衡阳特定水域中~(226)Ra、~(210)Pb和~(210)Po比活度及平衡性测定

详细信息    查看全文 | 推荐本文 |

英文篇名：The Specific Activity and Balance's Measuring of ~(226)Ra,~(210)Pb and ~(210)Po in Hengyang Specific Water Environment 作者：刘攀 ; 单健 ; 肖德涛 ; 肖峰 ; 王环宇 ; 苏家豪 ; 杨桧 英文作者：LIU Pan;SHAN Jian;XIAO De-tao;XIAO Feng;WANG Huan-yu;SHU Jia-hao;YANG Hui;Institute of Nuclear Science and Technology,University of South China; 关键词：衡阳 ; 226Ra ; 210Pb ; 210Po ; 比活度 英文关键词：Hengyang section;;226Ra;;210Pb;;210Po;;the radioactivity ratios 中文刊名：HERE 英文刊名：Nuclear Electronics & Detection Technology 机构：南华大学核科学技术学院; 出版日期：2018-01-20 出版单位：核电子学与探测技术 年：2018 期：v.38;No.266 基金：国家自然科学基金(11375083)资助 语种：中文; 页：HERE201801009 页数：7 CN：01 ISSN：11-2016/TL 分类号：46-51+62

摘要

对湘江衡阳段四条主要支流及湘江上游一退役铜矿水环境中~(226)Ra、~(210)Pb、~(210)Po进行了研究分析。结果表明,样品对应的衡阳地区湘江四大支流~(226)Ra、~(210)Pb、~(210)Po比活度范围分别为4.8~43.3 m Bq/L、9.6~26.5 m Bq/L和1~5 m Bq/L,其中舂陵水、蒸水样点值偏高,丰水期测量值普遍高于枯水期;退役铜矿区域水环境中~(226)Ra、~(210)Pb和~(210)Po比活度范围分别为3~68.5 m Bq/L、17~33.6 m Bq/L、2.3~8.8 m Bq/L,尾矿渗出水经小溪和小河稀释后,与湘江值相当。所测水域中,总体~(210)Pb相对~(226)Ra呈现出过剩现象;~(210)Po/~(210)Pb比值范围为0.098~0.283,与雨水中比值相符。
        The results show that the corresponding sample 's concentration respectively are 4. 8 ~43. 3 m Bq/L、9. 6 ~ 26. 5 m Bq/L and 1 ~ 5 m Bq/L in the four major tributaries on Hengyang section of Xiang river. The level of Chongling River and Zheng River are relatively higher,and the values in wet season are generally higher than dry season. The radioactivity ratio ranges in the retired copper mine area are 3 ~ 68. 5 m Bq/L,17 ~ 33. 6 m Bq/L and 2. 3 ~ 8. 8 m Bq/L. The levels in the tailing effusion drainage exit could be the same as the value of Xiang River after brooks flew over. The value of~(210)Pb is more excessive than~(226)Ra,while the ratio ranges of~(210)Po/~(210)Pb are 0. 098 ~ 0. 283,which shows that~(210)Po is less than~(210)Pb and the ratio is equal to the rainwater.

引文

[1]Yud P.Polonium-210 in the environment and in the human organism[J].Atomic Energy Review,1974,12(1):75-76.
    [2]张静,李鹏翔,李周,等.大气气溶胶中210Pb和210Po活度浓度及来源[J].辐射防护通讯,2015,35(6):17-22.
    [3]陈秀云,翁德通,杨孝桐.福建食品和水中210Pb与210Po放射性含量及其所致居民内照射剂量估算[J].中国辐射卫生,1996,5(4):214-215.
    [4]刘晓翔.大气颗粒物污染及其中210Pb浓度-粒径分析[D].南华大学,2016.
    [5]覃连敬,李美丽,覃浩.环境水中210Pb、210Po快速联测方法及应用[J].环境化学,2016,35(5):948-955.
    [6]Nozaki Y,Dobashi F,Kato Y,et al.Distribution of Ra isotopes and the210Pb and210Po balance in surface seawaters of the mid Northern Hemisphere[J].Deep Sea Research Part I Oceanographic Research Papers,1998,45(8):1263-1284.
    [7]Nozaki Y,Ikuta N,Yashima M.Unusually large210Po deficiencies relative to210Pb in the Kuroshio Current of the East China and Philippine seas[J].Journal of Geophysical Research Atmospheres,1990,95(C4):5321-5329.
    [8]王莉莉,张晔,陆月萍,等.水中210Po的分析[J].辐射防护通讯,2013,33(1):8-11.
    [9]朱昌寿,刘玉兰,徐宁,等.中国食品和水中天然放射性核素水平及其对居民所致内照射剂量[M].北京:原子能出版社,1991.
    [10]潘自强.内陆核电厂及核能发展中的几个重要安全、环境问题研究[M].北京:中国原子能出版社,2015.
    [11]赵峰.长江口及黄海海域中210Po和210Pb的环境分布及其活性不平衡现象[D].上海:华东师范大学,2010.
    [12]Heyraud M,Cherry R D.Correlation of210Po and210Pb enrichments in the sea-surface micro-layer with neuston biomass[J].Continental Shelf Research,1983,1(3):283-293.
    [13]杨伟锋,黄奕普,陈敏,等.南沙海域表层水中210Po/210Pb不平衡及其海洋学意义[J].中国科学,2006,36(1):81-89.
    [14]Flynn W W.The determination of low levels of polonium-210 in environmental materials[J].Analytica Chimica Acta,1968,43(2):221-222.
    [15]Kim G.Large deficiency of polonium in the oligotrophic ocean’s interior[J].Earth&Planetary Science Letters,2001,192(1):15-21.