A sequential method for the determination of Pb-210, Ra-226, and uranium and thorium radioisotopes by LSC and alpha-spectrometry

作者：Lozano J C; Vera Tome F; Blanco Rodriguez P; Prieto C

来源：Applied Radiation and Isotopes, 2010, 68(4-5): 828-831.

DOI：10.1016/j.apradiso.2009.09.053

• Uranium
• Thorium
• Ra-226
• Pb-210
• Radiochemical method

A procedure for the determination of Pb-210, and alpha-emitting radioisotopes of uranium, thorium, and radium from the same aliquot of a sample has been proposed. The key step consisted in the recovery of Pb(II) and Ra by precipitation of insoluble Pb(NO3)(2), the uranium and thorium radioisotopes remaining in solution. Afterwards, the fractions were handled by specific, well consolidated procedures. Lead-210 was determined by the LSC technique while the uranium, thorium, and radium radioisotopes were measured with silicon alpha-spectrometers. The procedure was applied to a reference sample and several environmental samples obtaining satisfactory results.

• 出版日期2010-5