| 化学分析中非线性曲线拟合结果的不确定度评定 |
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| 引用本文： | 占永革,黄湘燕,龚剑.化学分析中非线性曲线拟合结果的不确定度评定[J].冶金分析,2011,31(8):26-30. |
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| 作者姓名： | 占永革 黄湘燕 龚剑 |
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| 作者单位： | 1.广州大学环境检测中心，广东广州 510006；2.中山市供水有限公司水质检测中心，广东中山 528403 |
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| 基金项目： | 国家自然科学基金(40903040/D0309) |
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| 摘 要： | 为了评定非线性曲线拟合结果的不确定度，采用乘幂法将非线性曲线化为线性曲线，借助计算线性曲线拟合结果不确定度的一般公式来计算非线性曲线拟合结果的不确定度。评定过程及结果表明，此法简便易行，适用于2次及以上的高次曲线，可作为评定非线性曲线拟合结果不确定度的一般方法。
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| 关 键 词： | 不确定度 非线性拟合 校准曲线 化学分析 |
Evaluation of uncertainty of non-linear curve fitting results in chemical analysis |
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| ZHAN Yong-ge,HUANG Xiang-yan,GONG Jian.Evaluation of uncertainty of non-linear curve fitting results in chemical analysis[J].Metallurgical Analysis,2011,31(8):26-30. |
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| Authors: | ZHAN Yong-ge HUANG Xiang-yan GONG Jian |
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| Affiliation: | 1. Guangzhou University Environment Detection Center, Guangzhou 510006, China; 2.The Detection Center for Water Quality of Zhongshan City Water Supplied Co.,Zhongshan 528403, China |
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| Abstract: | In order to evaluate the uncertainty of non-linear curve fitting results,the non-linear curve was transformed into linear curve by power algorithm.On the basis of the general formula of uncertainty of linear curve fitting results,the uncertainty of non-linear curve fitting results was calculated.The evaluation process and results showed that,the proposed method was simple and easy to carry out.It was applicable for the high order curve(quadratic and higher),which could be used as the general method for the ... |
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| Keywords: | uncertainty nonlinear fitting calibration curve chemical analysis |
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