International Journal of Radiation Research
نشریه پرتو پژوه
Int J Radiat Res
Basic Sciences
http://ijrr.com
79
journal79
2322-3243
2345-4229
10.61186/ijrr
en
jalali
1401
1
1
gregorian
2022
4
1
20
2
online
1
fulltext
en
Assessment of natural radioactivity in mango, the influence of soil radioactivity, its radiation hazard indices and the overall excess lifetime cancer risk
Radiation Biology
Radiation Biology
تحقيق بديع
Original Research
<div style="text-align: justify;"><span style="font-size:10pt"><span style="text-justify:newspaper"><span style="text-kashida-space:50%"><span style="line-height:119%"><span style="font-family:Calibri"><span style="color:black"><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Background</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Radionuclide ingestion has raised a global concern due to its radiological implication on man. </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Materials and Methods</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Activity concentration of natural radionuclides (</span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>226</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Ra, </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>232</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Th and </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>40</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">K) in soil, leaf and fruit samples of mango plants from Akure, Nigeria has been estimated using gamma ray spectrometer NaI (Tl) detector. Spectra analyses were performed with the Genie2K spectrometry software, version 2.1 (Canberra industries Inc). </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Results</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">The mean activities concentration of </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>40</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">K, </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>226</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Ra and </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>232</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Th in soils were </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">469.72 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">86.44, 25.17 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">9.87 and 19.33 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">6.98 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Bq kg</span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>-1</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"> respectively. The mean activities concentration of </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>40</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">K, </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>226</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Ra and </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>232</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Th in leaves were </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">444.76 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">89.10, 20.43 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">7.47 and 17.23 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">7.39 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Bq kg</span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>-1</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"> respectively. The mean activities concentration of </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>40</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">K, </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>226</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Ra and </span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>232</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Th in fruits were </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">439.54 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">87.39, 18.96 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">6.80 and 15.43 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">5.64 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">Bq kg</span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>-1</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"> respectively. The mean total absorbed dose rate in air and the mean annual effective dose equivalent for soil sample were estimated at </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">39.37 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">11.43 nGy h</span></span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>-1 </sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">and </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">48.28 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Symbol"><span style="color:black"><span style="language:en-US">±</span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">14.01 </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="color:black"><span style="language:en-US">µSv y</span></span></span><span lang="en-US" style="font-size:5.9939pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US"><sup>-1</sup></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">. </span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-style:italic"><span style="font-weight:bold"><span style="language:en-US">Conclusion</span></span></span></span></span></span><span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:#1f497d"><span style="font-weight:bold"><span style="language:en-US">:</span></span></span></span></span> <span lang="en-US" style="font-size:9.0pt"><span style="font-family:Calibri"><span style="color:black"><span style="language:en-US">The mean radium equivalent, hazard indices and excess lifetime cancer risks (ELCR) through soil exposures are below the world average, but the mean annual effective dose equivalent and ELCR for different age groups, from radionuclide ingestion through mango consumption in the area are above the world average.</span></span></span></span></span></span></span></span></span></span></div>
Mango plants, activity concentration, hazard indices, cancer risk.
483
489
http://ijrr.com/browse.php?a_code=A-10-1-933&slc_lang=en&sid=1
S.B.
Ibikunle
tuncom7084@yahoo.co.uk
7900319475328460021695
7900319475328460021695
No
Department of Physics, The Federal University of Technology, P. M. B. 704, Akure, Ondo State. Nigeria