In this study, three methods to measure activity concentrations of radionuclides through high resolution gamma spectrometry are developed, optimized, and tested on drinking water samples. Two pre-concentration methods (partial evaporation and ion-exchange resins) were optimized for accuracy, precision, detection limits, costs, preparation, and measurements times. A new sampling method for ²²²Rn was designed and optimized to directly sample water from the tap, reducing and minimizing losses of radon during the sampling. A total number of 85 water samples were collected between 2017 and 2019 in collaboration with two drinking water suppliers in a wide area (~2000 km²) of the Veneto region, northeast Italy. These are the first results of radionuclides activity concentration in drinking water concerning a large extension in the foothill Veneto region. Finally, this study provides a first attempt of determining the spatial distribution and seasonal variations of radon activity concentration in drinking water in the study area.

在这项研究中，开发，优化和测试了三种通过饮用水伽玛光谱法测量放射性核素活度浓度的方法。优化了两种预浓缩方法（部分蒸发和离子交换树脂），以提高准确性，精密度，检测限，成本，制备和测量时间。设计并优化了一种新的²²² Rn采样方法，可以直接从水龙头中采样水，从而减少并最小化ra气在采样过程中的损失。在2017年至2019年期间，与两家饮用水供应商合作，在广阔的区域（约2000 km ^2）中收集了85个水样），位于意大利东北部的威尼托地区。这些是饮用水中放射性核素活度浓度的首次结果，涉及山麓威尼托地区的大范围扩展。最后，这项研究为确定研究区域饮用水中ra活度浓度的空间分布和季节变化提供了首次尝试。