Department of Physics, Bangalore University, Jnana Bharathi Campus, Bengaluru 560056, Karnataka, India.
Department of Physics, M. S. Ramaiah Institute of Technology, Bengaluru 560054, Karnataka, India.
Radiat Prot Dosimetry. 2024 Jul 17;200(11-12):1084-1089. doi: 10.1093/rpd/ncae044.
Uranium occurs naturally in groundwater and surface water. Being a radioactive element, high uranium concentration can cause impact on human health. The health effects associated with consumption of uranium through water includes increased cancer risk and kidney toxicity. In view of this, an attempt was made in the present study to establish the level of radiological and chemical toxicity of uranium. Radiological toxicity was evaluated in terms of lifetime cancer risk and chemical toxicity through hazard quotient. For the said purpose, groundwater samples from the selected villages of the surrounding region of the Manchanabele reservoir, southwest of Bengaluru, were collected. The collected groundwater samples were analysed for Uranium mass concentration using Light emitting diode (LED) fluorimeter and is found to range from 0.88 to 581.47 ppb with a GM of 20.82 ppb. The result reveals that ~ 66% of the samples show concentration of uranium within the safe limit of 30 ppb as set by the World Health Organisation. The radiological risk estimated in terms of lifetime cancer risk is in the range of 0.0028 × 10-3 to 1.85 × 10-3 with a GM of 0.066 × 10-3. The chemical toxicity risk measured as lifetime annual daily dose is found to range from 0.03 to 21.65 μg per kg per d with a GM of 0.77 μg per kg per d.
铀天然存在于地下水和地表水。作为一种放射性元素，铀的高浓度会对人类健康造成影响。通过水摄入铀与健康相关的影响包括癌症风险增加和肾毒性。有鉴于此，本研究试图确定铀的放射性和化学毒性水平。通过危害系数评估放射性毒性的终生癌症风险和化学毒性。为此，采集了班加罗尔西南部曼查纳贝勒水库周边选定村庄的地下水样本。使用发光二极管（LED）荧光计分析采集的地下水样本中的铀质量浓度，结果范围为 0.88 至 581.47 ppb，平均值为 20.82 ppb。结果表明，约 66%的样本显示铀浓度在世界卫生组织设定的 30 ppb 安全限值内。根据终生癌症风险估计的放射性风险在 0.0028×10-3 至 1.85×10-3 之间，平均值为 0.066×10-3。以终生年平均日剂量衡量的化学毒性风险范围为 0.03 至 21.65μg/kg/d，平均值为 0.77μg/kg/d。
