煤中碳、氢的测量不确定度评定

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中图分类号：TQ533 文献标识码：B 文章编号：1003-0514（2025）04-0047-04

Evaluation of uncertainty in determination of carbon and hydrogen content in coal

WangLimin，YuChunbo，YaoRuixue，DuShiyi，SunJuan （Beijing ShougangCo.，Ltd.，QiananHebei O644O4，China）

Abstract：Evaluating the uncertaintyof measurementofcarbon，hydrogen content incoalcould improvetheaccuracyof data ofcarbon，hydrogencontentdeterminedbylaboratoryandimprovethecorresponding technicallevelof laboratorytesting. LECO CHN628 wasused to determinecarbonand hydrogencontent incoal.The sources of uncertainty were analyzed. The mathematical model of the uncertaintycomponent were established.The uncertaintycomponents such as repetitionof determination，sample weighing，reagent purityand Linearityin curve calibration were discussd.The combinedstandard uncertainty and extended uncertainty of the carbon， hydrogen content in coal sample were calculated.

Key Words：LECO CHN628；carbon and hydrogen content；evaluation of uncertainty；mathematical model

0引言

测量的水平和质量通常用“测量不确定度”来评价，测量不确定度是对测量结果可信程度的一个表征参数。（剩余3126字）