电感耦合等离子体原子发射光谱法快速测定金锭中12种杂质元素

Rapid determination of 12 impurity elements in gold ingot by ICP-AES

摘要: 通过谱线优化与校正，建立了一种王水溶样后直接采用ICP-AES光谱仪快速测定金锭中12种杂质元素的方法，并对实验条件进行了优化。该方法检出限为0.17~0.47 μg/g，仪器检出限为0.00017~0.00560 μg/mL，加入标准物质回收率为95.65 %~111.37 %，精密度为0.72 %~1.76 %，准确度和精密度良好，且无需萃取分离金基体，简化了操作流程，提高了分析效率。

Abstract: This paper established a method for rapidly determining 12 impurity elements in gold ingots by direct ICP-AES spectrometer after aqua regia dissolution with the help of optimization and correction techniques， and optimized the test conditions. The determination limits of the method is 0.17-0.47 μg/g. The determination limits of the equipment is 0.00017-0.00560 μg/mL. The recovery of standard material is 95.65 %-111.37 %， and the precision is 0.72 %-1.76 %. The accuracy and precision are both good. The need to separate gold matrix by solvent extraction is omitted. The operation flow sheet is simplified and the analysis efficiency is improved.