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| 对电感耦合等离子体质谱法测定的地下水中Ag元素不确定度的评定 | |
| 引用本文： | 王亚平,潘河,许春雪,代阿芳,王苏明,袁建.对电感耦合等离子体质谱法测定的地下水中Ag元素不确定度的评定[J].地质通报,2012,31(4):614-618. |
| 作者姓名： | 王亚平 潘河 许春雪 代阿芳 王苏明 袁建 |
| 作者单位： | 1. 国家地质实验测试中心,北京,100037 2. 黑龙江省地质矿产测试应用研究所,黑龙江哈尔滨,150036 3. 国家地质实验测试中心,北京100037;安徽地质实验研究所,安徽合肥230001 |
| 基金项目： | 国土资源部公益性行业科研专项《矽线石成分标准物质研制》(编号:200911044-02-3) |
| 摘 要： | 采用不确定度连续传递模型，对电感耦合等离子体质谱法测定的地下水中Ag元素的不确定度进行评定。采用双误差回归的方式对标准曲线进行拟合，通过计算出各分量的不确定度，合成得到测量结果的总不确定度。当实际样品中Ag的含量较低时，其曲线拟合产生的不确定度影响较大，甚至成为主导因素。 |
| 关 键 词： | 电感耦合等离子体质谱法 地下水 Ag 不确定度 双误差回归 |
Uncertainty evaluation for the determination of silver in groundwater samples by inductively coupled plasma-mass spectrometry |
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| WANG Ya-ping , PAN He , XU Chun-xue , DAI A-fang , WANG Su-ming , YUAN Jian.Uncertainty evaluation for the determination of silver in groundwater samples by inductively coupled plasma-mass spectrometry[J].Geologcal Bulletin OF China,2012,31(4):614-618. | |
| Authors: | WANG Ya-ping PAN He XU Chun-xue DAI A-fang WANG Su-ming YUAN Jian |
| Institution: | 1.National Research Center for Geoanalysis,Beijing 100037,China;2.Heilongjiang Institute of Geology and Mineral Test and Application,Harbin 150036,Heilongjiang,China;3.Anhui Institute of Geological Experiment,Hefei 230001,Anhui,China |
| Abstract: | The measurement uncertainty of the analytical results of Ag in groundwater samples by inductively coupled plasma-mass spectrometry (ICP-MS) was evaluated using continuous propagation model of uncertainty. The regression of double error was used in the course of standard curve fitting. The extended uncertainty of measurement results was obtained from the synthesis of uncertainties from each source. When the silver content of the actual samples is relatively low, the uncertainty generated in the course of standard curve fitting is comparatively large and even becomes the dominant factor. |
| Keywords: | ICP-MS groundwater silver uncertainty regression of double error |
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