本文件描述了一种使用化学分离技术通过α光谱法样品测量土壤中钚和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。这些技术也可用于测量非常低的放射性水平，比天然α放射性核素水平低一个或两个数量级。 本文件中描述的试验方法也可用于按照适当的取样程序测量污泥、沉积物、建筑材料和产品中的放射性核素。 所需测试部分的质量取决于样品的假定活性和期望的检测极限。 在实践中，其范围可从0.1 g至100 g的试样。

This document describes a method for measuring ²³⁸Pu 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.