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Benedik, L., Spasova, Y., Vasile, M. and Atjen, U.W. (2008) Nuclear and Radiochemistry (NRC-7). Proceedings of the 7th International Conference on Nuclear and Radiochemistry, Budapest, Hungary, 24-29 August 2008, 320.

has been cited by the following article:

• TITLE: Determination of Radium-226 in Rock Samples by Liquid Scintillation Counter

  AUTHORS: W. M. Abdellah

  KEYWORDS: Liquid Scintillation Counter, Spectrometry, Rock, Monazite, Radium-226

  JOURNAL NAME: Open Journal of Applied Sciences, Vol.9 No.4, April 26, 2019

  ABSTRACT: The present work examines the validity of using barium as a carrier for radium-226 determination and optimizes the amount added during the radiochemical separation from rock samples. The activity concentration of Ra-226 is determined in rock samples by liquid scintillation spectrometer via its short-lived daughters after the radiochemical separation. The activity of Ra-226 was calculated based on the counts measured in a window set for Po-214 peak. The activity measured by Liquid Scintillation Counter, LSC using Pulse Shape Analysis, PSA. Ba-133 was used for chemical yield. The applied method was tested using a Certified Reference Material, CRM ore number-Dl-1a which shows a good agreement with the certified values. The applied method for measuring Ra-226 has been adapted to be used in rocks such as monazite. The average activity for Ra-226 in rock samples collected from the commercial grade Egyptian monazite was 13.85 ± 2.05 Bq/g with a detection limit 9.58 mBq/g. The optimum conditions have been established during the present work such as precision, cost and time preparation which makes the method useful for radio chemists and the decision makers.