| 微波消解—电感耦合等离子体质谱法测定植物中痕量稀土元素 |
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| 引用本文： | 曹心德,尹明.微波消解—电感耦合等离子体质谱法测定植物中痕量稀土元素[J].环境化学,1999,18(3):274-279. |
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| 作者姓名： | 曹心德 尹明 |
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| 作者单位： | [1]南京大学环境科学与工程系污染控制与资源化研究国家重 [2]中国地质科学院岩矿测试技术？ |
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| 基金项目： | 国家自然科学基金（批准号:29890280-1） |
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| 摘 要： | 研究了电感耦合等离子体质谱（ＩＣＰ－ＭＳ）测定植物中痕量稀土元素（ＲＥＥｓ）的方法。详细讨论了测定稀土元素的质谱干扰及基体的抑制效应，采用代数法可有效地校正质谱干扰，内标法可以补偿基体的抑制效应。根据植物标准参考物质（ＧＳＶ－２，ＧＳＶ－４）的分析结果评价方法的准确性。在微波条件下，ＨＦ／ＨＣｌＯ４／ＨＮＯ３混合体系能快速而有效地分解植物样品，直接稀释后用ＩＣＰ－ＭＳ测定其中的稀土元素。
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| 关 键 词： | 等离子体质谱 稀土元素 植物 微波消解 痕量 |
DETERMINATION OF ULTRATRACE RARE EARTH ELEMENTS IN PLANTS BY INDUCTIVELY COUPLED PLASMA-MASS SPECTROMETRY AFTER MICROWAVE DIGESTION |
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| Cao Xinde,Wang Xiaorong.DETERMINATION OF ULTRATRACE RARE EARTH ELEMENTS IN PLANTS BY INDUCTIVELY COUPLED PLASMA-MASS SPECTROMETRY AFTER MICROWAVE DIGESTION[J].Environmental Chemistry,1999,18(3):274-279. |
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| Authors: | Cao Xinde Wang Xiaorong |
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| Abstract: | Inductively coupled plasma-mass spectrometry (ICP-MS) has been employed to determine the concentrations of rare earth elements( REEs) in plants. For a prompt sample decomposition, a microwave digestion was successfully used with a mixture of HF/HCl4/HNO3. The potential of the method was evaluated by analysis of REEs in standard reference materials(GSV-2,GSV-4) .The results agree well with the certified values. Spectroscopic interferences and matrix suppression effects were studied in detail. Precision was better than 8 % . The experimental results show that the proposed method is simple, precise and accurate, and that the concentrations and distribution of REEs in plants vary with plant types. |
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| Keywords: | TCP-MS REEs plant microwave digestion |
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