Effects of interfering constituents on tritium smears

doi:10.2172/10161891

Abstract

Tritium smears are performed by Health Protection Operations (HPO) to assess transferable contamination on work place surfaces, materials for movement outside Radiologically Controlled Areas (RCA), and product containers being shipped between facilities. Historically, gas proportional counters were used to detect transferable tritium contamination collected by smearing. Because tritium is a low-energy beta emitter, gas proportional counters do not provide the sensitivity or the counting efficiency to accurately measure the tritium activity on the smear. Liquid Scintillation Counters (LSC) provide greater counting efficiency for the low-energy beta particles along with greater reliability and reproducibility compared to gas flow proportional counters. The purpose of this technical evaluation was to determine the effects of interfering constituents such as filters, dirt and oil on the counting efficiency and tritium recoveries of tritium smears by LSC.

Adaptation of Low-Temperature Autoradiography to Tritium Detection by Elimination of Interfering Luminescence; ADAPTATION DE L'AUTORADIOGRAPHIE A BASSE TEMPERATURE A LA DETECTION DU TRITIUM PAR ELIMINATION D'UNE LUMINESCENCE PARASITE

Pellerin, P. ; Fallot, P. ; Boszormenyi, L. ; ... January 1960

Low-temperature autoradiography was applied to the study of the diffusion of tritiated water in the animal organism. In the course of the work some striking disagreements were observed between the measured radioactivity of water in the organs and the relative intensity of blackening of the photographic plate on which they are projected. The cause of these paradoxical images was found in a phenomenon of luminescence, induced by the very soft beta . The application of the low-temperature autoradiography technique to the detection of H/sup 3/ beta rays thsrefore involves the use of filters opaque to ultraviolet and visible light, butmore »« less
SOME METHODS OF ELIMINATING MATRIX EFFECTS DUE TO A SINGLE INTERFERING ELEMENT IN RADIOISOTOPE X-RAY FLUORESCENCE SPECTROMETRY.

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STUDIES OF METABOLIC TURNOVER WITH TRITIUM AS A TRACER. V. THE PREDOMINANTLY NONDYNAMIC STATE OF BODY CONSTITUENTS IN THE RAT

Thompson, R.C. ; Ballou, J.E. March 1956
DETERMINATION OF ACTIVITY ON SURFACE CONTAMINATION SMEARS.

Stephenson, J. ; Morton, D.S. January 1969
Fluorometric determination of millimicrogram quantities of uranium in air dusts and smears

Sill, C.W. ; LaFleur, P. March 1961

Title: Effects of interfering constituents on tritium smears

Abstract

Citation Formats

Adaptation of Low-Temperature Autoradiography to Tritium Detection by Elimination of Interfering Luminescence; ADAPTATION DE L'AUTORADIOGRAPHIE A BASSE TEMPERATURE A LA DETECTION DU TRITIUM PAR ELIMINATION D'UNE LUMINESCENCE PARASITE

SOME METHODS OF ELIMINATING MATRIX EFFECTS DUE TO A SINGLE INTERFERING ELEMENT IN RADIOISOTOPE X-RAY FLUORESCENCE SPECTROMETRY.

STUDIES OF METABOLIC TURNOVER WITH TRITIUM AS A TRACER. V. THE PREDOMINANTLY NONDYNAMIC STATE OF BODY CONSTITUENTS IN THE RAT

DETERMINATION OF ACTIVITY ON SURFACE CONTAMINATION SMEARS.

Fluorometric determination of millimicrogram quantities of uranium in air dusts and smears