Study on Release of Rare Earth Elements from Red Soils under Influence by Simulated Acid Rain

XU Zhong-jian; ZHANG Hua; SHI Hong-wen; LIU Guang-shen

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Study on Release of Rare Earth Elements from Red Soils under Influence by Simulated Acid Rain

更新时间：2024-11-07

- Study on Release of Rare Earth Elements from Red Soils under Influence by Simulated Acid Rain
- Vol. 21, Issue 4, Pages: 12-15(2007)
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  CLC： X5
- Published：2007
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XU Zhong-jian, ZHANG Hua, SHI Hong-wen, et al. Study on Release of Rare Earth Elements from Red Soils under Influence by Simulated Acid Rain[J]. 2007, 21(4): 12-15.
DOI：

XU Zhong-jian, ZHANG Hua, SHI Hong-wen, et al. Study on Release of Rare Earth Elements from Red Soils under Influence by Simulated Acid Rain[J]. 2007, 21(4): 12-15. DOI：

摘要

模拟酸雨作用下红壤中稀土元素的释放水平大小依次为Pr＞Ce＞Nd＞Tb＞Sm＞La＞Er＞Ho＞Gd＞Dy＞Eu＞Y＞Lu≈Yb

轻稀土元素的释放水平要高于重稀土元素.酸雨对稀土元素的释放有明显的促进作用

且不同元素的CAR1/CCK、CR2/CCK比较接近(CAR1、CAR2和CCK分别表示pH4.5的酸雨、pH3.5的酸雨和对照3种情况下淋出液中稀土元素的含量).CAR1/CCK介于1.43～1.93之间

平均为1.61;CAR2/CCK介于1.76～2.27之间

平均为2.06

经过9 150～10 650 mm的模拟酸雨淋溶以后

pH4.5的酸雨使稀土总累积释放量平均提高37.61%

pH3.5的酸雨使稀土总累积释放量平均提高78.05%.稀土总释放量与Fe、Mn的释放量相关分析表明:多数红壤稀土总释放量与Fe、Mn的释放量呈显著或极显著性相关.初步推断红壤中的稀土释放可能是由于吸附载体Fe-Mn氧化物因H 的输入而解离所致.

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Study on Release of Rare Earth Elements from Red Soils under Influence by Simulated Acid Rain

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Related Institution

State Key Laboratory of Subtropical Mountain Ecology Funded by Ministry of Science and Technology and Fujian Province

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