原子荧光光谱法测定地下水中汞的方法验证
Method Validation of Determination of Mercury in Groundwater by Atomic Fluorescence Spectrometry
景铭铭 1丁超 1于航1
作者信息
- 1. 白山市产品质量检验所,吉林 白山 134300
- 折叠
摘要
依据《环境监测分析方法标准制定技术导则》(HJ 168-2020)中方法验证的相关规定[1],对环境标准《水质汞、砷、硒、铋和锑的测定原子荧光法》(HJ 694-2014)所涉及汞的方法检出限、测定下限、精密度和准确度[2]进行验证.本文选用方法检出限的 2.5 倍和 5 倍进行 7 次平行测定,计算出检出限为 0.02μg/L,测定下限为 0.08μg/L,符合标准要求.精密度的相对标准偏差为 0.41%～4.5%,准确度的相对标准偏差为 0.26%～7.9%,均达到《地下水环境监测技术规范》(HJ 164-2020)中质量控制要求[3].
Abstract
According to HJ 168-2020 Technical guideline for the development of environmental monitoring analytical method stangards,the method detection limit,the lower limit of detectionr,precision and accuracy of mercury in the environmental standard HJ 694-2014 Water Quality-Determination of Mercury Arsenic,Selenium,Bismuth and Antimony-Atomic Fluorescence Spectrometry were verified.In this article,2.5 times and 5 times of the detection limit of the method were selected for seven parallel determinations.The result showed that the detection limit was 0.02μg/L,the lower limit of detection was 0.08μg/L,meeting the standard requirements.The relative standard deviation of precision was 0.41%～4.5%,and the relative standard deviation of accuracy was 0.26%～7.9%,both of which met the quality control requirements of HJ 164-2020(Technical specifications for environmental monitoring of groundwater).
关键词
原子荧光/汞/方法验证Key words
atomic fluorescence/mercury/method validation引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据