Assay methods for 238U, 232Th, and 210Pb in lead and calibration of 210Bi bremsstrahlung emission from lead

详细信息    查看全文

• 作者：John L. Orrell ; Craig E. Aalseth…
• 刊名：Journal of Radioanalytical and Nuclear Chemistry
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：309
• 期：3
• 页码：1271-1281
• 全文大小：924 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Nuclear Chemistry
  Physical Chemistry
  Nuclear Physics, Heavy Ions and Hadrons
  Diagnostic Radiology
  Inorganic Chemistry
  
• 出版者：Akad茅miai Kiad贸, co-published with Springer Science+Business Media B.V., Formerly Kluwer Academic
• ISSN：1588-2780
• 卷排序：309

文摘

Methods for measuring 238U, 232Th, and 210Pb in refined lead are presented. The 238U and 232Th concentrations are determined using isotope dilution inductively coupled plasma mass spectrometry after anion exchange column separation of dissolved lead samples. The 210Pb concentration is inferred through α-spectroscopy of a daughter isotope, 210Po, after precipitation separation of dissolved lead samples. Subsequent to the 210Po α-spectroscopy measurement, a method for evaluating 210Pb concentrations was developed via measurement of bremsstrahlung radiation from β-decay of a daughter isotope, 210Bi, using a 14-crystal array of high purity germanium detectors. Ten sources of refined lead were assayed and results are presented.KeywordsLead assay238U232Th210PbInductively coupled plasma mass spectrometry (ICP-MS)α-spectroscopyγ-ray spectroscopy