Modelling of constant and realistic chronic intake scenarios and their implications.

IF 0.8 4区环境科学与生态学 Q4 ENVIRONMENTAL SCIENCES Radiation protection dosimetry Pub Date : 2024-12-06 DOI:10.1093/rpd/ncae213

Sushanta Halder, Minal Yesuraja Nadar, Lokpati Mishra, Deepak Kumar Akar, Jogendra Yadav, Indrasen Singh, Pramilla Sawant, Probal Chaudhury

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Abstract

Chronic inhalation intake of radionuclides is possible for radiation workers in the nuclear industry. The International Commission on Radiological Protection (ICRP) provides organ retention fractions as well as daily urinary and fecal excretion for chronic intake of various radionuclides. In this study, organ retention fractions and daily urinary excretion for chronic intake were estimated for constant chronic intake (CCI) and realistic chronic intake (RCI) scenarios. CCI is a daily intake of 1 Bq, and RCI is an intake of 1.4 Bq for five working days followed by two days gap. Radiologically important radionuclides such as 239Pu, 60Co, 137Cs, 131I, and 3H having long, moderate, and short effective half-lives in the deposited organ or whole body were considered. The retention fractions and daily urinary excretion of all the radionuclides studied for RCI were found to converge with those for the CCI scenario at ~40 to 200 days except for daily urinary excretion of 131I.

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模拟恒定和现实的长期摄入情景及其影响。

核工业中的辐射工作人员有可能长期吸入放射性核素。国际辐射防护委员会（ICRP）提供了慢性摄入各种放射性核素的器官滞留分数以及每日尿液和粪便排泄量。在本研究中，对恒定慢性摄入量（CCI）和实际慢性摄入量（RCI）情况下的慢性摄入量器官滞留分数和每日尿液排泄量进行了估算。CCI 是指每天摄入 1 Bq，RCI 是指连续五个工作日摄入 1.4 Bq，然后间隔两天。考虑的放射性核素包括 239Pu、60Co、137Cs、131I 和 3H，它们在沉积器官或全身的有效半衰期有长、中和短之分。除 131I 的每日尿液排泄量外，所有研究的放射性核素在 RCI 情况下的滞留分数和每日尿液排泄量都与 CCI 情况下的滞留分数和每日尿液排泄量在 ~40 至 200 天之间趋同。

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来源期刊

Radiation protection dosimetry 环境科学-公共卫生、环境卫生与职业卫生

CiteScore

1.40

自引率

10.00%

发文量

223

审稿时长

6-12 weeks

期刊介绍： Radiation Protection Dosimetry covers all aspects of personal and environmental dosimetry and monitoring, for both ionising and non-ionising radiations. This includes biological aspects, physical concepts, biophysical dosimetry, external and internal personal dosimetry and monitoring, environmental and workplace monitoring, accident dosimetry, and dosimetry related to the protection of patients. Particular emphasis is placed on papers covering the fundamentals of dosimetry; units, radiation quantities and conversion factors. Papers covering archaeological dating are included only if the fundamental measurement method or technique, such as thermoluminescence, has direct application to personal dosimetry measurements. Papers covering the dosimetric aspects of radon or other naturally occurring radioactive materials and low level radiation are included. Animal experiments and ecological sample measurements are not included unless there is a significant relevant content reason.