%0 Journal Article
%T Determination of Radium-226 in Rock Samples by Liquid Scintillation Counter
%A W. M. Abdellah
%J Open Journal of Applied Sciences
%P 270-284
%@ 2165-3925
%D 2019
%I Scientific Research Publishing
%R 10.4236/ojapps.2019.94023
%X The
present work examines the validity of using barium as a carrier for ra</span><span style=\"font-family:Verdana;\">dium-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</span></span><span style=\"font-family:&quot;\"> </span><span style=\"font-family:Verdana;\">of Ra-226 was calculated based on the counts
measured in a window set for Po-214 peak. The activity measured by Liquid
Scintillation Count</span><span style=\"font-family:Verdana;\">er</span><span style=\"font-family:Verdana;\">, 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 ¡À 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.
%K Liquid Scintillation Counter
%K Spectrometry
%K Rock
%K Monazite
%K Radium-226
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=92084