摘要
为了评估煤中硫化铁硫含量测定的测量不确定度,采用原子吸收分光光度法,以实测数据为基础,建立了完整的测量模型,系统分析了样品重复测定、样品称量、稀释及定容、标准溶液配制及标准曲线拟合等各环节产生的不确定度来源。借助计算各个不确定度分量最终合成了标准不确定度和扩展不确定度,研究表明,不确定度主要来源于工作曲线拟合环节,该因素对整体测量精度的影响最显著。
To evaluate the measurement uncertainty in determining iron sulfide sulfur content in coal,atomic absorption spectrophotometry was employed.Based on actual measurement data,a comprehensive measurement model was established.The study systematically analyzed uncertainty sources arising from various stages,including sample replicate measurements,sample weighing,dilution and volume adjustment,standard solution preparation,and calibration curve fitting.By calculating individual uncertainty components,the standard uncertainty and expanded uncertainty were ultimately synthesized.The study indicates that the primary source of uncertainty stems from the calibration curve fitting stage,which exerts the most significant influence on overall measurement precision.
作者
王斌
王培
赵金秋
Wang Bin;Wang Pei;Zhao Jinqiu(Hebei Co.,Ltd.,China Certifi cation&Inspection Group,Shijiazhuang 050000,China)
出处
《当代化工研究》
2026年第3期90-92,共3页
Modern Chemical Research
关键词
硫化铁硫
原子吸收分光光度法
煤炭
不确定度
iron sulfide sulfur
atomic absorption spectrophotometry
coal
uncertainty
