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Title: Estimating the dose from atmospheric releases of HT

Abstract

Measurements of uptake of tritium by humans and laboratory animals following exposure to tritiated hydrogen gas, HT, suggest that the radiotoxicity of HT is four orders of magnitude less than that of tritiated water, HTO. However, this analysis does not take into account the conversion of HT into HTO following release into the environment. Experimental releases of HT have demonstrated that HT release to the environment is converted to HTO by soil microorganisms. In this report two methods are used to estimate the effect of HT to HTO conversion on the inhalation dose of individuals exposed to tritium downwind of a release of HT. From this analysis it is predicted that the ratio of dose from inhalation of tritium following an atmospheric release of HT, as compared to inhalation of HTO, is closer to 0.01 than the 0.0001 attributed to simple HT inhalation. Under meteorologic conditions which keep the HT release near the surface and promote optimum soil microbial activity, the analysis suggests that the ratio of dose from an atmospheric HT release could be as high as 25% of that from an atmospheric HTO release.

Authors:
Publication Date:
Research Org.:
Westinghouse Savannah River Co., Aiken, SC (United States)
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
10127825
Report Number(s):
WSRC-TR-90-538
ON: DE92009428
DOE Contract Number:
AC09-89SR18035
Resource Type:
Technical Report
Resource Relation:
Other Information: PBD: 13 Nov 1990
Country of Publication:
United States
Language:
English
Subject:
61 RADIATION PROTECTION AND DOSIMETRY; TRITIUM; INHALATION; TRITIUM COMPOUNDS; TOXICITY; RADIATION DOSES; HUMAN POPULATIONS; SOILS; MICROORGANISMS; 560101; DOSIMETRY AND MONITORING

Citation Formats

Murphy, C.E. Jr. Estimating the dose from atmospheric releases of HT. United States: N. p., 1990. Web. doi:10.2172/10127825.
Murphy, C.E. Jr. Estimating the dose from atmospheric releases of HT. United States. doi:10.2172/10127825.
Murphy, C.E. Jr. 1990. "Estimating the dose from atmospheric releases of HT". United States. doi:10.2172/10127825. https://www.osti.gov/servlets/purl/10127825.
@article{osti_10127825,
title = {Estimating the dose from atmospheric releases of HT},
author = {Murphy, C.E. Jr.},
abstractNote = {Measurements of uptake of tritium by humans and laboratory animals following exposure to tritiated hydrogen gas, HT, suggest that the radiotoxicity of HT is four orders of magnitude less than that of tritiated water, HTO. However, this analysis does not take into account the conversion of HT into HTO following release into the environment. Experimental releases of HT have demonstrated that HT release to the environment is converted to HTO by soil microorganisms. In this report two methods are used to estimate the effect of HT to HTO conversion on the inhalation dose of individuals exposed to tritium downwind of a release of HT. From this analysis it is predicted that the ratio of dose from inhalation of tritium following an atmospheric release of HT, as compared to inhalation of HTO, is closer to 0.01 than the 0.0001 attributed to simple HT inhalation. Under meteorologic conditions which keep the HT release near the surface and promote optimum soil microbial activity, the analysis suggests that the ratio of dose from an atmospheric HT release could be as high as 25% of that from an atmospheric HTO release.},
doi = {10.2172/10127825},
journal = {},
number = ,
volume = ,
place = {United States},
year = 1990,
month =
}

Technical Report:

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  • Measurements of uptake of tritium by humans and laboratory animals following exposure to tritiated hydrogen gas, HT, suggest that the radiotoxicity of HT is four orders of magnitude less than that of tritiated water, HTO. However, this analysis does not take into account the conversion of HT into HTO following release into the environment. Experimental releases of HT have demonstrated that HT release to the environment is converted to HTO by soil microorganisms. In this report two methods are used to estimate the effect of HT to HTO conversion on the inhalation dose of individuals exposed to tritium downwind ofmore » a release of HT. From this analysis it is predicted that the ratio of dose from inhalation of tritium following an atmospheric release of HT, as compared to inhalation of HTO, is closer to 0.01 than the 0.0001 attributed to simple HT inhalation. Under meteorologic conditions which keep the HT release near the surface and promote optimum soil microbial activity, the analysis suggests that the ratio of dose from an atmospheric HT release could be as high as 25% of that from an atmospheric HTO release.« less
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