Farklı Derinliklerdeki Toprak Örneklerinin Radon Salınım Hızlarının Belirlenmesine Yönelik Ön Çalışma

Öz

Kütahya, Türkiye’de bir inşaat alanında toprak yüzeyinden itibaren 20 cm aralıklarla beş farklı derinlikten toplanan toprak örneklerinin radon alan salınım hızı ve kütle salınım hızları E-Perm algıçları kullanılarak belirlenmiştir. Toprak örneklerinin radon konsantrasyonu akümülatör yöntemi kullanılarak belirlenmiştir. Toprak örneklerinin radon konsantrasyonu beş günlük analiz süresinde 34 ± 4,4 Bq.m-3 ile 86 ± 6,8 Bq.m-3 aralığında, ortalama 48,6 ± 5,1 Bq.m-3 olarak ölçülmüştür. Toprak örneklerinin radon alan salınım hızları 233,2 ± 24,4 mBq.m-2.h-1 ortalama ile 163,7 ± 21,3 ve 413,1 ± 32,6 mBq.m-2.h-1 aralığında hesaplanmıştır. Toprak örneklerinin radon kütle salınım hızları 32,9 ± 4,3 ve 83 ± 6,6 mBq.kg-1.h-1 aralığında ortalama 46,9 ± 4,9 mBq.kg-1.h-1 olarak bulunmuştur. Kapalı ortama örnekleme yapılan toprak örneklerinden 6,5 Bq.m-3’lük radon katkısı geldiği tahmin edilmektedir.

Anahtar Kelimeler

• Radon alan salınım hızı
• raadon kütle salınım hızı
• kapalı ortama radon katkısı tahmini

A Preliminary Study to Determine the Radon Exhalation Rates of Soil Samples at Different Depths

Öz

The radon area exhalation rate and mass exhalation rate of the soil samples collected from five different depths from soil surface with 20 cm intervals of a construction site at Kütahya, Turkey was determined by using the E-Perm detectors. Accumulator method is used to determine the radon concentration of the soil samples. Radon concentration of the soil samples were measured between 34 ± 4.4 Bq.m-3 to 86 ± 6.8 Bq.m-3 with an average value of 48.6 ± 5.1 Bq.m-3 for five days analysis time. Radon area exhalation rate of the soil samples were calculated between 163.7 ± 21.3 and 413.1 ± 32.6 mBq.m-2.h-1 with an average of 233.2 ± 24.4 mBq.m-2 .h-1. Radon mass exhalation rate of the soil samples were found between 32.9 ± 4.3 to 83 ± 6.6 mBq.kg-1.h-1 with a mean value of 46.9 ± 4.9 mBq.kg-1.h-1. The radon contribution to the indoor air from soil samples is estimated as 6.5 Bq.m-3.

Anahtar Kelimeler

• Radon area exhalation rate
• Radon mass exhalation rate
• Indoor radon contribution estimation

Kaynakça

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