ENVIRONMENTAL RADIOACTIVITY MEASUREMENTS IN BARTIN PROVINCE, NORTH ANATOLIA REGION

Yıl 2019, Cilt: 31 Sayı: 1, 42 - 48, 26.06.2019

Gürsel Karahan Enis Kapdan Nesli Bingöldağ Berna Ataksor Halim Taşkın Nilgün Orhan Recep Bıyık

Öz

The
aim of this study is to determine the background radioactivity levels and
assess the relevant health risks for Bartın province located north coast of
Turkey. For this purpose the collected soil samples were analyzed by the
method of gamma spectrometry, outdoor gamma dose rates were investigated by
in-situ measurements and the collected drinking water samples were analyzed by
proportional counter with gas flow. The average activity of radionuclides ²²⁶Ra,
²³²Th, ⁴⁰K, and ¹³⁷Cs in soil were determined
as 20.2±7.3, 26.9±10.5, 445±175, 6.4±6.4 Bq kg^-1 respectively for Bartın
province. The mean outdoor absorbed gamma dose rate was measured 1 m away from
the ground as 56±15 nGy h^-1
for the region. The average gross alpha and beta activity for drinking
water were found to be 0.039±0.048 and 0.135±0.403 Bq L^-1
respectively. The average annual effective dose value due to cosmic,
terrestrial radiations and alpha-beta activity in water was calculated as 0.03±0.01,
0.04±0.01 and 0.02±0.03 mSv respectively for people living in the region.
Spatial distribution map of each
radiologic parameter plotted for the region is presented in the paper.

Anahtar Kelimeler

Bartın, cancer risk, radionuclide, gamma dose rate, gross alpha, gross beta, biological effective radiation dose

KUZEY ANADOLU BÖLGESİNDE BULUNAN BARTIN İLİNDE ÇEVRESEL RADYOAKTİVİTE ÖLÇÜMLERİ

Öz

Bu çalışmanın amacı, Türkiye'nin kuzey sahilindeki Bartın ili için fon
radyoaktivite düzeylerini belirlemek ve ilgili sağlık risklerini
değerlendirmektir. Bu amaçla toplanan toprak örnekleri gama spektrometresi
yöntemi ile analiz edilmiş, dış ortamdaki gama doz oranları yerinde ölçümlerle
araştırılmış ve toplanan içme suyu örnekleri gaz akışlı orantılı sayaç ile
analiz edilmiştir. Topraktaki ²²⁶Ra, ²³²Th, ⁴⁰K
ve ¹³⁷Cs radyonüklitlerinin ortalama aktivitesi, Bartın ili için
sırasıyla 20.2 ± 7.3, 26.9 ± 10.5, 445 ± 175, 6.4 ± 6.4 Bq kg^-1
olarak belirlenmiştir. Bölge için ortalama yerden 1 m yükseklikte havada
absorbe edilen gama doz hızı, 56 ± 15 nGy h^-1 olarak ölçülmüştür.
İçme suyu için ortalama toplam alfa ve beta aktivitesi sırasıyla 0.039 ± 0.048
ve 0.135 ± 0.403 BqL^-1 olarak bulunmuştur. Bölgede yaşayanlar için
kozmik, karasal radyasyonlar ve sudaki alfa-beta aktivitesine bağlı ortalama
yıllık efektif doz değerleri, sırasıyla, 0.03 ± 0.01, 0.04 ± 0.01 ve 0.02 ±
0.03 mSv olarak hesaplanmıştır. Her bir radyolojik parametrenin bölge için
çizilen dağılım haritası makalede sunulmaktadır.

Anahtar Kelimeler

Bartın, kanser riski, radyonüklid, gama doz hızı, toplam alfa, toplam beta, biyolojik etkin radyasyon dozu

Kaynakça

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