中国标准化Issue(7)：213-216,4.DOI:10.3969/j.issn.1002-5944.2025.07.036
火焰原子荧光光谱法测试土壤中六价铬的不确定度评定
Uncertainty Evaluation for Determination of Hexavalent Chromium in Soil by Flame Atomic Fluorescence Spectrometry
摘要
Abstract
The experiment aims to establish an uncertainty evaluation method for the determination of hexavalent chromium in soil by flame atomic fluorescence spectrometry,to truly reflect the confidence and accuracy of the measurement.In accordance with the sources of uncertainty in the experimental method,the uncertainty components were meticulously subdivided and quantified.The combined relative standard uncertainty was computed by taking into account the uncertainties of sample weighing,extraction,standard curve,and repeated measurement.The experiment indicated that particular attention should be paid to the pretreatment of samples and the preparation of the standard working solution.The concentration of the sample to be tested should be located in the middle of the curve,which can enhance the detection accuracy.During the experiment,the accuracy of the measurement results can also be improved by selecting a more precise balance and increasing the number of parallel tests.关键词
六价铬/火焰原子荧光光谱(FAFS)/不确定度Key words
hexavalent chromium/flame atomic fluorescence spectroscopy(FAFS)/uncertainty引用本文复制引用
肖志博,吕晓惠,陈亚南,郭春焕,冯亚敏,杨照生,刘丽颖,王猛,刘彦庭..火焰原子荧光光谱法测试土壤中六价铬的不确定度评定[J].中国标准化,2025,(7):213-216,4.基金项目
本文受华北地质勘查局综合普查大队科研项目(项目编号:普科[2023]-C06)资助. （项目编号:普科[2023]-C06）
