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95Zr在土壤中的淋溶和迁移分布

Keywords: 95Zr,淋溶,迁移与分布,放射生态学

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Abstract:

采用模拟土柱法研究了95Zr在2种淹水土壤(小粉土、红黄壤)中的淋溶和垂直迁移。结果表明:(1)淋溶后收集到的全部淋溶液中95Zr的含量较少,小粉土淋溶液中95Zr为总活度的3.05%,黄红壤淋溶液中95Zr为总活度的3.00%;(2)滞留于土壤中的95Zr绝大部分分布在土壤表层0~1.0cm范围内,小粉土中有67.80%~80.18%的95Zr滞留于0~1.0cm土层范围内,黄红壤中有74.05%~86.95%的95Zr滞留于0~1.0cm土层范围内;(3)土壤中95Zr比活度与距土壤表层深度分布呈单项指数规律。

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