标准摘要
[中文适用范围]： 本文件描述了一种使用化学分离技术通过 α 光谱样品测量土壤中 238Pu 和 239 + 240 同位素的方法。 该方法可用于任何类型的环境研究或监测。 这些技术还可用于测量非常低水平的活动，比天然α发射放射性核素的水平低一两个数量级。 本文件中描述的测试方法还可用于按照适当的采样程序测量污泥、沉积物、建筑材料和产品中的放射性核素[2][3][4][5][7][8]。 所需测试部分的质量取决于样品的假定活性和所需的检测限。 实际上，测试样品的范围可以是 0.1 g 到 100 g。 [外文原描述]： This document describes a method for measuring 238 Pu and 239 + 240 isotopes in soil by alpha spectrometry samples using chemical separation techniques. The method can be used for any type of environmental study or monitoring. These techniques can also be used for measurements of very low levels of activity, one or two orders of magnitude less than the level of natural alpha-emitting radionuclides. The test methods described in this document can also be used to measure the radionuclides in sludge, sediment, construction material and products following proper sampling procedure [2][3][4][5][7][8] . The mass of the test portion required depends on the assumed activity of the sample and the desired detection limit. In practice, it can range from 0,1 g to 100 g of the test sample.
英文名称Measurement of radioactivity in the environment — Soil — Part 4: Plutonium 238 and plutonium 239 + 240 — Test method using alpha spectrometry