高纯硝酸中金属离子残留量分析方法研究

Research of the Analysis Method for Metal Ion Residue in High-purity Nitric Acid

本文通过建立电感耦合等离子体原子发射光谱法(ICP-AES)测定高纯硝酸中的金属离子,采用标准曲线法定量分析高纯硝酸中Na、K,Ca、Mg、Al、Mn,Zn,As、Cd、Cr、Pb、Hg、Cu、Fe和Ni等残留杂质的含量,并进行方法学验证,包括线性关系、检出限、精密度和回收率,绘制的标准曲线的拟合程度基本大于0.999,可用于分析数据,精密度和回收率实验表明方法精密度良好。

In this paper, through the establishment of inductively coupled plasma atomic emission spectrometry （ICP-AES） to determine the metal ions in high purity nitric acid, besides, using the standard curve method to take quantitative analysis of the content of Na, K, Ca, Mg, AI, Mn, Zn, As, Cd, Cr, Pb, Hg, Cu, Fe and Ni etc. residual impurities in high purity nitric acid, and take the methodology validation including linear relationship, detection limit, degree of precision and recovery rate besides, the fitting degree of the drawn standard curve basically bigger than 0.999, which can be used for data analysis, in all, the precision degree and recovery rate experiments show that the precision of method is good.