Uranium is a naturally occurring radioactive element. The higher concentrations of U in waters can cause chemical as well as radiological toxicity. In the present study 48 water samples were collected from the drinking/ground water sources in Narsipatnam Revenue division of Visakhapatnam District of Andhra Pradesh during pre and post monsoon seasons. Distribution of U has been measured and consequent ingestion dose was assessed. The observed U values range from < 0.2 to 25.4 ppb with a mean value of 4.9 ppb during pre monsoon season and U values range from < 0.2 to 19.4 ppb with a mean value of 2.7 ppb during post monsoon season. These values are compared with the AERB and WHO guideline values of 60 ppb and 30 ppb, respectively. The research results indicated that the waters are safe for drinking and domestic purposes.

中文翻译：

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印度安得拉邦维沙卡帕特南区 Narsipatnam 收入部门饮用水/地下水中铀的分布和随后的摄入剂量

铀是一种天然存在的放射性元素。水中较高浓度的 U 会导致化学和放射毒性。在本研究中，在季风季节前后，从安得拉邦维沙卡帕特南区 Narsipatnam 收入部门的饮用水/地下水源收集了 48 个水样。已经测量了 U 的分布并评估了随后的摄入剂量。观测到的 U 值范围为 < 0.2 至 25.4 ppb，季风前季平均值为 4.9 ppb，U 值范围为 < 0.2 至 19.4 ppb，季风季后平均值为 2.7 ppb。这些值分别与 60 ppb 和 30 ppb 的 AERB 和 WHO 指导值进行比较。研究结果表明，这些水域可安全饮用和生活。