聚合膜电解浓集法测量低水平氚环境水样的氚比活度
Application of the Solid Polymer Electrolysis Enrichment Method for Low Level Tritium in Environmental Water and the Calculation of Tritium Specific Activity
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摘要: 随着氚同位素电解浓集技术和测量仪器的发展,对低水平的氚比活度可以进行准确测量,但由于现行的氚处理方法的差异,导致氚比活度测定的不确定性增加。本文采用现行的两种氚比活度测量方法碱式电解浓集法和聚合膜电解浓集法测量低水平环境水样的氚比活度,并将结果进行比对。针对聚合膜电解法,通过使用优化结构的装置提高可靠性;对于使用国家标准方法计算出现较大误差的情况下,在氚水回收率的计算数据处理方面提出了死体积的概念,改善了聚合膜电解法测量低水平氚样品的稳定性,使氚比活度的计算结果更加精确。Abstract: By using the solid polymer electrolysis (SPE) enrichment method and measuring instrument, it is possible to obtain accurate measurements of tritium specific activity for low level tritium sample. However, the differences between current treatment methods for tritium increase uncertainty of the tritium concentrations. In this paper, the methods of SPE electrolysis and alkali electrolysis enrichment (ASE) are used to compare the research results of tritium specific activity for low level environmental water. The reliability of the SPE electrolysis method was improved by using structure optimized apparatus. In order to avoid large uncertainties calculated by the national standard method, the conception of dead volume was introduced into the data processing of the recovery rate for tritium, which improved the stability of the SPE electrolysis method and accuracy of the calculation result.
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Campana M E, Mahin D A. Model-derived estimates of groundwater mean ages, recharge rates, effective porosities and storage in a limestone aquifer[J].Journal of Hydrology, 1985,76:247-264. Campana M E, Mahin D A. Model-derived estimates of groundwater mean ages, recharge rates, effective porosities and storage in a limestone aquifer[J].Journal of Hydrology, 1985,76:247-264.
王绍令,李作福,刘景寿,梁志祥.青藏高原东部地表水、地下水的氖同位素研究[J].环境科学,1990,11(1):23-27. 王凤生,李桂芬.应用同位素氚计算降水入渗系数的探讨[J].地下水,1990,7(2):70-72. 张之淦,刘芳珍,张洪平,刘恩凯.应用环境氚研究黄土包气带水分运移及入渗补给量[J].水文地质工程地质,1990,34(3):5-7. 庞忠和,樊志成,汪集旸.漳州盆地水热系统氚同位素研究[J].地质科学,1990,33(4):385-393. 王东升,刘恩凯,张洪平.应用环境氚和碳-14估算娘子关泉岩溶地下水年龄和汇水面积[J].水文地质工程地质,1991,18(2):2-6. 杨郧城,侯光才,马思锦.鄂尔多斯盆地地下水中氚的演化及其年龄[J].西北地质,2004,37(1):97-100. Fourré E, Jean-Baptiste P, Arnaud D. Past and recent tritium levels in Arctic and Antarctic polar caps[J].Earth and Planetary Science Letters,2006,245:56-64. Fourré E, Jean-Baptiste P, Arnaud D. Past and recent tritium levels in Arctic and Antarctic polar caps[J].Earth and Planetary Science Letters,2006,245:56-64.
陈宗宇,陈京生,费宇红,张兆吉,张翠云.利用氚估算太行山前地下水更新速率[J].核技术,2006,29(6):426-431. 罗云菊,刘东燕,许模.重庆地下热水径流特征研究[J].地球与环境,2006,34(1):49-54. 田华,王文科,曹玉清,王钊,王杰.关中盆地地下水氚年龄的计算[J].西安科技大学学报,2007,27(3):382-385 ,426.
陈杰,齐亚东.对应用氚水法测定林木蒸腾量的评价[J].东北林业大学学报,1990,18(3):105-113. 王树禹,安一禄,王成芝,刘大森,张鹏,尹军.利用氚水研究干湿粮混合干燥各阶段水分传递[J].中国核科技报告,1991,7(0):1-12. 杨子文,张永红,郭桂芝,白国栋.酒泉地区环境水中的氚含量及其所致剂量估算[J].环境与健康杂志,1992,9(6):279-280. 梁梅燕,马永福,倪士英,王蕾,范雪瑾.秦山核电基地外围环境氚水平分析[J].辐射防护,2009,29(4):255-260. 周美英,王国平.氚离子束标记蛋白质水解产物的氨基酸分析[J].核技术,1992,15(2):117-121. 吕慧敏,武田洋.氚化赖氨酸一次灌胃后氚在大鼠体内的滞留与代谢[J].卫生毒理学杂志,1993,7(3):149-208. 卫克勤.我国天然水中氚含量的分布特征[J].科学通报,1980,25(10):467. 卫克勤,林瑞芬,王志祥.北京地区降水中的氘、氧-18、氚含量[J].中国科学:B辑,1982,12(8):754-757. 林瑞芬,卫克勤,王洪波.天然水中氚的测定方法[J].地球化学,1979,8(4):347-352. 张向阳.电解浓缩-液闪仪计数法分析天然水中氚含量的影响因素[J].岩矿测试,2005,24(2):109-111. 张向阳,刘福亮,张琳,郭华良.液闪法测量水中氚放射性活度的淬灭效应[J].岩矿测试,2010,29(4):469-471. 焦文强,李桂英.天然水中放射性氚含量的测定——内标准法效率校正初探[J].核电子学与探测技术,1992,12(4):244-249. 董志武,周元全.杂质离子对固体聚合物电解质水电解槽性能的影响[J].化工学报,2005,56(5):900-903. 温雪莲,杨海兰,吴斌,杨怀元.SPE固体电解质氚水浓集装置及其应用[J].核电子学与探测技术,2003,23(6):583-586.
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