针对印度西孟加拉邦普鲁利亚地区阿贾德亚山及周边地区的不同地点进行了一项筛选调查，使用AlphaGUARD氡监测仪测量饮用水中的氡浓度。结果显示，地下水中获得的222Rn浓度在5.71±0.29至579.47±23.18 Bq/l之间，平均为110.00±6.61 Bq/l。将我们的结果与国际推荐参考水平进行比较后发现，大多数这些管井的饮用水可能对当地人的健康构成重要威胁。相关性研究表明，管井深度对水样中的氡水平有显著影响。根据估算的每年60 l/yr和1642.50 l/yr的水消耗量计算，大多数样本（约70%和96%）的年有效氡剂量都较高，超过了世界卫生组织（WHO）和欧盟委员会规定的100 μSv/yr参考剂量限值。此外，与这些管井相关的超额终身癌症风险（ELCR）值对当地居民的健康构成严重威胁。本研究的首要目标是制作该地区的氡分布图，并找到地下水中氡浓度升高的可能原因。这类工作可能在提醒当地人类暴露于氡的方面发挥非常关键的作用。请求印度当地卫生官员和水质监管机构采取必要措施，保护当地人民免受氡水危害。© 2023作者以独家许可给Springer Nature B.V.

A screening survey has been carried out to measure the radon concentration in drinking water at various locations of Ajodhya hill and surrounding areas in Purulia district of West Bengal, India, using AlphaGUARD radon monitor. The obtained 222Rn concentration in ground water varies from 5.71 ± 0.29 to 579.47 ± 23.18 Bq/l with an average of 110.00 ± 6.61 Bq/l. Comparison between our results with the internationally recommended reference levels reveals that drinking of water from the majority of these tube-wells can pose significant health risks to the local people. Correlation study indicates that tube-well depth has significant influence on the radon level in water samples. Using 60 l/yr and 1642.50 l/yr water consumption estimated annual effective radon doses for most of the samples (almost 70% and 96%, respectively) are high compared to the World Health Organization (WHO) and the European Union (EU) Commission prescribed reference dose limit of 100 μSv/yr. Also, the evaluated Excess Lifetime Cancer Risk (ELCR) values associated with the tube-wells are showing serious threat to the health of the locals.The primary goal of this work is to develop a radon profile map of this area and to find out the possible reasons behind the elevated radon level in ground water. This type of work may play a very crucial role to aware the locals in perspective of human exposure to radon. The local health officials and the water quality regulators of India are requested to take necessary steps for protecting the local people from water radon hazard.© 2023. The Author(s), under exclusive licence to Springer Nature B.V.