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本文研究了铀矿床样品中（２３９）Ｐｕ的测定方法。其步骤包括：硝酸氢氟酸混合酸溶样的方法；三正辛胺－二甲苯－１０２白色担体反相色层提取和纯化钚的方法；电沉积制备α源的方法；以（２３９）Ｐｕ为示踪同位素，低本底，高灵敏度，高分辨率的α谱测量（２３９）Ｐｕ的方法。本法简便快速，选择性好，可以从组分复杂的大量铀矿岩石及围岩中提取出痕量（２３９）Ｐｕ。测量方法准确可靠，全流程本底为４．３５×１０（－１４）ｇ（２３９）Ｐｕ。经沥青铀矿样品考验结果极为满意，并为连山关铀矿床样品提供了可靠数据，为研究（２３９）Ｐｕ在铀矿床中的地球化学行为及迁移规律奠定了基础。
This paper studies the determination of (239) Pu in uranium deposit samples. The method comprises the following steps of: dissolving a mixed acid of hydrofluoric acid and nitric acid; a method of extracting and purifying plutonium by reversed-phase chromatography with tri (n-octylamine) -xylene-102 white support; a method of preparing alpha source by electrodeposition; Method for the measurement of Pu (239) with isotopic, low background, high sensitivity, and high resolution α spectra. The method is simple, rapid and selective, and can extract traces of 239 Pu from a large number of complex uranium rocks and surrounding rocks. The measurement method is accurate and reliable, the whole process background is 4.35 × 10 (-14) g (239) Pu. The results of the asphalt uranium samples are extremely satisfactory, and provide reliable data for the samples of the Lianshanguan uranium deposit, which lays the foundation for the study of (239) Pu geochemical behavior and migration rules in uranium deposits.