en Radiation Biology Radiation Biology تحقيق بديع Original Research <p> </p><p class="MsoNormal" style="TEXT-ALIGN: center mso-pagination: none" ><p class="MsoNormal" style="DIRECTION: rtl unicode-bidi: embed TEXT-ALIGN: right mso-pagination: none"><span dir="ltr" style="DIRECTION: ltr FONT-FAMILY: "></span></p><p align="center"><span style="FONT-WEIGHT: bold language: EN-GB mso-ansi-language: EN-GB">ABSTRACT</span></p><p></p><p class="MsoBodyText2" style="mso-pagination: widow-orphan"><span style="FONT-FAMILY: Arial language: EN-GB mso-ansi-language: EN-GB mso-default-font-family: Arial mso-ascii-font-family: Arial mso-latin-font-family: Arial mso-greek-font-family: Arial mso-cyrillic-font-family: Arial mso-hebrew-font-family: Arial mso-arabic-font-family: Arial mso-latinext-font-family: Arial"></span></p><p></p><p class="MsoNormal" style="TEXT-JUSTIFY: inter-word MARGIN-RIGHT: -9pt TEXT-ALIGN: justify mso-pagination: none"><span style="FONT-WEIGHT: bold language: EN-GB mso-ansi-language: EN-GB">Background:</span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"> 226 </span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra and </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>228 </span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra contents in foodstuffs of Ramsar which is a coastal city in the northern part of Iran were determined by gamma spectrometry. Measurement results together with food consumption rates were used to estimate annual effective dose from  </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB">226 </span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra and </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>228 </span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra, due to consumption of food stuffs by inhabitants of Ramsar city.</span></p><p></p><p class="MsoNormal" style="TEXT-JUSTIFY: inter-word MARGIN-RIGHT: -9pt TEXT-ALIGN: justify mso-pagination: none"><span style="FONT-WEIGHT: bold language: EN-GB mso-ansi-language: EN-GB">Materials and Methods:</span><span style="language: EN-GB mso-ansi-language: EN-GB"> A total of 33 samples from 11 different foodstuffs including root<span style="mso-spacerun: yes">  </span>vegetables (beetroot), leafy vegetables (lettuce, parsley and spinach) and tea, meat, chicken, pea, broad bean, rice, and cheese were purchased from markets of Ramsar city and were analyzed for their </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>226 </span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra and </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>228</span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra<span style="mso-spacerun: yes">  </span>concentration. 1-8 kg of fresh weight sample was placed in Marinnelli beaker and sealed. The measurement of natural radioactivity levels as performed by gamma-spectrometry system, using a high purity germanium (HPGe) detector with 40% relative efficiency.</span></p><p></p><p class="MsoBodyText2" style="TEXT-JUSTIFY: inter-word MARGIN-RIGHT: -9pt TEXT-ALIGN: justify mso-pagination: widow-orphan"><span style="FONT-WEIGHT: bold language: EN-GB mso-ansi-language: EN-GB">Results:</span><span style="language: EN-GB mso-ansi-language: EN-GB"> The highest concentrations of </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>226</span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra and </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>228 </span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra were determined in tea samples with 1570 and 1140 mBq/kg</span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"> ,</span>}<span style="language: EN-GB mso-ansi-language: EN-GB"> respectively , and the lowest concentration of </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>226</span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra<span style="mso-spacerun: yes">  </span>was in pea, cheese, chicken, broad bean, and beetroot.</span></p><p></p><p class="MsoNormal" style="TEXT-JUSTIFY: inter-word MARGIN-RIGHT: -9pt TEXT-ALIGN: justify mso-pagination: none"><span style="FONT-WEIGHT: bold language: EN-GB mso-ansi-language: EN-GB">Conclusion</span><span style="language: EN-GB mso-ansi-language: EN-GB">: The maximum estimated<span style="mso-spacerun: yes">  </span>annual effective dose from </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>226 </span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra and </span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>228 </span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra due to consumption of foodstuffs were determined to be<span style="mso-spacerun: yes">  </span>19.22<span style="mso-spacerun: yes">   </span>and<span style="mso-spacerun: yes">   </span>0.71 </span><span style="FONT-FAMILY: Symbol language: EN-GB mso-ansi-language: EN-GB mso-default-font-family: Symbol mso-latin-font-family: Symbol mso-greek-font-family: Symbol">m</span><span style="language: EN-GB mso-ansi-language: EN-GB">Sv<span style="mso-spacerun: yes">   </span>from<span style="mso-spacerun: yes">  </span>rice<span style="mso-spacerun: yes">  </span>and<span style="mso-spacerun: yes">  </span>meat samples respectively, where<span style="mso-spacerun: yes">  </span>as, the minimum estimated annual effective dose for<span style="mso-spacerun: yes">  </span></span>^{<span style="language: EN-GB mso-ansi-language: EN-GB"><span dir="ltr"></span>226</span>}<span style="language: EN-GB mso-ansi-language: EN-GB">Ra<span style="mso-spacerun: yes">  </span>was 0.017, 0.018 and 0.019 </span><span style="FONT-FAMILY: Symbol language: EN-GB mso-ansi-language: EN-GB mso-default-font-family: Symbol mso-latin-font-family: Symbol mso-greek-font-family: Symbol">m</span><span style="language: EN-GB mso-ansi-language: EN-GB">Sv from beetroot, cheese and pea samples respectively.</span></p><p></p><p class="MsoNormal" style="DIRECTION: rtl unicode-bidi: embed TEXT-ALIGN: right mso-pagination: none"><span dir="ltr" style="DIRECTION: ltr FONT-FAMILY: "> </span></p><p></p><p> </p> ,Gamma spectrometry,226 Ra and 228 Ra,annual effective dose,Ramsar 47 48 http://ijrr.com/browse.php?a_code=A-10-1-125&slc_lang=en&sid=1 M. Asefi mrymsf@yahoo.com 79003194753284600349 79003194753284600349 Yes A.A. Fathivand 79003194753284600350 79003194753284600350 No J. Amidi 79003194753284600351 79003194753284600351 No