等离子体发射光谱法分析毒砂单矿物  

Analysis of Arsenopyrite by Inductively Coupled Plasma-Atomic Emission Spectrum

作　　者：曾惠芳 

机构地区：[1]地矿部岩矿测试技术研究所,北京100037

出　　处：《岩矿测试》1992年第3期211-216,共6页Rock and Mineral Analysis

摘　　要：研究了大孔膦酸树脂对毒砂中主、次和痕量元素的吸附行为及洗脱条件,结合巯基棉和TBP柱分离技术,建立了两个分离流程。在J-A1160型多道直读光谱仪上实现了毒砂单矿物中包括主量元素Fe和As在内的20个元素测定。主量元素As和Fe的相对标准偏差(n为5～10)分别为1.03％和0.9％,其它元素在5％～11％范围。流程经实际试样分析验证,结果与化学法相符。In this paper, two schemes were established for the analysis of arsenopy-rite by ICP-AES.In the first scheme, macroporous phosphoric acid resin was used for the separation of large amounts of iron from the arsenopyrite sample solution. The sorption and desorption of Fe and 12 other metallic elements in HC1 solution were investigated. The optimum condition using 3% ascorbic acid-3 mol/L HCI as eluting agent was presented for the elution of the adsorbed Fe(III).In the second scheme, some trace elements, such as In, T1, Cd and Au were separated from Fe and As using TBP levextrel resin. The method proposed can be used to determine 20 elements in arsenopyrite mineral. The relative standard deviations of As and Fe (w=5-10) are 1.03% and 0.9% respectively, of other elements are in the range of 5%-10%.

关 键 词：毒砂 矿物 等离子体 发射光谱分析 

分 类 号：P575.4[天文地球—矿物学]