稀土矿山水系中稀土的形态分布及迁移  

The Existing Species and Transformation Pattern of Rare-earth Elements in the Natural Water of Rare-earth Mine

作　　者：陈志澄[1] 庄文明[2] 洪华华 陈炳辉 

机构地区：[1]广东医学院卫生化学教研室 [2]中山大学地质系

出　　处：《广东药学院学报》1993年第1期10-13,共4页Academic Journal of Guangdong College of Pharmacy

基　　金：国家自然科学基金资助项目

摘　　要：本文研究了稀土矿山水系中稀土的形态及分布。原水中的稀土主要是水溶态。胶体和悬浮物中稀土存在离子交换态,碳酸盐化合态、铁铝共沉淀态和有机结合态,其中以碳酸盐化合态为主,铁铝共沉淀态为次。底泥中也存在上述四种化学形态,但以铁铝共沉淀态为主,碳酸盐结合态为次,有机结合态一般较少。离子交换态在底泥中分布较平稳,在胶体和悬浮物中变幅较大。稀土的迁移和沉降受pH控制,并受排入水体物质和粘土矿物量影响。This paper has discussed the existing species and transformation of rare earth elements in the natural water of rare earth mine. The rare earth elements occur mainly in water—soluble species in the original water. Their chemical species are divided into four types,the species of ion exchange,the species of co—precipitation with hydrated oxides of Fe,Al,the species of chemical combination with carbonate,the species of combination with organic matter, in colloid and suspended species. Among the four chemical species,the third one takes first place ,the second one comes second. The above mentioned four species also exist in sediment, but the second one takes the first, the third one comes second. The distribution of the ion —exchange species is stable in sediment,while varies widely in colloid and suspended species. Generally, the species of combination with organic matter is less. Rare earths's transformation and displacement are controlled by pH and content of clay mineral. A transformation pattern is established in this paper.

关 键 词：稀土 形态 水环境 稀土矿山 迁移 

分 类 号：R9[医药卫生—药学]