Activity concentrations of 226Ra, 232Th, 137Cs and 40K in Cystoseira barbata samples harvested from the Eastern Black Sea coast of Türkiye

Nilay Akçay

Makale detayları

Activity concentrations of 226Ra, 232Th, 137Cs and 40K in Cystoseira barbata samples harvested from the Eastern Black Sea coast of Türkiye

Yazarlar:

Nilay Akçay

Yayıncı:

Gumushane University

Ana Başlıklar:

Nükleer Fizik | Radyofizik

Dergi:

Gümüşhane Üniversitesi Fen Bilimleri Dergisi Vol.14 Issue 4, pp.1049-1057

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001333154

pISSN:

2146-538X

Anahtar kelimeler:

Özet:

 Macroalgae are important bioorganisms used in fish feed and food industry. In addition, macroalgae are used in studies to determine radioactive pollution levels in the seas. In this study, it was aimed to determine the activity concentrations of 226Ra, 232Th, 137Cs and 40K in Cystoseira barbata which is a brown macroalgae samples obtained from the Eastern Black Sea coast of Turkey. Gamma spectrometry analyzes of the samples were carried out with high purity germanium HPGe detector system in the Nuclear Physics laboratory of Recep Tayyip Erdoğan University. The average 226Ra, 232Th, 137Cs and 40K activity concentrations in the samples were found to be 11.2, 7.61, 2.74 and 690.7 Bq.kg-1, respectively. The average annual effective dose values resulting from these radionuclides were obtained as 3.14, 1.75, 0.04 and 4.28 µSv.y-1, respectively. Total annual effective dose values calculated with the contribution of all radionuclides were found to be in the range of 1.37-18.83 µSv.y-1. The calculated annual effective dose values are lower than 0.29 mSv.y-1, which is stated by UNSCEAR as the average annual effective dose received through ingestion of natural radionuclides, and the samples examined do not pose any radiological risk.

 Macroalgae are important bioorganisms used in fish feed and food industry. In addition, macroalgae are used in studies to determine radioactive pollution levels in the seas. In this study, it was aimed to determine the activity concentrations of 226Ra, 232Th, 137Cs and 40K in Cystoseira barbata which is a brown macroalgae samples obtained from the Eastern Black Sea coast of Turkey. Gamma spectrometry analyzes of the samples were carried out with high purity germanium HPGe detector system in the Nuclear Physics laboratory of Recep Tayyip Erdoğan University. The average 226Ra, 232Th, 137Cs and 40K activity concentrations in the samples were found to be 11.2, 7.61, 2.74 and 690.7 Bq.kg-1, respectively. The average annual effective dose values resulting from these radionuclides were obtained as 3.14, 1.75, 0.04 and 4.28 µSv.y-1, respectively. Total annual effective dose values calculated with the contribution of all radionuclides were found to be in the range of 1.37-18.83 µSv.y-1. The calculated annual effective dose values are lower than 0.29 mSv.y-1, which is stated by UNSCEAR as the average annual effective dose received through ingestion of natural radionuclides, and the samples examined do not pose any radiological risk.

 Macroalgae are important bioorganisms used in fish feed and food industry. In addition, macroalgae are used in studies to determine radioactive pollution levels in the seas. In this study, it was aimed to determine the activity concentrations of 226Ra, 232Th, 137Cs and 40K in Cystoseira barbata which is a brown macroalgae samples obtained from the Eastern Black Sea coast of Turkey. Gamma spectrometry analyzes of the samples were carried out with high purity germanium HPGe detector system in the Nuclear Physics laboratory of Recep Tayyip Erdoğan University. The average 226Ra, 232Th, 137Cs and 40K activity concentrations in the samples were found to be 11.2, 7.61, 2.74 and 690.7 Bq.kg-1, respectively. The average annual effective dose values resulting from these radionuclides were obtained as 3.14, 1.75, 0.04 and 4.28 µSv.y-1, respectively. Total annual effective dose values calculated with the contribution of all radionuclides were found to be in the range of 1.37-18.83 µSv.y-1. The calculated annual effective dose values are lower than 0.29 mSv.y-1, which is stated by UNSCEAR as the average annual effective dose received through ingestion of natural radionuclides, and the samples examined do not pose any radiological risk.

 Makroalgler, balık yemi ve gıda sanayinde kullanılan önemli biyoorganizmalardır. Ayrıca makroalglerden denizlerdeki radyoaktif kirlilik düzeylerinin belirlenmesi çalışmalarında yararlanılır. Bu çalışmada Türkiyenin Doğu Karadeniz kıyılarından toplanan kahverengi bir macroalg olan Cystoseira barbata numunelerinde 226Ra, 232Th, 137Cs ve 40K aktivite konsantrasyonlarının belirlenmesi amaçlandı. Örneklerin gama spektrometre analizleri Recep Tayyip Erdoğan Üniversitesi Nükleer Fizik laboratuvarında bulunan yüksek saflıktaki germanyum HPGe dedektör sistemiyle gerçekleştirildi. Numunelerdeki ortalama 226Ra, 232Th, 137Cs ve 40K aktivite konsantrasyonları sırasıyla 11.2, 7.61, 2.74 ve 690.7 Bq.kg-1 olarak bulundu. Bu radyonüklitlerden kaynaklanan ortalama yıllık etkin doz değerleri sırasıyla 3.14, 1.75, 0.04 ve 4.28 µSv.y-1 olarak elde edildi. Tüm radyonüklitlerin katkısı ile hesaplanan toplam yıllık etkin doz değerleri 1.37-18.8 µSv.y-1 aralığında bulundu. Hesaplanan yıllık etkin doz değerleri UNSCEAR tarafından doğal radyonüklitlerin sindirimi yoluyla alınan ortalama yıllık etkin doz değeri olarak belirtilen 0.29 mSv.y-1den düşüktür ve incelenen numuneler radyolojik açıdan herhangi bir risk teşkil etmemektedir.

Makale detayları

Activity concentrations of 226Ra, 232Th, 137Cs and 40K in Cystoseira barbata samples harvested from the Eastern Black Sea coast of Türkiye

Yazarlar:

Nilay Akçay

Yayıncı:

Gumushane University

Ana Başlıklar:

Nükleer Fizik | Radyofizik

Dergi:

Gümüşhane Üniversitesi Fen Bilimleri Dergisi Vol.14 Issue 4, pp.1049-1057

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001333154

pISSN:

2146-538X

Bioindicator

Black sea

Cystoseira barbata

Macroalg

RadioactivityBiyoindikatör

Karadeniz

Cystoseira barbata

Makroalg

Radyoaktivite

Sayı

Makale detayları

Yazarlar: Nilay Akçay

Yayıncı: Gumushane University

Ana Başlıklar: Nükleer Fizik | Radyofizik

Dergi: Gümüşhane Üniversitesi Fen Bilimleri Dergisi Vol.14 Issue 4, pp.1049-1057

Belge Tipi: Makale

Yayın Tarihi: 12/2024

Belge Dili: İngilizce

Document ID (Org No.): 2001333154

pISSN: 2146-538X

Sayı

Yazarlar:

Nilay Akçay

Yayıncı:

Gumushane University

Ana Başlıklar:

Nükleer Fizik | Radyofizik

Dergi:

Gümüşhane Üniversitesi Fen Bilimleri Dergisi Vol.14 Issue 4, pp.1049-1057

Belge Tipi:

Makale

Yayın Tarihi:

12/2024

Belge Dili:

İngilizce

Document ID (Org No.):

2001333154

pISSN:

2146-538X