巯基棉分离富集-石墨炉原子吸收法测定痕量铟的研究  

Separation and Enrichment of Trace Indium with Sulfhydryl Cotton and Determination by Graphite Furnace Atomic Absorption Spectrometry

作　　者：欧阳开[1] 龚琦[1] 

机构地区：[1]广西大学化学化工学院,南宁530004

出　　处：《分析科学学报》2007年第2期243-245,共3页Journal of Analytical Science

基　　金：广西壮族自治区教育厅科技项目(桂教科研[2003]22号)

摘　　要：研究了巯基棉（SCF）富集痕量In（Ⅲ）的条件，并用石墨炉原子吸收光谱（GFAAS）法测定痕量In（Ⅲ）。结果表明，在pH=4．0时，巯基棉能定量富集痕量In（Ⅲ），其饱和吸附量为181μg／g。吸附的In（Ⅲ）可被0．8mol／L的HNO3定量洗脱。本法用于人工合成铝基、锌基样品和锌精矿中痕量In（Ⅲ）的富集和测定，回收率为92．8%～100．6％。The factors for enrichment of trace indium were investigated, and the enriched indium was determined by graphite furnace atomic absorption spectrometry （GFAAS）. The results showed that sulfhydryl cotton could enrich In（Ⅲ） quantitatively at pH=4.0 and the saturated capacity was 181 μg/g. The loaded In（Ⅲ） was eluted quantitatively by 0.8 mol/L HNO3. The method has been applied to enrichment and determination of trace In（Ⅲ） in artificial aluminium samples, artificial zinc samples and sample of zinc concentrate. The recovery was in the range of 92.8%-100.6%.

关 键 词：铟 巯基棉 富集 GFAAS 

分 类 号：O657.31[理学—分析化学]