连续流动法测定烟草中水溶性总糖和还原糖的不确定度评定
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摘要
依据JJF 1059. 1-2012《测量不确定度评定与表示》对连续流动法测定烟草样品中水溶性总糖、还原糖含量的不确定度进行评定,通过分析得出,测量重复性、样品前处理、标准溶液制备、标准曲线拟合、连续流动分析仪测量重复性是不确定度的主要来源。分析结果表明,当烟草样品中水溶性总糖为20. 4%时,扩展不确定度为0. 69%,k=2;还原糖含量为18. 4%,扩展不确定度为0. 77%,k=2。
According to"JJF 1059. 1-2012 Measurement Uncertainty Evaluation and Representation",the uncertainty of determination of water-soluble total sugar and reducing sugar content in tobacco samples by continuous flow method was evaluated. Through analysis,measurement repeatability,sample pretreatment,standard solution preparation,standard curve fitting,and continuous flow analyzer measurement repeatability are the main sources of uncertainty. The analysis results show that when the water-soluble total sugar in the tobacco sample is 20. 4%,the expansion uncertainty is 0. 69%,k = 2; the reducing sugar content is 18. 4%,the expansion uncertainty is0. 77%,k = 2.
According to"JJF 1059. 1-2012 Measurement Uncertainty Evaluation and Representation",the uncertainty of determination of water-soluble total sugar and reducing sugar content in tobacco samples by continuous flow method was evaluated. Through analysis,measurement repeatability,sample pretreatment,standard solution preparation,standard curve fitting,and continuous flow analyzer measurement repeatability are the main sources of uncertainty. The analysis results show that when the water-soluble total sugar in the tobacco sample is 20. 4%,the expansion uncertainty is 0. 69%,k = 2; the reducing sugar content is 18. 4%,the expansion uncertainty is0. 77%,k = 2.
引文
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[3]YC/T 159-2002《烟草及烟草制品水溶性糖的测定连续流动法》[S].
[4]YC/T 468-2013《烟草及烟草制品总植物碱的测定连续流动法》[S].
[5]YC/T 161-2002《烟草及烟草制品总氮的测定连续流动法》[S].
[6]YC/T 162-2002《烟草及烟草制品氯的测定连续流动法》[S].
[7]YC/T 245-2008《烟草及烟草制品氨的测定连续流动法》[S].
[8]YC/T 253-2008《卷烟主流烟气中氰化氢的测定连续流动法》[S].
[9]孔浩辉,程志颖,郭璇华,等.烟草中果胶含量连续流动测定方法的改进[J].烟草科技,2014(12):57~60.
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[11]张杰,马雁军,石睿,等.硫氰化钾与DCIC反应法测定烟草总植物碱[J].烟草科技,2014(5):60~63.
[12]王洪波,郭军伟,殷延齐,等.卷烟侧流烟气中氨释放量的连续流动法测定[J].烟草科技,2016(5):38~44.
[13]JJF 1059. 1-2012《测量不确定度评定与表示》[S].
[14]ISO/IEC 17025:2017“General requirements for the competence of testing and calibration laboratories”[S].
[15]CNAS-CL01:2018《检测和校准实验室能力认可准则》.
[16]RB/T 214-2017《检验检测机构资质认定能力评价检验检测机构通用要求》.
[17]YC/T31-1996《烟草及烟草制品试样的制备和水份测定烘箱法》.
[2]史宏志,刘国顺.烟草香味学[M].北京:中国农业出版社,1998.
[3]YC/T 159-2002《烟草及烟草制品水溶性糖的测定连续流动法》[S].
[4]YC/T 468-2013《烟草及烟草制品总植物碱的测定连续流动法》[S].
[5]YC/T 161-2002《烟草及烟草制品总氮的测定连续流动法》[S].
[6]YC/T 162-2002《烟草及烟草制品氯的测定连续流动法》[S].
[7]YC/T 245-2008《烟草及烟草制品氨的测定连续流动法》[S].
[8]YC/T 253-2008《卷烟主流烟气中氰化氢的测定连续流动法》[S].
[9]孔浩辉,程志颖,郭璇华,等.烟草中果胶含量连续流动测定方法的改进[J].烟草科技,2014(12):57~60.
[10]孔浩辉,程志颖,张心颖.烟草中蛋白质含量的快速测定[J].烟草科技,2014(3):38~41.
[11]张杰,马雁军,石睿,等.硫氰化钾与DCIC反应法测定烟草总植物碱[J].烟草科技,2014(5):60~63.
[12]王洪波,郭军伟,殷延齐,等.卷烟侧流烟气中氨释放量的连续流动法测定[J].烟草科技,2016(5):38~44.
[13]JJF 1059. 1-2012《测量不确定度评定与表示》[S].
[14]ISO/IEC 17025:2017“General requirements for the competence of testing and calibration laboratories”[S].
[15]CNAS-CL01:2018《检测和校准实验室能力认可准则》.
[16]RB/T 214-2017《检验检测机构资质认定能力评价检验检测机构通用要求》.
[17]YC/T31-1996《烟草及烟草制品试样的制备和水份测定烘箱法》.