Kononykina N N, Astafurov V I, Zablotskaia I D, Popov V I
Gig Tr Prof Zabol. 1990(11):54-6.
The contributors propose a radiometric technique of detecting thorium in urine. The technique is based on a prior concentrating of the nuclide on phosphate residues, with its further separation in extraction-chromatographic vessel filled with diethylhexylphosphorus acid, and reextraction with oxalic acid. Measurements were made in the hard scintillator layer at 90 percent effectiveness. Thorium chemical output was at 85 +/- 3 percent, sensitivity at 5 mBk for a sample. If the sample contained an equal quantity of uranium, the percentage of cleaning thorium from uranium was 100. The proposed technique is economical, simple to perform, and is designed for natural thorium content measurements in human organism.
研究人员提出了一种检测尿液中钍的放射性测量技术。该技术基于先将该核素富集在磷酸盐残渣上，然后在装有二乙基己基磷酸的萃取色谱柱中进行进一步分离，并用草酸进行反萃取。测量在硬闪烁体层中进行，效率为90%。钍的化学产率为85±3%，样品灵敏度为5毫贝克勒尔。如果样品中含有等量的铀，从铀中清除钍的百分比为100。所提出的技术经济、操作简单，旨在用于测量人体中的天然钍含量。
