High background radiation areas at Çanakkale in Turkey

Çetiner, M. Atıf; Gündüz, Handan; Ilgar, Ayhan

doi:10.1016/j.radphyschem.2011.02.024

Cited by 16 publications

(6 citation statements)

References 10 publications

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“…Each area was formed by a certain number of census sectors, which are small areas determined by the Brazilian Institute of Geography and Statistics (IBGE), to optimize the data sampling [15]. To estimate the annual effective average dose (E outdoor ) value for the selected area [16,17], due to terrestrial radiation sources, an outdoor occupancy fraction of 0.2 [18] and a Sv/Gy conversion coefficient of 0.7 [1,12,18,19] were used for the calculation.…”

Section: Methodsmentioning

confidence: 99%

Effective dose rate evaluation from natural gamma radiation in the region of Ribeirao Preto, SP-Brazil

et al. 2011

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Abstract. Assessments of natural gamma radiation were done for urban sites in the city of Ribeirão Preto -SP -Brazil, allowing to infer the average annual effective dose value for the population in these areas. The measurements were done using a vehicle with a mobile radioactivity measurement system, Eberline, with a plastic scintillation detector and a Global Position System (GPS), to collect measurements of gamma dose rate and its spatial distribution. Using the national census information, the stored data allowed mapping the radiometric measurements through the ArcGIS software, correlating the geographical coordinates with their respective dose rates. These maps illustrate how effective dose values are distributed within the selected areas and also correlate the collective dose values for these populations. Around 45,000 georeferenced effective dose values, ranging from 12.2 up to 59.8 nSv/h raised an average value of 0.034 ± 0.004 mSv/year, which is less than the worldwide average effective dose value of 0.07 mSv/year [12] (for outdoor exposures from terrestrial radiation sources) and less than the previous average values found in Brazil for the regions of Poços de Caldas, Guarapari, Andradas, Caldas and Meaípe [2,10].

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Section: Methodsmentioning

confidence: 99%

Effective dose rate evaluation from natural gamma radiation in the region of Ribeirao Preto, SP-Brazil

et al. 2011

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“…For most of the geothermal spring attractions in Central and Western Thailand, the assessed AEDEs for the users of geothermal waters were much lower than the annual radiation dose limit (1.45 mSv/year) for members of the public, while the Ratchaburi (RB1) had a higher AEDE (4.86 mSv/year) than the limit. For the local authorities and spa workers, the estimated AEDEs may exceed the lower reference limit when considering geothermal areas with natural background ra-diation levels higher than 1 mSv/year [38,39]. The ELCRs, estimated based on the AEDEs, are considered to produce stochastic effects.…”

Section: Effective Dose From the Natural Radiationmentioning

confidence: 99%

Hydrogeochemical characteristics and terrestrial radiation of geothermal spring attractions in Central and Western Thailand

Ngansom¹,

Mahapattanathai²,

Maksuwan³

et al. 2022

ScienceAsia

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The main objectives of this study were to evaluate the geochemical characteristics, reservoir temperatures (related to the natural ambient gamma radiation levels), and natural background radiation levels of the geothermal spring attractions in Central and Western Thailand. The hydrochemical properties of the geothermal waters revealed that K + -Na + bicarbonate dominates the geochemistry of these hot spring waters. Due to their chemical characteristics, the geothermal waters reflect the homogeneity of the geological formations, which indicates that limestone originated and mixed with shallow groundwater/freshwater. On the other hand, no significant correlations were found between the reservoir temperatures and naturally occurring background radiation levels. The natural background radiation levels were investigated at the main pool and 10 m from the main pool. In addition, the annual effective dose equivalent (AEDE) and excess lifetime cancer risk (ELCR) would be considered in the areas with low natural background radiation levels. The highest averages for the AEDEs and the ELCRs were discovered in the Ratchaburi Hot Spring (RB1), at approximately 0.48 and 1.90 mSv/year, respectively. Although the ELCR is slightly higher than the annual average effective dose (1.45 mSv/year) due to the natural background radiation, a preventive strategy should be considered to protect the effects on visitors' health.

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“…Kıyı şeridinin doğal radyoaktivitesi ve oluşturduğu dozlarla ilgili dünyanın çeşitli ülkelerinde ve bölgelerinde farklı ve çok sayıda çalışma yapılırken, Türkiye'de çok az çalışma [3][4][5][6][7][8][9], yapılmıştır. Türkiye, Avrupa'daki en büyük plaj kumu sistemine sahiptir.…”

Section: Introductionunclassified

Kıyı Kumlarının Doğal Radyoaktivitesi ve Doz Dağılımı: Urla Örneği

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2019

Süleyman Demirel Üniversitesi Fen Bilimleri Enstitüsü Dergisi

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Özet: Çevresel radyoaktivite ölçümlerinin temel amacı, insanların doğal kaynaklardan aldıkları radyasyon dozunun tayini ve insan sağlığı üzerindeki etkilerinin belirlenmesidir. İnsanlar tarafından alınan ortalama doza en büyük katkı, doğal radyasyondan gelmektedir (%86). Doğal radyasyon kaynaklarından alınan yıllık ortalama etkin doz 2.4mSv'dır. Bu dozun büyük bir kısmını dünyanın oluşumundan beri var olan primordial radyonüklitler (238 U, 232 Th ve bozunum ürünleri ve 40 K) oluşturmaktadır. İnsanların doğal kaynaklardan aldıkları radyasyon dozlarının belirlenmesine yönelik çalışmalar son yıllarda yoğunluk kazanmıştır. Kıyı şeridinin radyoaktivitesi ve doz hızları ile ilgili dünyanın çeşitli bölgelerinde birçok çalışma yapılmıştır. Fakat Türkiye'de yeterli sayıda çalışma bulunmamaktadır. Bu çalışmada, Urla ilçesinin kıyı şeridi boyunca alınan plaj kumu örneklerinin doğal radyonüklit (226 Ra, 232 Th, 40 K) aktivite konsantrasyonları HPGe gama spektrometre sistemi ile ölçülmüş ve bu bölgede yaşayan insanlar tarafından maruz kalınan doz hızları hesaplanmıştır. Elde edilen sonuçlar, dünya ortalamaları ve farklı illerde yapılan çalışmalarla karşılaştırılmıştır. Sonuçlardan görülmüştür ki, Urla ilçesi kıyı şeridinin gama doz hızları insan sağlığı açısından bir risk oluşturmamaktadır.

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High background radiation areas at Çanakkale in Turkey

Cited by 16 publications

References 10 publications

Effective dose rate evaluation from natural gamma radiation in the region of Ribeirao Preto, SP-Brazil

Effective dose rate evaluation from natural gamma radiation in the region of Ribeirao Preto, SP-Brazil

Hydrogeochemical characteristics and terrestrial radiation of geothermal spring attractions in Central and Western Thailand

Kıyı Kumlarının Doğal Radyoaktivitesi ve Doz Dağılımı: Urla Örneği

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