isotope in the oxygen separated. A system for concentrating oxygen isotopes comprises a means (11) for forming ozone from a raw material of oxygen, an ozone separating means (12) for separating the ozone formed in said ozone forming means from the raw material oxygen, an ozone photodegradation means (13) for irradiating the ozone separated by the ozone separating means (12) with a light having a specific wave length, to selectively decompose the ozone containing an oxygen isotope in its molecule, and an oxygen separation means for separating the oxygen formed in the ozone photodegradation means (13) by the decomposition of ozone from undecomposed ozone, to thereby concentrate an oxygen isotope in the oxygen. The method allows the practice of the concentration of ¹⁷O or ¹⁸O, which is a stable isotope of oxygen, with a simple and convenient system of devices.

Inventors:

HAYASHIDA SHIGERU (JP)

Application Number:

PCT/JP2004/002568

Publication Date:

September 16, 2004

Filing Date:

March 02, 2004

Export Citation:

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Assignee:

NIPPON OXYGEN CO LTD (JP)
HAYASHIDA SHIGERU (JP)

International Classes:

B01D59/34; (IPC1-7): B01D59/34

Foreign References:

JPH03165817A	1991-07-17
EP0489916A1	1992-06-17

Other References: