摘要
不确定度不仅可以客观地描述实验室某项试验的有效性、可靠性,而且还可以定量说明一个实验室技术水平以及管理水平的高低。研究以火焰原子吸收光谱法检测钨精矿中铜的含量为例,建立不确定度评定数学模型,系统分析和量化影响不确定度的各因素,对该检测方法的不确定度进行评判。评判方法合理反映了钨精矿中铜含量的测定值的置信度,对处于标准限临界值时的测定值,测量不确定度对产品的符合性判断提供了可靠的理论依据。
Uncertainty can not only objectively describe the effectiveness and reliability of a laboratory test,but also quantitatively reflect the technical level and management level of a laboratory.This paper took the determination of copper content in tungsten concentrate by flame atomic absorption spectrometry as an example,established the mathematical model of uncertainty evaluation,systematicallyanalyzed and quantifiedthe factors affecting uncertainty,and evaluatedthe uncertainty of this detection method.The evaluation method reports the confidence of the copper value reasonably,and provides a reliable theoretical basis for the determination of the copper value at the standard limit critical value as well as the measurement uncertainty for the conformity judgment of the product.
作者
陈涛
曹远福
黄洋成
CHEN Tao;CAO Yuanfu;HUANG Yangcheng(Ganzhou Nonferrous Metallurgy Research Institute,Ganzhou 341000,Jiangxi,China;Jiangxi Nonferrous Geological Exploration Team 2,Ganzhou 341000,Jiangxi,China;China Nonferrous Metal Tungsten and rare metal products quality supervision and inspection center,Ganzhou 341000,Jiangxi,China)
出处
《中国钨业》
CAS
2020年第4期70-76,共7页
China Tungsten Industry
关键词
原子吸收
不确定度
钨精矿
铜
AAS
uncertainty
tungsten concentrate
copper
