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首页> 美国卫生研究院文献>Springer Open Choice >Uranium isotopes in well water samples as drinking sources in some settlements around the Semipalatinsk Nuclear Test Site Kazakhstan
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Uranium isotopes in well water samples as drinking sources in some settlements around the Semipalatinsk Nuclear Test Site Kazakhstan

机译：哈萨克斯坦塞米巴拉金斯克核试验场周围某些定居点中井水样品中的铀同位素作为饮用水来源

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Radiochemical results of U isotopes (234U, 235U and 238U) and their activity ratios are reported for well waters as local sources of drinking waters collected from the ten settlements around the Semipalatinsk Nuclear Test Site (SNTS), Kazakhstan. The results show that 238U varies widely from 3.6 to 356 mBq/L (0.3–28.7 μg/L), with a factor of about 100. The 238U concentrations in some water samples from Dolon, Tailan, Sarzhal and Karaul settlements are comparable to or higher than the World Health Organization’s restrictive proposed guideline of 15 μg (U)/L. The 234U/238U activity ratios in the measured water samples are higher than 1, and vary between 1.1 and 7.9, being mostly from 1.5 to 3. The measured 235U/238U activity ratios are around 0.046, indicating that U in these well waters is of natural origin. It is probable that the elevated concentration of 238U found in some settlements around the SNTS is not due to the close-in fallout from nuclear explosions at the SNTS, but rather to the intensive weathering of rocks including U there. The calculated effective doses to adults resulting from consumption of the investigated waters are in the range 1.0–18.7 μSv/y. Those doses are lower than WHO and IAEA reference value (100 μSv/y) for drinking water.
机译：报告了作为当地饮用水来源的井水中U同位素（ 234 U， 235 U和 238 U）的放射化学结果及其活性比从哈萨克斯坦塞米巴拉金斯克核试验场（SNTS）十个定居点收集的水域。结果表明， 238 U的变化范围从3.6到356mBq / L（0.3-28.7μg/ L），变化系数约为100。多伦，泰兰，萨尔扎尔和卡乌尔定居点的一些水样与世界卫生组织提出的15μg（L）/ L的限制性指南相若或更高。被测水样品中的 234 U / 238 U活度比高于1，且在1.1至7.9之间变化，主要为1.5至3。 > 235 U / 238 U活度比约为0.046，表明这些井水中的U是天然来源。 SNTS周围某些聚落中 238 U浓度升高的原因可能不是由于SNTS核爆炸的临近尘埃，而是由于包括U在内的岩石的强烈风化那里。经研究水的消耗对成年人的计算出的有效剂量在1.0-18.7μSv/ y范围内。这些剂量低于WHO和IAEA的饮用水参考值（100μSv/ y）。

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