Kübra BAYRAK, Zeki Ünal YÜMÜN, Merve ÇAKAR

Investigation of Outdoor Gamma Dose Rates in Yalova, Turkey

Radioactivity measurements were performed, at the Yalova (Turkey), part of the Marmara Sea, for natural radiation using ascintillation detector SP6 (via using portable counter ESP2, Eberline). Based on the measurement results, the lowest outdoor gammaconcentration was calculated to 27.70 nGy/h while the highest one calculated to 66.00 nGy/h. And, the average of the measuredgamma dose rates calculated to 48.13 nGy/h while the annual effective dose equivalent was calculated to 59.02 μSv/y. Mean value ofexcess lifetime cancer risk also obtained 2.07 $10^{-4}$from using measurement area. The results checked against the world averagedetermined by UNSCEAR. It was concluded that the calculated gamma dose values in Yalova are below the world average.

PDF

___

[1] UNSCEAR. (2008). Sources and effects of Ionising Radiation, pp 5-6
[2] IAEA (2011). Radioactive Particles in the Environment: Sources, Particle Characterization and Analytical Techniques. pp. 8-10
[3] http://yerbilimleri.mta.gov.tr/anasayfa.aspx
[4] Kazel E. (2014). Yalova City Geography. Master Thesis.
[5] http://www.yalova.bel.tr/kent-rehberi/yalova-hakkinda
[6] https://biruni.tuik.gov.tr/medas/?kn=95&locale=tr
[7] Nguyen Duc Tuan et all. (2012). Design and construction of the portable gamma-ray spectrometer for environmental dose rate measurement and radioisotope identification
[8] Taskin H. (2009). Radionuclide concentrations in soil and lifetime cancer risk due to gamma radioactivity in Kirklareli, Turkey. 100 (2009) 49–53
[9] ICRP., ICRP Publication 103 recommendations of the ICRP: annals of the ICRP volume 37/2-4. International Commission on Radiological Protection. Pergamon Pres, 2007.
[10]Karahan G. (2000). Assessment of gamma dose rates around Istanbul (Turkey). 47 (2000) 213-221
[11]Kam E. (2007). Environmental radioactivity measurements in Kastamonu region of northern Turkey. 65 (2007) 440–444
[12]Yarar Y. (2005). Environmental radioactivity concentrations of Tekirdag. 1276 (2005) 387-389
[13]Turgay M.E. (2015). Assessment of the Environmental Radioactivity in Hatay Region. University of Gaziantep Graduate School of Natural & Applied Sciences. Ph.D. Thesis
[14]Turgay, M. E. (2019). Cancer Risk Determination for IDA villages by using Annual Gamma Doses in Air, around Edremit & Ayvacık Districts; Balıkesir & Çanakkale, TURKEY. European Journal of Science and Technology, (15), 433-439.
[15]UNSCEAR report. (2000). Sources and Effects of Ionising Radiation pp. 90
[16]Yümün Z.Ü., Kam E., Önce M. (2019). Gamma Dose Values of Stratigraphic Units Surfaced in Behramkale (Çanakkale)-Zeytinli (Edremit – Balıkesir) Section of KazMountains. Journal of the Turkısh Chemical Society Section A: Chemistry. 7(1). 207-214.
[17]Kam E., Yümün Z.Ü., Önce M., Açıkgöz G. (2016). Gamma Dose Rate Values in the Kulakçayırı Natural Lake and the Vicinity (Aravutköy, İstanbul). Journal of Engineering Technology and Applied Sciences. 1(1). 29-33.
[18]Türkecan, A. and Yurtsever, A., 2002, 1:500.000 Scale Geological Maps of Turkey (İstanbul Map), General Directorate of Mieral Research and Explanation, No.1.
[19]Kam E., Yümün Z.Ü., Önce M. Ve Açıkgöz G. (2016). Gamma dose rate values in the Kulakçayırı natural lake and the vicinity (Arnavutköy, İstanbul). Journal of Engineering Technology and Applied Sciences. 1(1). 29-33.
[20]Yümün Z.Ü., Kam E. ve Önce M.(2019). Gamma dose values of stratigraphic unıts surfaced in Behramkale (Çanakkale) – Zeytinli (Edremit-Balıkesir) section of Kaz Mountains. Journal of Turkısh Chemical Society Section A: Chemistry. 7(1). 207- 214.
[21]Karataşlı M.(2018); Hatay ve Çevresinde Çevresel Gama Radyasyon Ölçümü. Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi. 780-785.