Türkiye’nin Kahramanmaraş İlinde Soğurulan Gama Doz Seviyesinin Belirlenmesi

Kahramanmaraş İli ve çevresinde 118 farklı bölgede açık havada soğurulan gama radyasyon doz düzeyini belirlemek için insanlarda gonad (üreme organları) hizasında yerden yaklaşık 1m yükseklikte Eberline marka portatif dedektörle ölçümler alınmıştır. Her bölgede ölçümler alınırken 5 metre yarıçapında üç farklı okuma yapılmış ve bu üç değerin ortalaması alınarak her bir ölçüm bölgesi için gama doz değerleri belirlenmiştir. Kahramanmaraş ili geneli için gama dozu ölçümlerinin değeri 32,7 nGy/s ile 96,4 nGy/s arasında bulunmuş olup, aritmetik ortalaması 64,8 nGy/s olarak hesaplanmıştır. Soğurulan gama radyasyon dozu kullanılarak hesaplanan yıllık etkin doz eşdeğerinin ortalama değeri ise 79,5 μSv/y olarak hesaplanmıştır. Kahramanmaraş ilinde yaşam boyu kanser risk değerleri ICRP 103, BEIR VII ve ICRP 60 için yüzdelik ortalamaları sırasıyla 0,032, 0,036 ve 0,040 olarak bulunmuştur. Elde edilen sonuçlarla Türkiye’de diğer illerde yapılan benzer çalışmaların sonuçları ve dünya ortalamaları ile karşılaştırılmıştır.

Determination of Outdoor Absorbed Gamma Dose Rates of Kahramanmaraş Province, Turkey

Outdoor absorbed gamma dose rates were measured in 118 different regions at a height of 1 mabove the ground in the gonad (genitals) level in humans in Kahramanmaraş province and its vicinity usingEberline portable detector. Outdoor gamma dose rates varied from 32.7 nGy/h and 96.4 nGy/h with anarithmetic average of 64.8 nGy/h. The average value of the corresponding annual effective dose rate wasestimated as 79.5 μSv/y. Lifetime cancer risk values estimated according to ICRP 103, BEIR VII and ICRP60 were found to be 0.032, 0.036 and 0.040 respectively.

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