火焰原子吸收法测定水中铁的不确定度评定

测量不确定度是表征合理地赋予被测量值的分散性,与测量结果相联系的参数,通过火焰原子吸收分光光度法对水中铁的不确定度进行评定,确定铁测量不确定度的来源主要为工作曲线拟合、消解过程、重复测定和分析仪器,最主要来源是工作曲线,其他测量因素引起的分量较小,可以不予考虑。通过合理选择不确定度分量,优化评定过程,减少评定环节,达到对不确定度合理评定的目的。

Evaluation of Uncertainty for the Determiation of Iron in water by Flame Atomic Absorption Spectrometry

Uncertainty is the parameter that attributes the dispersity of measured value and tied with the determinate value.Through the uncertainty analysis of iron in water by flame atomic absorption spectrophotometric method.Make sure iron source of uncertainty of measurement is mainly for working curve fitting,dissolution process,repeat determination and analytical instruments.The main work curve to source,other measuring factors cause weight smaller,can not be considered.Through the rational choice uncertainty co...