In this study, the activity concentrations of naturally occurring ²³⁸U, ²³²Th and ⁴⁰K and anthropogenic ¹³⁷Cs radionuclides were measured for 56 soil and beach sand samples collected from the Princes’ Islands (Istanbul) in the Sea of Marmara, using a gamma-ray spectrometer. In each case, the outdoor gamma-ray dose rates in air were measured at the coordinates where the samples were collected, using a portable gamma-ray detector. In addition, the ²¹⁰Po specific activity concentrations were measured for 13 different types of fish and 3 black mussel samples that are consumed in the region, using an alpha spectrometer. The mean activity concentrations of natural ²³⁸U, ²³²Th and ⁴⁰K and artificial ¹³⁷Cs radionuclides were calculated to be 33.8 ± 0.5 Bq kg⁻¹, 19.3 ± 0.3 Bq kg⁻¹, 429.5 ± 4.5 Bq kg⁻¹ and 8.9 ± 0.1 Bq kg⁻¹, respectively, in the soil and beach sand samples. Activity concentration contour maps of the Princes’ Islands (Istanbul) were constructed. The mean annual effective dose values for natural and artificial radioactive nuclide activity concentrations were determined to be 55.4 μSv y⁻¹ and 1.2 μSv y⁻¹, respectively. The average outdoor gamma-ray dose rate measured in the air was 0.68 mSv y⁻¹. The mean activity concentrations of ²¹⁰Po in the fish and mussel samples were measured to be 16.2 ± 1.9 Bq kg⁻¹ and 516.1 ± 25.8 Bq kg⁻¹. The average annual effective ingestion doses due to ²¹⁰Po from the consumption of these seafoods were calculated to be 106.9 μSv y⁻¹ and 619.4 μSv y⁻¹, respectively. The results of this study were compared with the limits proposed by UNSCEAR, ICRP and the values obtained in other similar studies worldwide.

在这项研究中，使用伽马测量了从马尔马拉海王子岛（伊斯坦布尔）收集的56个土壤和海滩沙样，测量了天然存在的²³⁸ U，²³² Th和⁴⁰ K和人为¹³⁷ Cs放射性核素的活动浓度。射线光谱仪。在每种情况下，使用便携式伽马射线探测器在采集样品的坐标处测量空气中的室外伽马射线剂量率。此外，使用α光谱仪测量了该地区消费的13种不同类型的鱼和3个黑贻贝样品的²¹⁰ Po比活度浓度。天然²³⁸ U，²³²的平均活动浓度Th和⁴⁰ K和人造^137个计算Cs的放射性核素为33.8±0.5公斤贝^-1，19.3±0.3贝千克^-1，429.5±4.5贝千克^-1和8.9±0.1贝千克^-1分别，在土壤中和沙滩沙样。绘制了王子岛（伊斯坦布尔）的活动浓度等值线图。天然和人工放射性核素活度浓度的年平均有效剂量值分别确定为55.4μSvy ^-1和1.2μSvy ^-1。在空气中测得的平均室外伽玛射线剂量率为0.68 mSv y ^-1。平均活动浓度为²¹⁰鱼和贻贝样品中的Po分别为16.2±1.9 Bq kg ^-1和516.1±25.8 Bq kg ^-1。从这些海鲜的消费中获得的²¹⁰ Po导致的年平均有效摄入剂量经计算分别为106.9μSvy ^-1和619.4μSvy ^-1。将该研究的结果与UNSCEAR，ICRP提出的限值以及在世界范围内其他类似研究中获得的值进行了比较。