235U 系列对天然铀及其衰变产物摄入量所致剂量的影响。

Impact of the 235U series on doses from intakes of natural uranium and decay progeny.

作者信息

Lowe L M

机构信息

SENES Consultants Limited, Richmond Hill, Ontario, Canada.

出版信息

Health Phys. 1997 Oct;73(4):694-5. doi: 10.1097/00004032-199710000-00017.

DOI:10.1097/00004032-199710000-00017

PMID:9314233

Abstract

The doses from 235U series radionuclides have often been ignored in dose assessments involving natural uranium and progeny. This is due to the relatively low abundance of 235U in natural uranium (less than 5% on an activity basis). However, inclusion of the 235U series radionuclides, especially 227Ac and 231Pa, in dose calculations can have a substantial impact on estimated inhalation doses.

摘要

在涉及天然铀及其子体的剂量评估中，来自235U系列放射性核素的剂量常常被忽视。这是因为天然铀中235U的丰度相对较低（按活度计小于5%）。然而，在剂量计算中纳入235U系列放射性核素，尤其是227Ac和231Pa，会对估计的吸入剂量产生重大影响。