| 格日勒满达呼,包玉龙,张帅,孙智超,哈日巴拉,许潇,刘祥,王成国.内蒙古地区饮用水中总α及天然放射性核素的活度浓度调查研究[J].中华放射医学与防护杂志,2021,41(7):504-508 |
| 内蒙古地区饮用水中总α及天然放射性核素的活度浓度调查研究 |
| Study on the activity concentration of total α and natural radionuclides in drinking water in Inner Mongolia region |
| 投稿时间：2021-02-24 |
| DOI：10.3760/cma.j.issn.0254-5098.2021.07.005 |
| 中文关键词: 内蒙古 饮用水 放射性指标 有效剂量 |
| 英文关键词:Inner Mongolia Drinking water Radioactivity Effective dose |
| 基金项目:国家自然科学基金项目（11865011）；内蒙古自治区自然科学基金（2019MS08073；2020MS08207） |
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| 摘要点击次数: 2014 |
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| 中文摘要: |
| 目的 了解内蒙古地区饮用水中的放射性水平，研究分析内蒙古个别地区饮用水中总α放射性水平较高的原因。方法 根据已筛查结果再次采集内蒙古地区部分城镇总α放射性水平较高的水样，用低本底α、β放射性测量仪测量、微量铀分析仪和电感耦合等离子体质谱仪分析其放射性指标异常的原因，估算居民饮水摄入放射性所致待积有效剂量。结果 自来水样品总α放射性活度0.508~1.00 8 Bq/L，出厂水总α放射性活度0.507~1.965 Bq/L。激光荧光法测量自来水铀浓度范围为3.41~35.71 μg/L，出厂水铀浓度范围为3.62~32.61 μg/L。电感耦合等离子体质谱仪法测量自来水中的238U浓度范围5.83~34.36 μg/L、232Th浓度范围0.002~0.359 μg/L；出厂水中的238U浓度范围5.62~29.41 μg/L、232Th浓度范围0.003~0.327 μg/L。结论 通过对内蒙古部分地区饮用水样的复测分析研究发现，水样中总α放射性水平较高的原因源于铀，铀含量的偏高导致总α值偏高。 |
| 英文摘要: |
| Objective To ascertain the level of radioactivity in drinking water in Inner Mongolia region, and analyze the reasons why the total alpha radioactivity index is high in drinking water in some areas thereof. Methods Water samples with high total alpha radioactivity index were collected in some towns in the region on the basis of surveyed result, with the causes of abnormal radioactivity index being analyzed, using low background α radioactivity measuring instrument, microuranium analyzer, and inductively coupled plasma mass spectrometer, to estimate the accumulative effective dose caused by ingestion of radioactivity in drinking water. Results The total alpha activity was 0.508-1.008 Bq/L in tap water samples and 0.507-1.965 Bq/L in finished water samples. Uranium concentration was 3.41-35.71 μg/L in tap water measured using laser fluorescence method and 3.62-32.61 μg/L in finished water measured using laser fluorescence method, respectively. The concentration of 238U and 232Th in tap water measured by inductively coupled plasma mass spectrometry was 5.83-34.36 μg/L, 0.002-0.359 μg/L, respectively, while that in finished water was 5.62-29.41 μg/L, 0.003-0.327 μg/L, respectively. Conclusions Based on the repeated measurement analysis of drinking water samples from some areas in Inner Mongolia, the high level of total α radioactivity in water samples is caused by uranium, and the high content of uranium leads to a high total alpha value. |
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