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| 厚源法测量水中总α放射性 |
| Determination of Gross Alpha Activity in Water by Thick Source Method |
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| DOI： |
| 中文关键词: 总α放射性 厚源法 地表水 废水 |
| 英文关键词: Gross alpha activity Thick source method Surface water Wastewater |
| 基金项目:国家环境保护标准制修订基金资助项目（12072） |
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| 中文摘要: |
| 采用厚源法测定地表水、废水中总α放射性，并通过6家实验室间比对验证厚源法的重复性、再现性和准确性。结果表明：方法探测下限不高于0.043 Bq/L。对总α放射性水平为0046 Bq/L的地表水和256 Bq/L的废水样品重复性限为0021 Bq/L和529 Bq/L，再现性限为0022 Bq/L和869 Bq/L，加标回收率最终值为（104±176）%和（103±116）%。 |
| 英文摘要: |
| Gross alpha activity in surface water and waste water was determined by thick source method. The repeatability, reproducibility and accuracy of the method were verified by six laboratories. The results showed the method lower detection limit was not more than 0.043 Bq/L. For the surface water with the gross alpha activity of 0.046 Bq/L and the waste water with the gross alpha activity of 25.6 Bq/L, the repeatability limits were 0.021 Bq/L and 5.29 Bq/L, the reproducibility limits were 0.022 Bq/L and 8.69 Bq/L, the end value of recoveries were(104±17.6）% and（103±11.6）%, respectively. |
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