Abstract This research explores the measurement of background nuclear radiation, rate of exposure and the radiological risk for the inhabitants of South-western Nigeria. The measurement was carried out using Rad*Scanner model 500VBR, which measures radiation dose in count per minute. The mean absorbed dose rate ranges between 147.26 ± 8.13 nGy h−1 and 228.20 ± 20 nGy h−1, the annual and collective annual outdoor effective dose equivalent, with collective health detriment were estimated using the obtained data. The mean annual outdoor effective dose equivalent was estimated at 268.37 ± 38.25 µSv y−1. This value is below 1 mSv y−1 limit recommended by ICRP but greater than 0.1 mSv y−1 recommended by WHO. Using a population of 3,441,024, the mean collective effective dose equivalent was estimated at 923.46 ± 131.619 Man-Sv y−1. The collective health detriment was estimated to be approximately 15 men which could vary depending on hours of exposure.

中文翻译：

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尼日利亚翁多州选定城市的背景核辐射及其健康影响评估

摘要 本研究探讨了对尼日利亚西南部居民的背景核辐射、暴露率和放射风险的测量。测量是使用 Rad*Scanner 500VBR 型进行的，它以每分钟计数的形式测量辐射剂量。平均吸收剂量率范围在 147.26 ± 8.13 nGy h-1 和 228.20 ± 20 nGy h-1 之间，年和集体年室外有效剂量当量，使用获得的数据估计集体健康危害。年平均室外有效剂量当量估计为 268.37 ± 38.25 µSv y−1。该值低于 ICRP 推荐的 1 mSv y−1 限值，但高于 WHO 推荐的 0.1 mSv y−1。使用 3,441,024 人口，平均集体有效剂量当量估计为 923.46 ± 131.619 Man-Sv y−1。