Chromatographic separation of radioactive noble gases from xenon

Xenon and krypton separation in a chromatographic column packed with granulated nano NaY zeolite

In order to investigate the gas separation ability of a column packed with nanozeolitic material, nano NaY zeolite was synthesized and granulated. These uniform granules packed in a chromatographic column were utilized for separation of Xe and Kr under various operating conditions. With regards to the response peaks obtained from trace injections of Xe and Kr into the column, the first and seco...

Efficient Separation of Ar and Kr from Environmental Samples for Trace Radioactive Noble Gas Detection†

Radioactive noble-gas isotopes, Kr (half-life t1/2=10.8 y), Ar (t1/2=269 y), and Kr (t1/2=229,000 y), are ideal tracers and can be detected by atom trap trace analysis (ATTA), a laser-based technique, from environmental samples like air and groundwater. Prior to ATTA measurements, it is necessary to efficiently extract krypton and argon gases from samples. Using a combination of cryogenic disti...

X-ray transitions from antiprotonic noble gases

The onset of antiprotonic X–ray transitions at high principal quantum numbers and the occurence of electronic X–rays in antiprotonic argon, krypton, and xenon has been analyzed with the help of Multiconfiguration Dirac–Fock calculations. The shell–by–shell ionisation by Auger electron emission, characterised by appearance and disappearance of X–ray lines, is followed through the antiprotonic ca...

Biological effects of noble gases.

Noble gases are known for their inertness. They do not react chemically with any element at normal temperature and pressure. Through that, some of them are known to be biologically active by their sedative, hypnotic and analgesic properties. Common inhalation anesthetics are characterized by some disadvantages (toxicity, decreased cardiac output, etc). Inhalation of xenon introduces anesthesia ...

Bimodal Thermal Release of Noble Gases from Meteoritic Nanodiamonds: Are P3 Noble Gases Likely Evolved at Higher Temperatures?