Calculation of Retention and Excretion of Some Selected Radionuclides after Acute Intake by Inhalation According to New ICRP Dose Estimation Models

Abstract

For interpretation of the measured data in individual monitoring for internal exposure, information to relate the measurement results with the intake of radionuclides is essential. In 1998, the International Commission on Radiological Protection (ICRP) issued Publication 78 “Individual monitoring for internal exposure of workers". This publication presented the monitoring data of retention and excretion calculated for 29 selected radionuclides (15 elements). However, there are some more radionuclides which are important from the viewpoint of occupational exposure in nuclear industry, research and medicine. In this paper, eight important radionuclides: ³²P, ⁵¹Cr, ³⁴Mn, ⁶⁵Zn, ⁹⁵Zr, ¹⁴⁰Ba, ¹⁴¹Ce and “¹⁴¹Ce, were selected and the whole-body content and the daily urinary excretion for them after acute intake by inhalation were calculated, where the new ICRP human respiratory tract model and the new ICRP biokinetic models were applied.

KEYWORDS:

• urinary tract
• retention
• excretion
• acute intake
• inhalation
• new ICRP human respiratory tract model
• new ICRP biokinetic models
• ICRP Publication 78
• ICRP Publication 54
• radiation protection
• cerium 144
• cerium 141
• barium 140
• zirconium 95
• zinc 65
• manganese 54
• chromium 51
• phosphorus 32