The presence of radionuclides in drinking water constitutes a health risk for humans, because the consumption of such water increases the likelihood of incurring cancer. In our laboratory a new methodological approach was developed, in order to evaluate the radioactivity content and to assess the radiological risk, through the calculation of the Indicative Dose (ID) due to ingestion, in the case of exceeding gross alpha (the most common situation of exceeding the parameter values for the screening ones). In this study, liquid scintillation counting (LSC) was employed to measure the activity concentration of gross alpha and beta in drinking water samples from springs and boreholes. The objective was to evaluate the ID if the gross alpha/beta activities acceeded the stipulated limit. Selective extraction of uranium was performed after which the sample were counted using the liquid scintillator. The resultant spectrum was then deconvoluted using the Peakfit Software. 238

中文翻译：

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饮用水放射性含量评估和放射风险评估：一种新的方法学方法

饮用水中存在放射性核素对人类构成健康风险，因为食用此类水会增加罹患癌症的可能性。在我们的实验室中，开发了一种新的方法学方法，以评估放射性含量，并通过计算因摄入引起的指示性剂量（ID）（超过总阿尔法（最常见的情况））来评估放射风险超过筛选参数的值）。在这项研究中，采用液体闪烁计数（LSC）来测量泉水和井眼饮用水样品中总α和β的活性浓度。目的是评估总的alpha / beta活动是否达到规定的限制。进行铀的选择性萃取，然后使用液体闪烁器对样品进行计数。然后使用Peakfit软件对得到的光谱进行反卷积。238