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    Determination of radon concentration levels in well water in Konya, Turkey
    (OXFORD UNIV PRESS, 2013) Erdoğan, M.; Eren, N.; Demirel, S.; Zedef, Veysel
    Radon (Rn-222) measurements were undertaken in 16 samples of well water representing different depths and different types of aquifers found at the city centre of Konya, Central Turkey. The radon activity concentrations of the well water samples collected in the spring and summer seasons of 2012 were measured by using the radon gas analyser (AlphaGUARD PQ 2000PRO). The radon concentrations for spring and summer seasons are 2.290.17 to 27.251.07 and 1.440.18 to 27.451.25 Bq l(1), respectively. The results at hand revealed that the radon concentration levels of the waters strictly depend on the seasons and are slightly variable with depth. Eleven of the 16 well water samples had radon concentration levels below the safe limit of 11.11 Bq l(1) recommended by the United States Environmental Protection Agency. However, all measured radon concentration levels are well below the 100 Bq l(1) safe limit declared by the World Health Organisation. The doses resulting from the consumption of these waters were calculated. The calculated minimum and maximum effective doses are 0.29 and 5.49 Sv a(1), respectively.
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    RADON IN SPRING WATER IN THE REGION OF SEYDISEHIR OF KONYA PROVINCE, TURKEY
    (OXFORD UNIV PRESS, 2017) Erdoğan, M.; Manisa, K.; Zedef, Veysel
    Water samples for radon-gas analyses were collected from springs in and around the town of SeydiAYehir. Radon concentration in the spring water has been measured using the AlphaGUARD PQ 2000PRO radon detector. Radon activity results varied from 1.85 to 99.27 Bq l(-1). The radon level at the measurement points could have been controlled by local geological conditions (i.e. faults) and human activities. We also calculated annual effective doses resulting from the consumption of these water samples.
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    Risk analysis and annual effective dose due to terrestrial and cosmic radiation in the region of Niğde Province (Turkey)
    (RAD Association, 2019) Erdoğan, M.; Manisa, K.; Bircan, H.; Çevik, İ.; Bingöldağ, N.; Bıyık, R.; Zedef, Veysel
    The radiation exposure for people and all living things is inevitable. Most of these exposures are due to natural sources. Terrestrial and cosmic radiation sources are the most important contribution to these exposures which originated from the fractionation of U-238, Th-232, gamma radiation of K-40 and high-energy cosmic particles incident on the earth’s atmosphere. The main contribution to these exposures comes from terrestrial sources. Terrestrial radionuclides are found in various concentrations in the crust of the earth depending on geological conditions of the region. They also cause exposure risks externally due to their gamma-ray emissions. This study assesses the terrestrial and cosmic radiation dose rates from the naturally occurring radionuclides in the region of Niğde province of Turkey. The measurements were performed on the surface soil using NaI(Tl) scintillation type gamma-ray detector. The external annual effective doses and cancer risk for people living in the region are also calculated from such terrestrial and cosmic gamma radiation dose rates for each individual. © 2019 RAD Association. All rights reserved.