| 模拟酸雨下土壤中稀土元素的环境化学行为和植物可利用性研究 |
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| 引用本文： | 陈照喜,王晓蓉,田笠卿,戴乐美.模拟酸雨下土壤中稀土元素的环境化学行为和植物可利用性研究[J].环境科学学报,1995,15(1):32-38. |
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| 作者姓名： | 陈照喜 王晓蓉 田笠卿 戴乐美 |
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| 作者单位： | 华东冶金学院化工系，南京大学环科系 |
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| 摘 要： | 研究了模拟酸雨对两种土壤中稀土元素的环境化学行为和植物可利用性的影响．结果表明，酸雨的酸度及淋洗量皆对稀土元素的淋溶产生影响，酸雨淋洗使土壤中稀土元素的形态含量发生了改变．由回归分析得知，有效态稀土的主要存在形态是交换态和松结有机态，实验表明，稀土的植物可利用性随模拟酸雨淋洗液的酸度增大而减小．
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| 关 键 词： | 酸雨 稀土元素 环境化学行为 植物可利用性． |
| 收稿时间： | 1993/10/21 0:00:00 |
SIMULATION STUDY ON THE EFFECTS OF ACID PRE-CIPITON ON THE ENVIRONMENTAL CHEMICAL BEHAVIOR AND PLANT UTILITY OF RARE EARTH ELEMENTS |
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| Chen ZhaoXi,Wang Xiaorong,Tian Liqing and Dai Lemei.SIMULATION STUDY ON THE EFFECTS OF ACID PRE-CIPITON ON THE ENVIRONMENTAL CHEMICAL BEHAVIOR AND PLANT UTILITY OF RARE EARTH ELEMENTS[J].Acta Scientiae Circumstantiae,1995,15(1):32-38. |
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| Authors: | Chen ZhaoXi Wang Xiaorong Tian Liqing and Dai Lemei |
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| Affiliation: | Department of Chemical Engineering, East China Institute of Metallurgy, Maanshan 243002,Department of Environmental Science, Nanjing University,Department of Environmental Science, Nanjing University and Department of Environmental Science, Nanjing University |
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| Abstract: | The effects of simulated acid precpitation on the environmental chemical behavior andplant utility of rare earth elements(REEs)are studied.The results show that the acidityand volume of acid precipitation affect apparently on the process of the leaching of REEs;the acid precipitation changes the amounts of various forms of REEs.Optimum regressionanalysis predicts that the main source of available REEs is exchangeable REEs and REEsweakly bound to organic matter.This study also finds that the amounts of REEs in plantsdecrease with increase of acidity in simulated acid precipitation. |
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| Keywords: | acid precipitation rare earth elements environmental chemical behavior plant utility |
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