Apparatus for the preparation of liquid form samples for radioactive isotope tracer studies

Abstract

Abstract REFINEMENTS ARE PROVIDED IN A SYSTEM FOR PREPARING LIQUID SAMPLES FOR RADIOACTIVE NUCLIDE ASSAYS. IN THE BASIC SYSTEM, A PRIMARY SAMPLE CONTAINING AT LEAST ONE RADIOACTIVE NUCLIDE OXIDIZABLE TO A RECOVERABLE GAS-FORM OXIDE IS OXIDIZED, AND THE RESULTING COMBUSTION PRODUCTS ARE TREATED FOR THE RECOVERY OF THE RADIOACTIVE NUCLIDE OXIDE AS A FINAL LIQUID SAMPLE. ADVANTAGEOUSLY, NEAR THE BEGINNING OF THE OXIDATION, A GAS-FORM OXIDE OF A NON-RADIOACTIVE ISOTOPE OF THE RADIOACTIVE NUCLIDE IS INTRODUCED. THIS INTRODUCTION SIMULTANEOUSLY INCREASES RECOVERY OF THE RADIOACTIVE NUCLIDE AND DECREASES "MEMORY" OF THE SYSTEM. WHERE THE INTRODUCED OXIDE IS WATER, CORRESPONDING TO TRITIUM IN THE PRIMARY SAMPLE, THE RESULTING APPARATUS IS ADDITIONALLY USEFUL FOR MONITORING BOTH MEMORY AND BACKGROUND COUNT, FOR MAKING QUENCED STANDARD SAMPLES UNCONTAMINATED BY ATMOSPHERIC OXYGEN, AND FOR MATCHING WATER QUENCHING IN SAMPLES OBTAINED FROM PRIMARY SAMPLES OF DIFFERENT SIZE. D R A W I N G

Inventors

• 👤 Niilo H Kaartinen

Bibliographic Details