...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>World Journal of Nuclear Science and Technology >Characterization of 137Cs in Riyadh Saudi Arabia Soil Samples
【24h】

Characterization of 137Cs in Riyadh Saudi Arabia Soil Samples

机译：利雅得沙特阿拉伯土壤样品中137Cs的表征

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The current study was conducted primarily to investigate and estimate 137Cs activity concentrations and the external dose rate due to fallout radionuclide 137Cs. Soil samples were collected from different 25 locations at Riyadh Province and analyzed using low level γ-spectrometry equipped with HPGe-detector. 137Cs activity concentrations and calculated dose rate were found in the range of 0.8 - 3.1 Bq·kg–1 and 0.05 to 0.8 nSv·h–1 with an average value of 1.70 ± 0.7 Bq·kg–1 and 0.11 ± 0.05 nSv·h–1 respectively. The measured 137Cs activity concentration range was compared with the reported ranges in the literature from some of the other locations in the world. Results obtained in this study show that 137Cs concentration is of a lower level in the investigated area. However, the range of 137Cs concentrations observed in this study is significantly high relative to similar data reported from Libya. The average value of estimated external effective dose rate is found far below the dose rate limit of of 1.0 mSv·y–1 for members of the general public recom-mended by ICRP as well as the external gamma radiation dose of 0.48 mSv·y–1 received per head from the natural sources of radiation assessed by (UNSCEAR, 2000). It is concluded that 137Cs soil contamination does not pose radia-tion hazards to the population in the investigated areas.
机译：目前进行的研究主要是调查和估计137 Cs的活性浓度以及由于放射性核素137 Cs引起的外部剂量率。从利雅得省的25个不同地点收集土壤样品，并使用配备HPGe检测器的低含量γ光谱仪进行分析。发现137 Cs的活性浓度和计算的剂量率在0.8-3.1 Bq·kg-1和0.05至0.8 nSv·h-1之间，平均值为1.70±0.7 Bq·kg-1和0.11±0.05 nSv·h分别为–1。将测得的137Cs活性浓度范围与世界上其他一些地方的文献报道范围进行了比较。这项研究获得的结果表明，在研究区域中137 Cs的浓度较低。但是，相对于利比亚报道的类似数据，本研究中观察到的137Cs浓度范围明显较高。估计的外部有效剂量率的平均值远远低于ICRP建议的普通民众的剂量率上限1.0 mSv·y–1以及外部伽玛射线剂量0.48 mSv·y–1每人平均收到1份来自经评估的自然辐射源（UNSCEAR，2000年）。结论是：137 Cs的土壤污染不会对调查区域的居民造成辐射危害。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号