| 锆石的结构与化学稳定性 :核废料处置矿物类比物研究 |
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| 引用本文： | 卢海萍,王汝成,陆现彩.锆石的结构与化学稳定性 :核废料处置矿物类比物研究[J].地学前缘,2003,10(2):403-410. |
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| 作者姓名： | 卢海萍 王汝成 陆现彩 |
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| 作者单位： | 南京大学,地球科学系,成矿作用重点实验室,表生地球化学研究所,南京,210093 |
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| 基金项目： | 国家自然科学基金，40025209， |
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| 摘 要： | 锆石可作为核废料处置矿物类比物的重要矿物 ,近年来对此开展了大量的研究。在综合前人研究成果的基础上 ,文中对天然锆石遭受放射性照射所导致的晶格破坏、蜕晶质化以及锆石在各种热液条件下的稳定性、表面反应特性等几个方面进行了总结研究 ,特别是对各种热液条件下锆石的溶解动力学及元素传质进行全面讨论 ,进一步阐明了锆石作为核废料处置矿物类比物的优越性 ,指出今后一方面应着重对锆石的放射性破坏机制及蜕晶质化过程中的元素扩散、迁移和聚集进行系统的研究 ,另一方面着重研究不同变质程度锆石的淋滤机制和不同条件下淋滤溶液 (不同 pH值、无机溶液组分、有机溶液等 )对锆石中各种元素的影响。
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| 关 键 词： | 核废料处置 锆石 模拟试验 |
| 文章编号： | 1005-2321(2003)02-0403-08 |
| 修稿时间： | 2002年4月13日 |
THE STUCTURAL AND CHEMICAL STABILITY OF ZIRCON: THE STUDY OF NUCLEAR-WASTE DISPOSAL ANALOGOUS MINERAL |
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| LU Hai\|ping,WANG Ru\|cheng,LU Xian\|cai.THE STUCTURAL AND CHEMICAL STABILITY OF ZIRCON: THE STUDY OF NUCLEAR-WASTE DISPOSAL ANALOGOUS MINERAL[J].Earth Science Frontiers,2003,10(2):403-410. |
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| Authors: | LU Hai\|ping WANG Ru\|cheng LU Xian\|cai |
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| Abstract: | Zircon as one of the most important nuclear\|waste disposal analogy minerals has been well studied. The study of the metamictization of zircon resulted from natural radiation damage and the stability of zircon in various hydrothermal conditions has been reviewed in this paper. Especially, the mobilization of elements in zircon under various hydrothermal conditions has been discussed in detail.The advantage of zircon as a nuclear\|waste disposal analogy mineral was also illustrated. We propose that the emphases of further study would focus on the mechanism of the radiation damage of the crystal zircon and the diffusion, transference and concentration of elements in metamict zircon after radiation damage,and on the leaching mechanism of zircon with different metamict degree as well. We suggest that the influence of leaching solution composition (pH and components of hydrothermal fluid) on the element mobilization in zircon should be studied deeply. |
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| Keywords: | nuclear\|waste disposal zircon hydrothermal experiment |
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