极谱法快速测定锌烟尘中的微量铟

金属矿山 ›› 2009, Vol. 39 ›› Issue (06): 102-103.

极谱法快速测定锌烟尘中的微量铟

梁信源，黎铉海，蔡卓，刘朝乾，文辉忠

广西大学

出版日期:2009-06-08 发布日期:2011-07-21
基金资助:
广西自然科学基金项目（编号：桂科自0728238）。

Rapid Polarographic Determination of Micro Indium in Zinc Flue Dust

Liang Xinyuan，Li Xuanhai，Cai Zhuo，Liu Chaoqian，Wen Huizhong

Guangxi University

Online:2009-06-08 Published:2011-07-21

摘要/Abstract

摘要： 将锌烟尘样品用盐酸-硝酸-氢氟酸消解后，在盐酸-盐酸羟胺支持电解质溶液中用单扫描极谱法直接测定其铟含量。探讨了试剂用量的影响和一些共存离子的干扰情况，确定了适宜的试验条件。试验表明，铟络合物于-0.63 V（相对于饱和甘汞电极）处产生一灵敏的极谱波，其峰电流与铟浓度（0.01~5 g/mL）有良好的线性关系，检出限为0.003 g/mL。本法简便快速、灵敏准确，用于测定锌冶炼烟尘中的微量铟，测定结果与ICP-AES法的测定结果相符，相对标准偏差为0.5%~2.7%，加标回收率为98%～104%。

关键词: 锌烟尘, 铟含量测定, 单扫描极谱法

Abstract: The zinc flue dust sample was digested by HCl-HNO₃-HF and the indium content was directly measured by a single-sweep polarography in the supporting electrolyte solution of HCl-HONH₃Cl. The effect of reagent dosage and some interference ions were studied，and the suitable conditions were selected. The experimental results show that a sensitive polargraphic wave of indium complex is produced at -0.63 V (vs. SCE), whose peak current has a good linear relationship with indium concentration in the rang of 0.01~5 g/mL，with the detection limit being 0.003 g/mL. This method is simple，rapid，sensitive and accurate. When it was used for direct determination of micro-amount indium in flue dust of zinc smelting samples，the RSD was 0.5%~2.7 % and the recovery was in the range of 98%~104%，with the results agreeing with those obtained by ICP-AES.

Key words: Zinc flue dust, Indium determination, Single-sweep polarography

梁信源, 黎铉海, 蔡卓, 刘朝乾, 文辉忠. 极谱法快速测定锌烟尘中的微量铟[J]. 金属矿山, 2009, 39(06): 102-103.

LIANG Xin-Yuan, LI Xuan-Hai, CAI Zhuo, LIU Chao-Qian, WEN Hui-Zhong. Rapid Polarographic Determination of Micro Indium in Zinc Flue Dust[J]. Metal Mine, 2009, 39(06): 102-103.

扫码分享