The transition from technegas to pertechnegas.

E M Scalzetti; G M Gagne

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PubMed · 7830129

The transition from technegas to pertechnegas.

E M Scalzetti·G M Gagne

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Abstract

UNLABELLED: We set out to determine the oxygen concentration of the argon-oxygen mixture in the technegas generator where technegas-like behavior changes to pertechnegas-like behavior which allows [99mTc]pertechnetate to enter the solution. METHODS: We prepared radioaerosols analogous to technegas and pertechnegas, with oxygen concentrations between 0% and 5%. They then were examined by thin-layer chromatography using saline as a solvent to measure the amount of [99mTc]pertechnetate moving with the solvent front as a function of oxygen concentration. RESULTS: The amount of mobile pertechnetate markedly increased when the radioaerosols were created in an atmosphere containing between 0.1% and 0.2% oxygen. The transition from technegas-like to pertechnegas-like behavior occurs when the oxygen-argon gas mixture contains lower concentrations of oxygen than those used in the preparation of pertechnegas. CONCLUSION: Argon intended for the preparation of technegas should contain no more than 0.1% oxygen.

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Aerosols Graphite Oxygen Sodium Pertechnetate Tc 99m Journal Article Research Support, Non-U.S. Gov't

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E M Scalzetti, G M Gagne. 1995. The transition from technegas to pertechnegas.. https://pubmed.ncbi.nlm.nih.gov/7830129/

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