%0 Journal Article
%T Natural Radioactivity and Dose Assessment for Brands of Chemical and Organic Fertilizers Used in Saudi Arabia
%A W. R. Alharbi
%J Journal of Modern Physics
%P 344-348
%@ 2153-120X
%D 2013
%I Scientific Research Publishing
%R 10.4236/jmp.2013.43047
%X <p align=\"justify\">
	<span style=\"font-family:'Times New Roman','serif';font-size:10pt;\"><span style=\"font-family:Verdana;font-size:12px;\">The activity concentration of naturally occurring radionuclides </span><sup><span style=\"font-family:Verdana;font-size:12px;\">40</span></sup><span style=\"font-family:Verdana;font-size:12px;\">K, </span><sup><span style=\"font-family:Verdana;font-size:12px;\">226</span></sup><span style=\"font-family:Verdana;font-size:12px;\">Ra and </span><sup><span style=\"font-family:Verdana;font-size:12px;\">232</span></sup><span style=\"font-family:Verdana;font-size:12px;\">Th have been measured in different brands of fertilizer samples in Saudi Arabia using sodium iodide gamma spectrometry. The results of measurements showed that the mean</span></span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\"> </span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\"><span style=\"font-family:Verdana;font-size:12px;\">(ranges) of specific activities for </span><sup><span style=\"font-family:Verdana;font-size:12px;\">226</span></sup><span style=\"font-family:Verdana;font-size:12px;\">Ra, </span><sup><span style=\"font-family:Verdana;font-size:12px;\">232</span></sup><span style=\"font-family:Verdana;font-size:12px;\">Th and </span><sup><span style=\"font-family:Verdana;font-size:12px;\">40</span></sup><span style=\"font-family:Verdana;font-size:12px;\">K activities in the nitrogen, phosphorus and potassium fertilizers are 64 (35.8 -</span></span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\"> </span><span style=\"font-family:Verdana;font-size:12px;\">120.7), 17 (3.2</span><span style=\"font-family:Verdana;font-size:12px;\"> -</span><span style=\"font-family:Verdana;font-size:12px;\"> 56.8) and 2453 (744.9</span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\"> </span><span style=\"font-family:'Times New Roman','serif';font-size:10pt;\"><span style=\"font-family:Verdana;font-size:12px;\">- 4227.1) Bq/kg, respectively. With respect to organic fertilizers under investigation, the average radioactivity of </span><sup><span style=\"font-family:Verdana;font-size:12px;\">226</span></sup><span style=\"font-family:Verdana;font-size:12px;\">Ra, </span><sup><span style=\"font-family:Verdana;font-size:12px;\">232</span></sup><span style=\"font-family:Verdana;font-size:12px;\">Th and </span><sup><span style=\"font-family:Verdana;font-size:12px;\">40</span></sup><span style=\"font-family:Verdana;font-size:12px;\">K are 42, 10 and 333 BqKg</span><sup><span
%K Chemical Fertilizers
%K Organic Fertilizer
%K Environmental Radioactivity
%U http://www.scirp.org/journal/PaperInformation.aspx?PaperID=28640