电感耦合等离子体发射光谱法测定锌精矿中的铟

应用电感耦合等离子体发射光谱法测定锌精矿中的铟,确定了最佳工作条件,选择了最佳分析谱线,并利用标准加入法和基体匹配法验证了方法的准确性。样品用氟化氢铵、盐酸、硝酸、高氯酸溶样,用盐酸定容。结果表明,电感耦合等离子体发射光谱法与萃取分离盐酸羟胺示波极谱法测定的铟含量结果一致。方法准确,快速,加标回收率为99.6%～101.7%,相对标准偏差为0.97%～2.1%。

Determination of Indium in Zinc Concentrate by Inductively Coupled Plasma Atomic Emission Spectrometry

A method for determining indium in zinc concentrate by inductively coupled plasma emission spectrometry (ICP-AES) is reported. Optimal conditions were determined and best spectral lines were selectcted. The accuracy of the ICP-AES method was tested using the standard addition method and the matrix matching method. The sample was digested in ammonium hydrogen fluoride, hydrochloric acid, nitric acid and perchloric acid. Then the salts were leached by hydrochloric acid. The results indicated that the method was applicable for the determination of indium in zinc concentrate, and the indium contents determined by the ICP-AES method were in good agreement with those determined by the oxammonium hydrochloride medium oscillopolarographic method. The method is precise and rapid. The recovery of standard addition and precision tests were made, with the recoveries of 99.6%~101.7% and the relative standard deviations of 0.97%~2.1%.