[环境样品中的铋 - 207]

[Bismuth-207 in environmental samples].

作者信息

Komura K

出版信息

Radioisotopes. 1985 Oct;34(10):555-8. doi: 10.3769/radioisotopes.34.10_555.

DOI:10.3769/radioisotopes.34.10_555

Abstract

Measurements of fallout 207Bi in environmental samples were reported for water filters used at the Scott Base in Antarctica and the surface soils containing high amount of fallout nuclides. The level of 207Bi in these samples was found to be nearly the same or a little higher than that of fallout 60Co and the 207Bi/137Cs activity ratios were in the range of 0.001-0.018. Contamination of bismuth by 207Bi was found in "high purity" bismuth on market and its level was measured to be 1.9 mBq/g-Bi.

摘要

报告了南极斯科特基地使用的滤水器以及含有大量沉降核素的表层土壤等环境样品中沉降207Bi的测量结果。发现这些样品中207Bi的水平与沉降60Co的水平几乎相同或略高，且207Bi/137Cs活度比在0.001 - 0.018范围内。在市售“高纯度”铋中发现了207Bi对铋的污染，其水平经测量为1.9 mBq/g - Bi。