| 郭义曹,黄嘉麟,刘小莲.广东省天然矿泉水放射性核素浓度及其所致居民剂量[J].中华放射医学与防护杂志,2000,20(2):132-135 |
| 广东省天然矿泉水放射性核素浓度及其所致居民剂量 |
| Natural radionuclides in mineral water and their internal dose to residents of Guangdong Province |
| 投稿时间：1999-02-10 |
| DOI： |
| 中文关键词: 矿泉水 放射性 剂量 |
| 英文关键词:Mineral water Radioactivity Dose |
| 基金项目: |
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| 中文摘要: |
| 目的 探讨广东省饮用天然矿泉水源水中天然放射性核素浓度及所致居民剂量。方法 采用射气法、固体荧光光度法、分光光度法、原子吸收分光光度法、闪烁室法分别测定矿泉水中天然放射性核素。结果 矿泉水源水中226Ra、天然铀、天然钍、40K、氡含量的均值分别为68.6mBq·L-1、2.14μg·L-1、0.65μg·L-1、0.199Bq·L-1、209.8Bq·L-1;饮用天然矿泉水摄入放射性核素所致待积有效剂量为0.932mSv·a-1;其中氡所致剂量为0.919mSv·a-1, 约占总待积剂量的99%.结论 矿泉水作为日常饮用水的群体所致待积剂量要比正常本底地区公众增加2～3倍的附加剂量;已接近长期持续受照剂量限值。 |
| 英文摘要: |
| Objective To research the contents of natural radionuclides in mineral water and their internal dose to residents of Guangdong Province. MethodsSpectrophotofluorometry,spectrophotometry,atomic absorption spectrophotometry and scintillation chamber method were used to determine the radionuclides in mineral water. Results The mean concentration of 226 Ra, natural uranium,natural thorium, 40 K,and radon in mineral water were 68. 6 mBq·L -1,2. 14 μg·L -1 、0. 65 μg·L -1,0. 199 Bq·L -1 and 209 8 Bq·L -1, respectively.The committed equivalent dose resulting from ingesting natural radionuclides in mineral water was estimated to be 0. 932 mSv·a -1,and the dose caused by intake of radon was 0. 919 mSv·a -1,accounting for approximately 99 per cent of the total dose. Conclusion The dose contributed by drinking mineral water is triple or quadruple that by public exposure in normal background areas, and is close to the annual dose limits of continuous and long term exposure. |
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