Article(id=1149789749075997048, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1149789743237525714, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=null, receivedDateStr=null, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1752060838240, onlineDateStr=2025-07-09, pubDate=1744041600000, pubDateStr=2025-04-08, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1752060838240, onlineIssueDateStr=2025-07-09, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1752060838240, creator=13701087609, updateTime=1752060838240, updator=13701087609, issue=Issue{id=1149789743237525714, tenantId=1146029695717560320, journalId=1146119944283992078, year='2025', volume='3', issue='7', pageStart='1', pageEnd='160', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1752060836848, creator=13701087609, updateTime=1753700577901, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1156667315723821648, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1149789743237525714, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1156667315723821649, tenantId=1146029695717560320, journalId=1146119944283992078, issueId=1149789743237525714, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=107, endPage=109, ext={CN=ArticleExt(id=1152194710245831027, articleId=1149789749075997048, tenantId=1146029695717560320, journalId=1146119944283992078, language=CN, title=工业分析仪测量煤中灰分、挥发分的不确定度评定, columnId=1152194691782505406, journalTitle=实验室检测, columnName=评价与分析, runingTitle=null, highlight=null, articleAbstract=
评定工业分析仪在测量煤中灰分和挥发分时的不确定度,以提高煤质分析的准确性,并为工业分析仪的校准和维护提供科学依据。依据JJF 1140—2017《工业分析仪检定规程》,建立数学模型,分析影响灰分和挥发分示值误差的不确定度分量,并通过合成分量计算测量结果的不确定度。灰分测量的扩展不确定度为0.12%(k=2),挥发分测量的扩展不确定度为0.18%(k=2)。不确定度的主要来源包括仪器分辨率、环境温度波动、样品均匀性及重复性误差。本研究为工业分析仪的测量结果提供了可靠的不确定度评定方法,有助于提升煤质分析的精度和可靠性。依据 JJF 1140—2017《工业分析仪检定规程》中的仪器测量方法,本文建立了适合的数学模型,详细分析了影响煤中灰分、挥发分示值误差的不确定度分量,并通过合成这些分量,给出了工业分析仪检定装置灰分、挥发分测量结果的不确定度。本研究不仅提高了煤质分析的准确性,也为工业分析仪的校准和维护提供了科学依据。
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| 标准不确定度 分量 | 标准不确定度来源 | 灵敏 系数 | 标准不确定 度值 |
| $u\left( \bar{A}\right)$ | 煤中灰分的测量重复性 | 1 | 0.045 |
| $u\left( {A}_{\mathrm{S}}\right)$ | 标准物质定值的灰分标准 不确定度 | 1 | 0.7 |
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| 标准不确定度 分量 | 标准不确定度来源 | 灵敏 系数 | 标准不确定 度值 |
| $u\left( \bar{A}\right)$ | 煤中灰分的测量重复性 | 1 | 0.045 |
| $u\left( {A}_{\mathrm{S}}\right)$ | 标准物质定值的灰分标准 不确定度 | 1 | 0.7 |
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| 标准不确定度 分量 | 标准不确定度来源 | 灵敏 系数 | 标准不确定 度值 /% |
| $u\left( \bar{V}\right)$ | 煤中挥发分的测量重复性 | 1 | 0.049 |
| $u\left( {V}_{\mathrm{S}}\right)$ | 标准物质定值的挥发分标准 不确定度 | 1 | 0.17 |
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挥发分标准不确定度汇总表, figureFileSmall=null, figureFileBig=null, tableContent=
| 标准不确定度 分量 | 标准不确定度来源 | 灵敏 系数 | 标准不确定 度值 /% |
| $u\left( \bar{V}\right)$ | 煤中挥发分的测量重复性 | 1 | 0.049 |
| $u\left( {V}_{\mathrm{S}}\right)$ | 标准物质定值的挥发分标准 不确定度 | 1 | 0.17 |
), ArticleFig(id=1154352479501280206, tenantId=1146029695717560320, journalId=1146119944283992078, articleId=1149789749075997048, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 标准值 /% | 实测值 /% | 标准不确 定度 | 扩展不确定 度 |
| 1(灰分) | 11.12 | 11.15 | 0.083% | 0.17% |
| 2(挥发分) | 24.46 | 24.18 | 0.177% | 0.35% |
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测量结果不确定度报告表, figureFileSmall=null, figureFileBig=null, tableContent=
| 序号 | 标准值 /% | 实测值 /% | 标准不确 定度 | 扩展不确定 度 |
| 1(灰分) | 11.12 | 11.15 | 0.083% | 0.17% |
| 2(挥发分) | 24.46 | 24.18 | 0.177% | 0.35% |
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