核事故后不久土壤和牧草植被中90锶、钚、镅和锔的检测限

Detection limits for 90Sr, Pu, Am and Cm in soil and pasture vegetation shortly after a nuclear accident.

作者信息

Friberg I, Vesanen R

机构信息

Department of Nuclear Chemistry, Chalmers University of Technology, Göteborg, Sweden.

出版信息

Appl Radiat Isot. 1999 Aug;51(2):229-37. doi: 10.1016/s0969-8043(98)00197-3.

DOI:10.1016/s0969-8043(98)00197-3

PMID:10376329

Abstract

This work estimates the critical activity concentrations of 90Sr and the alpha-emitting isotopes of Pu, Am and Cm in soil and pasture vegetation that would be required to exceed the action levels for foodstuffs recommended by the IAEA. The results show that the common detection limits for environmental analysis of these nuclides may be increased by orders of magnitude if the aim of the analysis is to determine whether or not the action levels will be exceeded. This information is useful in the development of more simple and rapid analytical methods to be used shortly after a nuclear accident. In addition to activity concentrations, the critical deposition densities on soil and grazing areas are estimated. Critical limits are also derived for 137Cs and 131I.

摘要

本研究估算了土壤和牧草植被中90Sr以及钚、镅和锔的α发射同位素的临界活度浓度，这些浓度需超过国际原子能机构推荐的食品行动水平。结果表明，如果分析目的是确定是否会超过行动水平，那么这些核素环境分析的常见检测限可能会提高几个数量级。该信息有助于开发在核事故后不久即可使用的更简单快速的分析方法。除活度浓度外，还估算了土壤和放牧区域的临界沉积密度。同时也得出了137Cs和131I的临界限值。