大洋多金属结核中稀土元素的测定及其地球化学特征  

Determination and Geochemical Characteristic Study of Rare Earth Elements in Deep Sea Polymetallic Nodules

作　　者：周世光 林学辉 任思鸿 

机构地区：[1]地矿部海洋地质研究所

出　　处：《岩矿测试》1997年第1期28-32,共5页Rock and Mineral Analysis

基　　金：中国大洋矿产资源研究与开发协会八五综合研究课题

摘　　要：大洋多金属结核经碱熔分解，氢氧化物沉淀和阳离子交换树脂富集稀土元素后，主元素（也是富线光谱元素）Ｍｎ和Ｆｅ的残留量（ｗＢ）仅０１％左右，不干扰ＩＣＰ＿ＡＥＳ法测定稀土元素。方法的检出限为１μｇ／Ｌ（Ｌｕ）～７５μｇ／Ｌ（Ｎｄ），ＲＳＤ（ｎ＝１１）小于５％。采用此法测定了国家一级多金属结核标准物质中１５个稀土元素，结果与标准值相符；同时为东太平洋多金属结核待定值标准物质提供了１５个稀土元素数据；A method for the determination of rare earth elements(REEs) in deep sea polymetallic nodules is reported in this paper. REEs are preconcentrated by ion exchange chromatography and major components of Mn and Fe are separated. The interferences from major components on REEs determination by ICP_AES are eliminated. The detection limits for REEs are from 1 μg/L(Lu) to 75 μg/L(Nd) with precision of less than 5% RSD( n =11). The method has been applied to the determination of 15 REEs in national standard reference polymetallic nodules with satisfactory results. The data of REEs provided by this method in polymetallic nodules from east Pacific Ocean has also been used in geochemical characteristic study.

关 键 词：多金属结核 原子发射光谱 地球化学 大洋 稀土族 

分 类 号：P736.43[天文地球—海洋地质] P744[天文地球—海洋科学]