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

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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
- Issue 4, Pages: 12-15(2007)
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- Published：2007
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Study on Release of Rare Earth Elements from Red Soils under Influence by Simulated Acid Rain[J]. 2007, (4): 12-15.
DOI：

Study on Release of Rare Earth Elements from Red Soils under Influence by Simulated Acid Rain[J]. 2007, (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 Author

LIU Guang-shen

SHI Hong-wen

ZHANG Hua

XU Zhong-jian

ShI Yan-Xi

CAI Jin-Juan

LIU Su-chun

WANG Zhi-kun

Related Institution

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

Institute of Geography，Fujian Normal University

Institute of Geography, Fujian Normal University

Key Laboratory of Humid Sub-tropical Eco-geographical Process of Ministry of Education, Fujian Normal University

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