Türkiye’nin Doğu Karadeniz Bölgesinde Yetişen Karayemiş Bitkisinin (Prunus laurocerasus L.) Meyve ve Toprak Örneklerinin Radyolojik Değerlendirilmesi

Year 2019, , 229 - 238, 15.04.2019

Erkan Kırış

https://doi.org/10.17714/gumusfenbil.398293

Cited By: 3

Abstract

Bu
çalışma Doğu Karadeniz Bölgesinde on dört farklı istasyondan toplanan karayemiş
(Prunus laurocerasus L.)‘in meyve kısmında ve bu türün köklerindeki toprak
örneklerinde ²²⁶Ra, ²³²Th, ¹³⁷Cs ve ⁴⁰K
radyonüklid konsantrasyon sonuçlarını göstermektedir. Karayemişin meyve
kısmında ²²⁶Ra, ²³²Th, ¹³⁷Cs ve ⁴⁰K’ın
ortalama aktivite konsantrasyonları sırasıyla 1.75, 1.03, 2.07 ve 215.38 Bq kg^-1(kuru
ağırlık)’dır. Toprak örneklerinde ²²⁶Ra, ²³²Th ve ⁴⁰K’ın
ortalama aktivite konsantransyonları Dünya ortalaması değerlerinden daha düşük
olarak belirlenmiştir. Karayemiş meyvesi ve toprak örneklerinde en yüksek ¹³⁷Cs
radyonüklid konsantrasyonu Rize Merkez istasyonunda gözlemlenmiştir. Bunlara ek
olarak, karayemişin tüketimine bağlı olarak ²²⁶Ra, ²³²Th,
¹³⁷Cs ve ⁴⁰K’ın günlük alımı, yıllık alınan etkin doz ve
kanserojen risk değerleri hesaplanmış ve uluslararası değerlerle karşılaştırılmıştır.
Ayrıca toprak örneklerinde radyum eşdeğer aktivitesi, soğurulmuş doz oranı, dış
tehlike indeksi ve yıllık etkin doz eşdeğeri hesaplanmıştır. Bu hesaplamalara
ilaveten topraktan karayemişin meyve kısmına geçen ²²⁶Ra, ²³²Th,
¹³⁷Cs ve ⁴⁰K radyonüklidleri için transfer faktörleri
belirlenmiştir. Bu çalışmada elde edilen sonuçlar kanserojen risk ve radyolojik
etki parametre değerlerinin herhangi bir risk taşımadığını göstermektedir.

Keywords

Günlük alım dozu, HPGe dedektör, Karayemiş, Radyoaktivite, Transfer faktörü

Radiological Evaluation of fruit and soil samples of Cherry Laurel Plant (Prunus laurocerasus L.) Growing in the Eastern Black Sea Region of Turkey

Abstract

This study presents
the results of ²²⁶Ra, ²³²Th, ¹³⁷Cs and ⁴⁰K
radionuclide concentrations in the fruit part of cherry laurel (Prunus
laurocerasus L.) and soil samples in root of this species were collected from
fourteen different stations in the Eastern Black Sea Region. The mean activity
concentrations of ²²⁶Ra, ²³²Th, ¹³⁷Cs and ⁴⁰K
in the fruit part of cherry laurel were 1.75, 1.03, 2.07 and 215.38 Bq kg^-1,
respectively. The mean activity concentrations of ²²⁶Ra, ²³²Th
and ⁴⁰K in soil samples were determined to be lower than the world
average value. The highest ¹³⁷Cs radionuclide concentration in fruit
of cherry laurel and soil samples was monitored in the Rize center location. In
addition, radiological impact parameters such as daily intake of ²²⁶Ra,
²³²Th, ¹³⁷Cs and ⁴⁰K, annual committed
effective dose and carcinogenic risk due to the consumption of cherry laurel
were calculated and compared with the international data. The radium equivalent
activity (Ra_eq), the absorbed dose rate (D), the external hazard
index (H_ex) and the annual effective dose equivalent (AEDE) for soil
samples were also evaluated. Moreover, transfer factors of ²²⁶Ra, ²³²Th,
¹³⁷Cs and ⁴⁰K from soil to fruit part of cherry laurel
were determined. The results indicate that the lifetime cancer risk and the
radiological impact parameters values in the samples from the area studied in
this present work is not significant.

Keywords

Daily intake dose, HPGe detector, Cherry laurel, Radioactivity, Transfer factor

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