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| Uncertainty Evaluation of Toluene in Solvent Based Coatings by GC |
| SHAO Hong-xia,JIANG Min-fang,ZHAO Xin-jian |
| The State Center of Supervision and Test for Chemical Building Materials, Hangzhou, Zhejiang 310018, China |
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Abstract According to the national standard of GB18581—2001, a method for uncertainty evaluation of toluene by GC is developed. Since the mathematic model contains two nonlinear functions, the various variables among the procedures are analyzed and the uncertainty is calculated by relative standard uncertainty. By synthesizing the uncertainties of various component variables, the combined uncertainty is 0.020% and the expanded uncertainty is 0.040%. Comparing the method for uncertainty evaluation by getting sensitivity coefficient from derivation, this method is time-saved and efficient.
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［1］ISO/IEC 17025,General requirements for the competence of testing and calibration laboratories［S］.
［2］潘华先,刘莉莉.硫代硫酸钠标准溶液标定的不确定度评定方法研究［J］.生物医学工程研究,2006,4:269~271.
［3］杨敏国.4-氨基安替比林直接光度法测定水中挥发酚含量的不确定度评定［J］.福建分析测试,2007,3:79~83.
［4］方伟,王玉鹏,禹秉熙.双锥腔互补偿型绝对辐射计的测量不确定度分析［J］. 计量学报,2009,30(4):312~316.
［5］王伟,潘春秀.光度法测定钢铁及合金中锰含量的不确定度评定［J］. 计量学报,2005,26(2):189~192.
［6］JJF 1059-1999,测量不确定度评定与表示［S］. |
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2010, Vol. 31 
