花岗岩风化壳稀土存在形态分析方法研究  

A Study on Determination of Rare Earth Species in Weathering Crust of Granites

作　　者：陈志澄[1] 洪华华[2] 庄文明[2] 俞受鋆[2] 

机构地区：[1]广东医药学院预防医学系,广州510224 [2]中山大学地质系,广州510275

出　　处：《分析测试学报》1993年第4期21-25,共5页Journal of Instrumental Analysis

基　　金：国家自然科学基金

摘　　要：研究了一个测定花岗岩风化壳中REE存在形态的方法。以0.2 mol/L MgCl_2,2.5 mol/LHCl,0.5 mol/L NaOH及含15%H_2O_2的2.5 mol/L HCl连续提取风化壳试样中的稀土。经X射线衍射、红外光谱及剖面试样测试,论证了每一提取态的内涵,提出了花岗岩风化壳中非原生矿物相稀土存在活性态、铁铝共沉淀态和有机结合态的新认识。The determination of REE speciation in weathering crust of granites was researched. TheREE in weathering crust was successively isolated by 0.2mol/L MgCl_2, 2.5mol/L HCl, 0.5mol/L NaOH and 2.5mol/L HCl including 15 percent H_2O_2. The connotation of every specieswas analyzed by means of X-ray diffraction, infrared absorption spectrum and measurementof weathering crust samples. New knowledge that REE exists as active, iron aluminiumcoprecipitation and combination with organic compounds was put forward.

关 键 词：稀土 形态 花岗岩风化壳 

分 类 号：P619.222[天文地球—矿床学]