罗丹宁纤维富集分离－示波极谱法测定地质样品中的金  

Determination of Gold in Geological Samples by Single Sweep Oscillopolarography after Enrichment and Separation with Rhodanine Fibre

作　　者：雷丽莉 邓玉强 

机构地区：[1]核工业部西北地勘局二○三研究所

出　　处：《岩矿测试》1995年第4期281-284,共4页Rock and Mineral Analysis

摘　　要：考察了螯合罗丹宁纤维富集分离。示波极谱法测定Ａｕ的条件，选用０．１５ｇ罗丹宁纤维装柱（Φ５ｍｍ×８０ｍｍ）富集Ａｕ，吸附Ａｕ后的罗丹宁纤维于７００℃灰化的烧，浸取物在ＮａＯＨ底液中用示波极谱法测定。测定范围为０．４～１４０μｇ／ｍｌＡｕ，经对标样分析，结果与标准值相符。对Ａｕ含量为４．９３×１０￣－６级的标样进行１０次测定，方法精密度（ＲＳＤ）为１．１４％。方法选择性高、稳定性好，适用于Ａｕ含量在０。２×ｌ０￣－６以上地质样品的分析。he enrichment of gold is effected by the use of 0.15 g of rhodanine fibre,and the fibre is ashed at 700℃ The gold is determined by single sweep oscillography in a supporting electrolyte of NaOH.The detection limit is 0.06μg/ml and the method is useful for the determination of gold in the range 0.4～140μg/ml. The RSD as tested on a reference sample containing 4.93 μg/ggold is l.14%(n=10).The method shows promise in selectivity and stability,and is suitable for the determiation of more than 0.2μg/ggold in geological samples.

关 键 词：罗丹宁纤维 分离 示波极谱法 地质样品 金 

分 类 号：P575.4[天文地球—矿物学]