تعیین نقشه رادیولوژیکی توزیع هسته‌های پرتوزا در خاک‌های اطراف نیروگاه سوخت ‌فسیلی شازند

نویسندگان

دانشگاه اراک

چکیده

در این پژوهش از شرق نیروگاه شازند تا اراک 34 نمونه خاک در فاصله 25 کیلومتر جمع­آووری و مورد مطالعه قرار گرفت. فعالیت ویژه هسته­های پرتوزای ‏‎ Ra 226 ، Th232 وK40 و Cs‏‎137 با استفاده از آشکارسازHPGe  با بازدهی نسبی 30% و به روش اسپکترومتری گاما تعیین گردیدند.گستره پرتوزایی مقدار فعالیت ویژه هسته های پرتوزای مذکور درنمونه های جمع­آوری شده از82/3±92/18تا 38/5±11/43  از23/4±31/25 تا 30/7± 27/54 ،از 93/ 19 ± 17/230 تا06/36 ±  25/728 و کمتراز49/1 تا 76/1 ±77/35 بکرل برکیلوگرم  اندازه­گیری گردید. مقدار.شاخص های  گاما و آلفا برای نمونه ها  محاسبه شد.  شاخص گاما با مقدار میانگین  86/0 دربازه با مقدار 61/0 تا مقدار16/1 تغییر می­کند. شاخص آلفا به ترتیب با مقادیر 09/0تا 22/0 درنمونه ها با مقدارمیانگین 13/0 به­دست آمد. . نقشه رادیولوژیکی توزیع هسته های پرتوزا با استفاده از نرم افزارSURFUR15  رسم گردید.

کلیدواژه‌ها

عنوان مقاله [English]

Determination of radiological map of radionuclides distribution in soils ‎around of Shazand oil power plant

نویسندگان [English]

  • Reza Pourimani
  • Tayebeh Davoodmaghami
  • Monire Mohebian
چکیده [English]

In this study, 34 soil samples were collected from the east of the Shazand power plant to the  Arak city, with a length of 25 km. The specific activities of radionuclides of 226Ra, 232Th, 40K, and 137Cs were determined using gamma-ray spectrometry method. Gamma-ray spectra registered to employ high purity germanium (HPGe) detector with 30% relative efficiency. Specific activities of corresponding radionuclides in the soil samples varied from 18.92±3.82 to 43.11±5.38, from 25.31±4.23 to 54.27±7.30, from 230.17±19.93 to 728.25±36.06 and from <1.49 to 35.77±1.76 in Bq/kg, respectively. Alpha and gamma indices were calculated. Gamma index with average value as 0.86 in samples varied from 0.61 to 1.16.  Alpha index obtained in a range of 0.09 to 0.22 with average as 0.13. Radiological map of radionuclides distributions using SURFUR15 software was derived.

کلیدواژه‌ها [English]

  • radioactive nuclides
  • fossil fuel power plant
  • radiological maps
  • gamma index
  • alpha index

مراجع

[1] UNSCEAR, United Nations Scientific Committee on the Effects of Atomic Radiation. Exposure from natural sources of radiation, United Nations publication sales No. 10.IX.3. (2008) United Nations, United Nations Office at Vienna. [2] A. N. Al-Farsi. Radiological Aspect of Petroleum exploration and production in Sultanate of Oman. PhD thesis, Queensland University and Technology, (2008). [3] A.J. Wilson, L.M. Scot. Characterization of Radioactive Petroleum piping scale with an evaluation of subsequent land contamination. Health Physics, 63 (1992) 681-685. [4] http://shazandtpp.ir/ [5] International Atomic Energy Agency,Compliance Monitoring for remediated sites, IAEA-TECDOC-1415, IAEA, VIENNA, (2004). [6] UNSCEAR, United Nations Scientific Committee on the Effects of Atomic Radiation. Sources, effects and risks of ionizing radiation. New York: United Nations, (2000). [7] A. El- Taher, L. Najam, I. M. Omoniyi. Effect of Cement Factory Exhaust on Radiological Contents of Surrounding Soi l Samples in Assui t Province, Egypt Article in Journal of Physical Science • November.DOI: 0.21315/jps2017.28.3.9 [8] I. Bikit. Radioactivity of the soil in Vojvodina (northernprovince of Serbia and Montenegro). J. Environ. Radioact. 78 (2004) 11–19. [9] M. Tufail, N. Akhtar, M. Waqas. Measurement of terrestrial radiation for assessment of gamma dose from cultivated and barren saline soils of Faisalabad in Pakistan. Radiat. Meas. 41(2006) 443–451. [10] S.A. Issa. Radiometric assessment of natural radioactivity levels of agricultural soil samples collected in Dakahlia, Egypt. Radiat. Prot. Dosim. 56(1) (2013) 59-67. [11] W. Boukhenfouf, A. Boucenna. The radioactivity measurements in soils and fertilizers using gamma spectrometry technique. J. Environ. Radioact. 102 (2011) 336–339. [12] A. Nisar, M. Suhaimi Jaafar, M. S. Alsaffar. Natural radioactivity in virgin and agricultural soil and its environmental implications in Sungai Petani, Kedah, Malaysia. Pollut., 1(3) (2015) 305–313. [13] L. A. Najam, S. A. Younis. Assessment of natural radioactivity level in soil samples for selected regions in Nineveh Province (Iraq). Int. J. Novel Res. Phys. Chem. Math. 2(2) (2015) 1–9. [14] M.R Usikalu, A.B. Rabiu, K.D. Oyeyemi, J.A. Achuka, M. Maaza. Radiation hazard in soil from Ajaokuta North-central Nigeria. International Journal of Radiation Research. 15(2) (2017) 219-224. [15] H. Abbas, F.Z. Masoumeh. the Effect of Soil Radioactivity in Pollution. Journal of Community Health Research. 2(4) (2013) 286-292.

فایل ها

هم رسانی

ارجاع به این مقاله

آمار