The methodology for determination of 241Pu in soils of the main test sites of the Semipalatinsk Test Site (STS) has been developed. The results of 241Am and 241Pu activity determination in soil samples sampled at the main testing sites of the STS are presented. 241Pu/241Am activity ratio is calculated. In most cases, on local sites, 241Pu/241Am activity ratio is in a rather narrow range, which makes it possible to estimate 241Pu activity based on the results of 241Am gamma-spectrometric analysis. The accuracy of 241Pu activity estimation using this method will be about 50%, which is quite enough in most cases.

中文翻译：

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研究一种在塞米巴拉金斯克主要试验场区域土壤中241Pu / 241Am活度比的方法。

开发了一种用于测定塞米巴拉金斯克试验场（STS）主要试验场土壤中241Pu的方法。给出了在STS主要测试地点采样的土壤样品中241Am和241Pu活性的测定结果。计算241Pu / 241Am活性比。在大多数情况下，在本地站点上，241Pu / 241Am活性比处于较窄的范围内，这使得可以根据241Am伽马能谱分析的结果估算241Pu活性。使用此方法估算241Pu活性的准确性约为50％，在大多数情况下已经足够。