Ağlayankaya plaj kumlarında doğal radyoaktivite düzeylerinin ve radyolojik tehlike indekslerinin değerlendirilmesi

Yıl 2018, Sayı: 13, 118 - 123, 31.08.2018

Kadir Günoğlu

https://doi.org/10.31590/ejosat.452831

Cited By: 1

Öz

Bu çalışmada, Şile-İstanbul' da bulunan
Ağlayankaya plajından toplanan kumların doğal radyoaktivite seviyelerini
belirlemek için ²²⁶Ra, ²³²Th ve ⁴⁰K konsantrasyonları gama spektrometre sistemi ile ölçülmüştür. Kum
numunelerindeki ²²⁶Ra, ²³²Th ve ⁴⁰K aktivite
konsantrasyonları, sırasıyla 35.170, 31.637 ve 382.284 Bq / kg ortalamaları ile
27.368 ila 41.773, 22.147 ila 40.125 ve 293.667 ila 463.582 Bq / kg
arasındadır. Ölçümler sonucunda elde edilen ²²⁶Ra, ²³²Th
ve ⁴⁰K aktivite konsantrasyonları kullanılarak soğurulan gama doz
hızı, yıllık etkin doz eşdeğeri, radyum eşdeğer aktivitesi, iç tehlike endeksi
ve dış tehlike endeksi değerleri hesaplanmıştır. Bunların yanı sıra, radyasyon
maruziyetinin bir sonucu olan yaşam boyu kanser riski (LCR) hesaplanmıştır.
Elde edilen tüm sonuçlar uluslararası kuruluşlar tarafından önerilen limit
değerler ile karşılaştırılmıştır. Bu sonuçlara göre, hem radyolojik zarar
indeksleri açısından hem de doz parametreleri açısından hiç bir zarar teşkil
etmediği sonucuna varılabilir.

Anahtar Kelimeler

Doğal radyoaktivite, kum, radyolojik tehlike indeksleri, ağlayankaya plajı

Assessments of natural radioactivity levels and radiological hazard indices in Ağlayankaya beach sands

Öz

In this study, 226Ra, 232Th and 40K concentrations were measured by gamma spectrometry system to determine the natural radioactivity levels of sand collected from Aglayankaya beach in Şile-Istanbul. The activity concentrations of 226Ra, 232Th and 40K in the sand samples are between 27.368 and 41.773, 22.147 to 40.125 and 293.667 to 463.582 Bq / kg, respectively, with averages of 35.170, 31.637 and 382.284 Bq / kg. The absorbed dose rate, annual effective dose equivalent, radium equivalent activity, internal hazard index and external hazard index values were calculated using the 226Ra, 232Th, 40K activity concentrations obtained as a result of the measurements. In addition, lifetime cancer risk (LCR), which is a consequence of radiation exposure, has been calculated. All the results obtained are compared with the limit values recommended by international organizations. According to these results, it can be concluded that there
is no harm in terms of both radiological damage indices and dose parameters. 

Anahtar Kelimeler

Natural radioactivity, sand, radiological hazard indices, Aglayankaya beach

Kaynakça

• UNSCEAR, 2000. Sources and effects of ionizing radiation. United Nations Scientific Committee on the effect of atomic radiation. Report to the General Assembly, with Scientific Annexes. United Nations, New York.
• Veiga, R., Sanches, N., Anjos, R.M., Macario, K., Bastos, J., Iguatemy, M., Aguiar, J.G., Santos, A.M.A., Mosquera, B., Carvalho, C., Filho, M.B., Umisedo, N.K., 2006. Measurement of natural radioactivity in Brazilian beach sands. Radiat. Meas. 41 (2), 189–196.
• Peterson, J.M., Mac Donell, M., Haroun, L., Monette, F., Hildebrand, R.D., Taboas, A., Radiological and Chemical Fact Sheets to Support Health Risk Analyses for Contaminated Areas, Human Health Fact Sheet, Argonic, 38-39(2007).
• Akkurt I. and Gunoglu,K., 2014. Natural Radioactivity Measurements and Radiation Dose Estimation in Some Sedimentary Rock Samples in Turkey. Science and Technology of Nuclear Installations Volume 2014, Article ID 950978
• Akkurt, I., Oruncak, B., Gunoglu,K., 2010. Natural radioactivity and dose rates in commerciallyused marble from Afyonkarahisar – Turkey. International Journal of the Physical Sciences Vol. 5 (2), p:170-173.
• Günay O., 2018 , Determination of Natural Radioactivity and Radiological Effects in some Soil Samples in Beykoz-Istanbul, European Journal of Science and Technology No. 12, pp. 9-14, April 2018 ISSN:2148-2683
• İskender AKKURT, N. Ayten UYANIK, Kadir GÜNOĞLU “Radiation dose Estimation: An in vitro Measurement for Isparta-Turkey” IJCESEN 1-1(2015)1-4 DOI: 10.22399/ijcesen.194376
• Carvalho, C., Anjos, R.M., Veiga, R., Macario, K., 2011. Application of radiometric analysis in the study of provenance and transport processes of Brazilian coastal sediments. J. Environ. Radioact. 102, 185–192. https://doi.org/10.1016/j.jenvrad.2010.11.011
• Carvalho, C., Anjos, R.M., Veiga, R., Macario, K., 2011. Application of radiometric analysis in the study of provenance and transport processes of Brazilian coastal sediments. J. Environ. Radioact. 102, 185–192. https://doi.org/10.1016/j.jenvrad.2010.11.011
• Malik, F., Matiullah, M., Akram, M., Rajput, M.U., 2010, Measurement of natural radioactivity in sand samples collected along the bank of rivers Indus and Kabul in northern Pakistan. Radiat. Protect. Dosim. 143, 97–105. doi: 10.1093/rpd/ncq356.
• Ramasamy, V., Sundarrajan, M., Paramasivam, K., Suresh, G., 2015. Spatial and depth wise characterization of radionuclides and minerals in various beach sediments from high background radiation area, Kerala, India. Appl. Radiat. Isot. 95, 159–168.
• Seçkiner S., Akkurt, I., Günoglu K., 2017, Determination of 40K concentration in gravel samples from Konyaaltı Beach, Antalya. Acta Phys. Pol. A., Vol 132 (3-II), 1095-1097,doi: 10.12693/APhysPolA.132.1095.
• Akkurt, I., Gunoglu, K., & Arda, S. S. 2014. Detection efficiency of NaI (Tl) detector in 511–1332 keV energy range. Science and Technology of Nuclear Installations, Volume 2014, Article ID 186798.‏
• Veiga, R., Sanchez, N., Anjos, R.M., Macario, K., Bastos, J., Iguatemy, J.G., Aguiar, J.G., Santos, A.M., Mosquera, B., Carvlho, C., 2006, Measurement of natural radioactivity in Brazilian beach sands. Radiat. Meas. 41, 189–196. https://doi.org/10.1016/j.radmeas.2005.05.001
• UNSCEAR, United Nations Scientific Committee on the Effect of Atomic Radiation, 1988. Sources, effects and risk of ionizing radiation, United Nations, New York.
• Al-Trabulsy, H., Khater, A., Habbani, F., 2011. Radioactivity levels and radiological hazard indices at the Saudi coastline of the Gulf of Aqaba. Radiat. Phys. Chem. 80, 343–348.
• Beretka, J., Mathew, P.J., 1985. Natural radioactivity of Australian building materials, industrial wastes and by-products. Health Phys. 48, 87–95.
• ICRP, 1990. Publication 60. Recommendations of the International Commission on Radiological Protection, in ICRP Publication 60. Pergamon Press Annals of ICRP, Oxford, UK.