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首页> 外文期刊>Journal of Environmental Radioactivity >Inventories of ~(239+240)pu, ~(137)Cs, and excess ~(210)Pb in sediments from freshwater and brackish lakes in Rokkasho, Japan, adjacent to a spent nuclear fuel reprocessing plant
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Inventories of ~(239+240)pu, ~(137)Cs, and excess ~(210)Pb in sediments from freshwater and brackish lakes in Rokkasho, Japan, adjacent to a spent nuclear fuel reprocessing plant

机译：日本六所庄淡水和咸淡湖中邻近乏核燃料后处理厂的沉积物中〜（239 + 240）pu，〜（137）Cs和过量〜（210）Pb的清单

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摘要

We investigated the vertical profiles of ~(239+240)pu, ~(137)Cs, and excess ~(210)Pb (~(210)Pb_(ex)) in sediment core samples obtained from two freshwater lakes and two brackish lakes situated near the first commercial spent nuclear fuel reprocessing plant in Rokkasho, Japan, before the final test of the plant using actual spent nuclear fuel. The inventory of ~(239+240)pu in those lakes was larger than that in soil in Rokkasho, which indicated the inflow of ~(239+240)pu from the catchment area in addition to direct deposition on the lake surfaces. The ~(137)Cs inventory in sediments of the brackish lakes was lower than that in the soil, which showed that part of the ~(137)Cs was removed from the sediments by the brackish water or that it was not deposited into the sediments, because of the high solubility of Cs in brackish water. The ~(137)Cs inventory in sediments of the freshwater lakes was higher than that of the brackish lakes, and comparable with that in soil except for one core sample out of four. The ~(239+240)pu/~(137)Cs ratio in freshwater lake sediments was higher than that in soil, and that indicated that part of the ~(137)Cs was lost from the sediments. The low inventory of ~(137)Cs may be attributable to competition for absorption sites in sediments with ammonium ions formed in the reducing environment which occurs from summer to fall in the sediments. Those data will be used as background data on the artificial radionuclides in the lakes to assess the effect of released radionuclides on their concentrations.
机译：我们调查了从两个淡水湖和两个咸淡湖中获得的沉积物岩心样品中〜（239 + 240）pu，〜（137）Cs和过量〜（210）Pb（〜（210）Pb_（ex））的垂直剖面位于日本六所村第一个商业用过的核燃料后处理厂附近，在对使用实际乏核燃料的工厂进行最终测试之前。这些湖泊中〜（239 + 240）pu的存量大于六甲所土壤中的存量，这表明〜（239 + 240）pu从集水区流入，除了直接沉积在湖面上。咸淡湖沉积物中〜（137）Cs的存量低于土壤中的〜（137）Cs存量，这表明咸咸水将~~ 137Cs的一部分从沉积物中去除或未沉积到沉积物中。 ，因为Cs在微咸水中具有很高的溶解度。淡水湖沉积物中〜（137）Cs的存量高于咸淡湖，与土壤中的〜（137）Cs存量相当，除了四分之一的核心样品。淡水湖沉积物中〜（239 + 240）pu /〜（137）Cs的比率高于土壤中的〜（239 + 240）pu /〜（137）Cs，表明〜（137）Cs的一部分从沉积物中流失。 〜（137）Cs的低库存可能归因于还原性环境中形成的铵离子在沉积物中竞争吸收位点，这种情况发生于夏季到秋季。这些数据将用作湖泊中人工放射性核素的背景数据，以评估释放的放射性核素对其浓度的影响。

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  • 来源
    《Journal of Environmental Radioactivity》 |2009年第10期|835-840|共6页
  • 作者

    Shinji Ueda; Yoshihito Ohtsuka; Kunio Kondo; Shunichi Hisamatsu;

  • 作者单位

    Department of Radioecology, Institute for Environmental Sciences 1-7 Rokkasho-mura, Aomori 039-3212, Japan;

    Department of Radioecology, Institute for Environmental Sciences 1-7 Rokkasho-mura, Aomori 039-3212, Japan;

    Department of Radioecology, Institute for Environmental Sciences 1-7 Rokkasho-mura, Aomori 039-3212, Japan;

    Department of Radioecology, Institute for Environmental Sciences 1-7 Rokkasho-mura, Aomori 039-3212, Japan;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    inventory ~(239+240)Pu; ~(137)Cs; excess ~(210)Pb; lake sediment; rokkasho; Japan;

    机译：Inen to ry〜（239 + 240）pu;〜（137）Cs;E x s s〜（210）Pb;Ake精液;Rockaccho;日本;

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