离子色谱测定水中无机阴离子的方法应用能力验证研究

Application Capacity of Inorganic Anions Determination Methods by Ion Chromatography

文章依据国家标准方法HJ 84-2016和HJ 168-2020,对离子色谱法测定水中F^(-)、Cl^(-)、Br^(-)、NO_(3)^(-)、PO_(4)^(3-)、SO_(4)^(2-)开展了方法应用能力验证,验证的主要内容包括标准曲线、方法检出限、测定下限、准确度和精密度。验证结果表明:六种无机阴离子的标准曲线线性关系、检出限、测定下限、准确度、精密度均满足国家标准方法HJ 84-2016要求,实验室的技术能力能达到该标准方法的要求,通过对离子色谱测定水中无机阴离子进行方法应用能力验证,有利于促进实验室检测能力的持续提高,确保检测结果准确、可靠。

According to the national standard methods HJ 84-2016 and HJ 168-2020,the method application proficiency test was carried out for the determination of F^(-),Cl^(-),Br^(-),NO_(3)^(-),PO_(4)^(3-),and SO_(4)^(2-)in water by ion chromatography.The main contents of the verification included the standard curve,method detection limit,lower determination limit,accuracy and precision.The verification results show that the linear relationship,detection limit,lower limit of determination,accuracy and precision of the standard curves of the six inorganic anions meet the requirements of the national standard method HJ 84-2016,and the technical capabilities of the laboratory can meet the requirements of the standard method.