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Article
Determination of Radon Concentrations in Soil Around Al-Tuwaitha Site Using CR-39 Detector

Authors: Khalid H. Mahdi --- Auday T. Subhi --- Najlaa R. Sharif --- Ghuzlan S. Ahmed
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2018 Volume: 36 Issue: 2 Part (C) Pages: 108-112
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

In this work radon concentration in 37 soil samples collectedfrom 17 regions surround the (Al Tuwaitha) were measured by usingsolid-state nuclear track detector (SSNTD.s) CR-39 with naturalexposure of one month, and by comparison with standard samples. Theradon concentration in the soil samples was about (9.583 ± 0.369 ـــ28.029 ± 0.631) Bq/m3 in locations one (Rotate Salman) and eight (Anarea agricultural near high-voltage towers) respectively, with rate of(20.939 ± 0.541) Bq/m3. The specific activity of radium (Ra) dissolvedduring generate radon were ranging between (3.37 – 9.857) Bq.kg-1,with rate of (7.393) Bq.kg-1, surface emission of radon gas rate in thesoil was found between (0.144 – 0.422 Bq/m2.h) with rate of (0.314Bq/m2.h) and their mass emission of radon gas rate has the highestvalue of (0.016 Bq / kg . h) and lower value (0.005 Bq / kg . h) withrate of (0.012 Bq / kg . h. These results are within the acceptable limitthat recorded by UNECEAR and ICRP


Article
Calculation of the Radionuclide Concentrations in Samples of Condiments by Using Gamma Spectroscopy System
حساب تراكيز النويدات المشعة في نماذج من التوابل باستعمال مطيافية اشعة كاما

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Abstract

The aim of this work is to evaluate concentrations of natural and artificial radionuclide in ninedifferent samples of condiments from local markets. The concentrations of 238 U ,232 Th ,40k and 137Cs were measured by using gamma spectroscopy with a high- purity germanium detector. The concentrations of 238 U, 232 Th ,40k and 137Cs were found to be in a range of (21.4 - 91.13), (15.7 - 88.11) , (285.56 – 1100) and (5.1 - 27.5) Bq.kg-1 respectively. These concentrations are not hazardous to public health and the activities are within the allowed levels .

تم في هذه الدراسة حساب تراكيز النويدات المشعة الطبيعية والصناعية في تسعة نماذج من التوابل الموجودة في الاسواق المحلية. استخدمت لهذا الغرض منظومة مطيافية اشعة كاما مع كاشف الجرمانيوم العالي النقاوة ((HpGe لقياس تراكيز النويدات المشعة238U و232Th و 40K و 137Cs في التوابل .كانت تراكيز اليورانيوم- 238 تتراوح بين (21-91.03) بكرل / كغم ، و للثوريوم – 232 بين (15.7-88.11) بكرل / كغم وللبوتاسيوم – 40 بين (285.56 - 1100)بكرل / كغم ، وللسيزيوم (5.1 - 27.5)بكرل / كغم.نستنتج من هذه القيم ، انها مستويات اشعاعيه لاتشكل خطورة على الفرد العراقي وكانت ضمن المستويات المسموحة .

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