| 土壤中全磷测定的不确定度评定 |
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| 引用本文： | 黄金丽,汪聪慧,孙宝利,张晓娟,张国良,范中南.土壤中全磷测定的不确定度评定[J].现代科学仪器,2011(6):120-123. |
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| 作者姓名： | 黄金丽 汪聪慧 孙宝利 张晓娟 张国良 范中南 |
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| 作者单位： | 中国农业科学院农业环境与可持续发展研究所，北京100081／农业部农业环境与气候变化重点开放实验室，北京100081 |
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| 摘 要： | 本文叙述了土壤中全磷测定的不确定度评定方法,主要包括数学模型的建立、测量不确定度来源识别如测量重复性、称重、定容、液体转移、温度、标准曲线等、各输入量的测量不确定度及其相对不确定度分量、各相对不确定度分量合成和合成标准不确定度计算、扩展不确定度的确定等内容,从而得到测量结果的报告形式。通过不确定度方法评定,得到测定结果的表示方式为（0.197±0.014）%;（k=2）。
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| 关 键 词： | 不确定度评定 分光光度法 总磷 土壤 |
The Evaluation of Uncertainty Measurement in Determination of Soil Total Phosphorus |
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| Huang Jinli,Wang Conghui,Sun Baoli,Zhang Xiaojuan,Zhang Guoliang,Fan Zhongnan.The Evaluation of Uncertainty Measurement in Determination of Soil Total Phosphorus[J].Modern Scientific Instruments,2011(6):120-123. |
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| Authors: | Huang Jinli Wang Conghui Sun Baoli Zhang Xiaojuan Zhang Guoliang Fan Zhongnan |
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| Affiliation: | Huang Jinli1,2,Wang Conghui1,Sun Baoli1,Zhang Xiaojuan1,Zhang Guoliang1,Fan Zhongnan1,2 (1Institute of Environment and Sustainable Development in Agriculture,CAAS,Beijing,100081,2 The Key Laboratory of Agro-Environment & Climate Change,The Ministry of Agriculture,Beijing 100081) |
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| Abstract: | The Evaluation of Uncertainty Measurement in determination of soil total phosphorus is introduced in detail.This method includes setting up a mathematical model,discerning the sources affecting measurement result,such as the repeatability,weighting constant volume,liquid transferring,temperature,standard curve and so on,quantifying each uncertainty source,synthesizing relative uncertainty source and calculating the combined related standard uncertainty,determining expanded uncertainty and finally geting rep... |
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| Keywords: | Evaluation uncertainty Spectrophotometric method Total phosphor Soil |
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