BackgroundIn recent years, attention has been drawn to radon gas as main risk factor for lung cancer. Radon is colourless, odourless and tasteless radioactive noble gas. To mitigate radon effects, water consume by populace needs to be conserved. Radon concentration in water and heavy metals concentrations in sediment samples from historical cold and warm springs at Ikogosi were determined using Durridge RAD-7 analyzer with RAD H2O accessory and atomic absorption spectrophotometer.ResultsThe mean activity concentration of radon in water samples ranged from 0.07 to 0.36 with overall mean value 0.20 Bq L−1, 35–210 with an overall mean value 75.9 Bq L−1 and 11.7–140.0 with an overall mean 79.4 Bq L−1 for bottled, cold and warm water samples respectively. The calculated total effective dose values were below 100 µSv year−1 recommended by WHO. The result of elemental analysis showed that the mean values of metals concentrations were Pb (2.9–11.8 mg kg−1), Cu (3.8–12.8 mg kg−1), Fe (945.0–2010.0 mg kg−1), Cd (0.6–1.7 mg kg−1) and Ni (0.3–2.6 mg kg−1).ConclusionsThe results revealed values not higher than recommended permissible limit and background values. The pollution load index, revealed that the overall contamination of metals indicated no significant pollution in all the studied samples.

中文翻译：

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使用不同矩阵对尼日利亚历史冷热泉的氡排放和重金属进行评估

背景近年来，氡气作为肺癌的主要危险因素受到关注。氡是无色、无臭、无味的放射性惰性气体。为了减轻氡效应，需要节约民众的用水量。使用带有RAD H2O附件和原子吸收分光光度计的Durridge RAD-7分析仪测定了Ikogosi历史冷泉和暖泉沉积物中氡浓度和重金属浓度。结果水样中氡的平均活度浓度为0.07至0.36瓶装水、冷水和温水样品的总体平均值分别为 0.20 Bq L-1、35-210、总体平均值为 75.9 Bq L-1 和 11.7-140.0、总体平均值为 79.4 Bq L-1。计算出的总有效剂量值低于 WHO 推荐的 100 µSv year−1。元素分析结果表明，金属浓度的平均值为 Pb（2.9-11.8 mg kg-1）、Cu（3.8-12.8 mg kg-1）、Fe（945.0-2010.0 mg kg-1）、Cd（0.6 –1.7 mg kg-1) 和 Ni (0.3–2.6 mg kg-1)。结论结果显示值不高于推荐的允许限值和背景值。污染负荷指数表明，所有研究样品中金​​属的总体污染表明没有显着污染。