ABSTRACT

In the present study, the radioactivity levels of water samples collected from the main water supply network in Trabzon province and districts and soil samples taken from the vicinity of the water network were measured. An Alphaguard-PQ2000 radon gas detector was used to determine the seasonal radon gas level in the water samples. An HPGe detector was used to determine the level of radioactivity in soil and water samples. The average concentration of ²²²Rn in drinking water ranges from 0.56 ± 0.51 to 13.3 ± 5 Bq L^–1. In water samples, average gross alpha and gross beta values were measured as 8 ± 1 and 43 ± 1 mBq L^–1, respectively. The average concentrations of ²³⁸U, ²³²Th, ¹³⁷Cs, ⁴⁰K radionuclides in soil were measured as 51 ± 2, 21 ± 2, 16 ± 1, 28 ± 7 Bq m^–3, respectively. The average concentrations of ²³⁸U, ²³²Th, ¹³⁷Cs, ⁴⁰K radionuclides in drinking water were measured as 147 ± 5, 25 ± 2, 77 ± 2, 12 ± 2 mBq L^–1, respectively. When the radon concentrations for drinking water were examined, it was found that the radon concentration of the three samples was above the limit value (11 Bq L^–1) allowed by the US-EPA for drinking water. All other results are below the limit values.

摘要

在本研究中，测量了从特拉布宗省和地区的主要供水管网收集的水样以及取自供水管网附近的土壤样品的放射性水平。Alphaguard-PQ2000 氡气检测器用于确定水样中的季节性氡气含量。HPGe 检测器用于确定土壤和水样中的放射性水平。饮用水中²²² Rn的平均浓度范围为 0.56 ± 0.51 至 13.3 ± 5 Bq L ^–1。在水样中，平均总α 和总β 值分别测量为8 ± 1 和43 ± 1 mBq L ^–1。²³⁸ U、²³² Th、¹³⁷ Cs的平均浓度，土壤中⁴⁰ K 放射性核素的测量值分别为 51 ± 2、21 ± 2、16 ± 1、28 ± 7 Bq m ^–3。饮用水中²³⁸ U、²³² Th、¹³⁷ Cs、⁴⁰ K 放射性核素的平均浓度分别为 147 ± 5、25 ± 2、77 ± 2、12 ± 2 mBq L ^–1。在检测饮用水中氡浓度时，发现三个样品的氡浓度均高于美国环保署对饮用水的限制值（11 Bq L ^–1）。所有其他结果都低于限值。