| ICP-AES分析茶叶中Mg和K含量的不确定度评定 |
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| 引用本文： | 彭彩华,尹平河. ICP-AES分析茶叶中Mg和K含量的不确定度评定[J]. 光谱实验室, 2011, 28(1): 196-200 |
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| 作者姓名： | 彭彩华 尹平河 |
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| 作者单位： | 暨南大学生命科学技术学院化学系;暨南大学分析测试中心; |
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| 基金项目： | 国家自然科学基金资助项目(20772048); 广东省基金(06025194及2005A30503001); 863项目(2006AA09Z408) |
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| 摘 要： | 对用电感耦合等离子体-原子发射光谱法(ICP-AES)测定茶叶中的金属元素Mg、K含量的不确定度来源进行分析和计算.其分析方法的标准不确定度主要来源包括物质称量、线性回归拟合、溶液稀释等过程,并依据不确定度的评定方法计算各不确定度分量,结果表示茶叶中Mg、K的含量依次为1773、16666mg/kg,标准不确定度依次为...
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| 关 键 词： | 不确定度 电感耦合等离子体-原子发射光谱法 镁 钾 |
Uncertainty Evaluation of Measurement Results for the Determination of Magnesium and Potassium in Tea by ICP-AES |
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| PENG Cai-Hua,YIN Ping-He. Uncertainty Evaluation of Measurement Results for the Determination of Magnesium and Potassium in Tea by ICP-AES[J]. Chinese Journal of Spectroscopy Laboratory, 2011, 28(1): 196-200 |
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| Authors: | PENG Cai-Hua YIN Ping-He |
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| Affiliation: | PENG Cai-Hua a YIN Ping-He a,ba(School of Chemistry,Department of Life Science and Technology,Jinan University,Guangzhou 510632,P.R.China)b(Analysis and Testing Center of Jinan University,P.R.China) |
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| Abstract: | Uncertainty of measurement results for the determination of magnesium and potassium in tea by ICP-AES were evaluated.The major impact factors were analyzed and their uncertainty caused by weighing using analytical balance,fitting by linear regression,diluting were evaluated individually.The contents of magnesium and potassium in tea were 1773,16666mg/kg and their uncertainty of measurement were 21.6,648.0mg/kg,respectively. |
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| Keywords: | Uncertainty ICP-AES Magnesium Potassium |
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