| 人体血浆中15种超良量稀土元素的电感耦合等离子体质谱法 … |
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| 引用本文： | 陈杭亭,曹淑琴,曾宪津,孟路,赵大庆,倪嘉缵.人体血浆中15种超良量稀土元素的电感耦合等离子体质谱法 …[J].光谱学与光谱分析,2000,20(3):339-342. |
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| 作者姓名： | 陈杭亭 曹淑琴 曾宪津 孟路 赵大庆 倪嘉缵 |
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| 作者单位： | 中国科学院长春应用化学研究所，国家电化学和光谱研究分析中心!130022长春，中国科学院长春应用化学研究所，国家电化学和光谱研究分析中心!130022长春，中国科学院长春应用化学研究所，国家电化学和光谱研究分析中心!130022长春，长春应用化学研究所，稀土化学物理开放实验室!130022 |
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| 基金项目： | 国家教委留学归国基金，国家自然科学基金委重大项目资助 |
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| 摘 要： | 本文用电感耦合等离子体质谱法测定了人体血浆中的稀土元素。在优化的条件下 ,以内标法测得的各种纯水溶液的检测限在 0 .7(Eu)～ 5 .4(Gd) ng·L- 1范围内。研究了 K,Na,Ca,Fe等基体元素对稀土测定的影响。以 In为内标元素补偿样品基体效应以及灵敏度飘移。比较了直接稀释、HNO3- H2 O2 消解及 HNO3-HCl O4消解 3种样品处理方法 ,用 1% HNO3直接稀释样品可满足轻稀土元素的定量分析要求 ,方法的定量测定下限≤ 1μg·L- 1。
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| 关 键 词： | 电感耦合等离子体－质谱 人血浆 稀土元素 测定 |
Determination of Ultra-trace Rare-earth Elements in Human Plasma by Inductively Coupled Plasma Mass Spectrometry |
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| Hangting CHEN,Shuqing CAO and Xianjin ZENG Changchun Institute of Applied Chemistry,The Chinese Academy of Sciences,Natio nal Electrochemistry and the Analysis Center of Spectroscopy Research, Ch angchun Lu MENG,Daqing ZAO and Jiazan NI Changchu.Determination of Ultra-trace Rare-earth Elements in Human Plasma by Inductively Coupled Plasma Mass Spectrometry[J].Spectroscopy and Spectral Analysis,2000,20(3):339-342. |
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| Authors: | Hangting CHEN Shuqing CAO and Xianjin ZENG Changchun Institute of Applied Chemistry The Chinese Academy of Sciences Natio nal Electrochemistry and the Analysis Center of Spectroscopy Research Ch angchun Lu MENG Daqing ZAO and Jiazan NI Changchu |
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| Institution: | Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, National Electrochemistry and the Analysis Center of Spectroscopy Research, 130022 Changchun. |
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| Abstract: | Inductively coupled plasma mass spectrometry (ICP-MS), highly sensitive inorgnic analytic technique, fits to determine ultra-trace rare-earth elements in human plasma. Under the optimized conditions detection limits for 15 rare-earth elements are in the range of 0.7 (for Eu)-5.4 (for Gd) ng.L-1. Indium as an internal standard element is used to compensate for matrix suppression effect and sensitivity drift. Three kinds of preparation methods, diluted with 1% HNO3, digested with HNO3-H2O2 and with HNO3-HClO4, are checked and compared, and the former is the simplest way to be measured. The samples diluted with 1% HNO3, stored in 4 degrees C, are very steady for 16 days. With the method, 11 healthy plasma samples in Changchun area of China are analysed. |
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| Keywords: | Inductively coupled mass spectrometry Human pl asma Rare-earth elements Determination |
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