化学分析计量
化學分析計量
화학분석계량
CHEMICAL ANALYSIS AND METERAGE
2014年
1期
73-76
,共4页
不确定度评定%分子吸收分光光度法%钼%辉钼矿
不確定度評定%分子吸收分光光度法%鉬%輝鉬礦
불학정도평정%분자흡수분광광도법%목%휘목광
uncertainty evaluation%molecular absorption spectrometry%molybdenum%molybdenite
对分子吸收分光光度法测定辉钼矿中钼元素的不确定度进行了评定,分析了不确定度的来源,包括工作曲线拟合、标准溶液配制、样品重复测定、分析仪器、样品称量、样品溶液定容等引入的不确定度。计算了钼含量测定结果的合成标准不确定度和扩展不确定度。当辉钼矿中钼含量为0.1081%时,扩展不确定度为0.0021%(k=2)。
對分子吸收分光光度法測定輝鉬礦中鉬元素的不確定度進行瞭評定,分析瞭不確定度的來源,包括工作麯線擬閤、標準溶液配製、樣品重複測定、分析儀器、樣品稱量、樣品溶液定容等引入的不確定度。計算瞭鉬含量測定結果的閤成標準不確定度和擴展不確定度。噹輝鉬礦中鉬含量為0.1081%時,擴展不確定度為0.0021%(k=2)。
대분자흡수분광광도법측정휘목광중목원소적불학정도진행료평정,분석료불학정도적래원,포괄공작곡선의합、표준용액배제、양품중복측정、분석의기、양품칭량、양품용액정용등인입적불학정도。계산료목함량측정결과적합성표준불학정도화확전불학정도。당휘목광중목함량위0.1081%시,확전불학정도위0.0021%(k=2)。
Uncertainty evaluation of measurement results for the determination of molybdenum in molybdenite samples by molecular absorption spectrometry (MAS) was carried out. The results showed that the sources of the total uncertainty were the standard curve fitting,the preparation of standard solution,repeat measurement of samples,analytical instrument,the weight of samples,the constant volume of samples. The combined standard uncertainty and the expanded uncertainty were calculated. The expanded uncertainty was 0.002 1%as molybdenum content was 0.108 1%.