| 激光剥蚀等离子质谱微区分析在固体地球科学中的应用进展 |
| |
| 引用本文： | 刘民武,赫英.激光剥蚀等离子质谱微区分析在固体地球科学中的应用进展[J].地球科学进展,2003,18(1):116-121. |
| |
| 作者姓名： | 刘民武 赫英 |
| |
| 作者单位： | 西北大学大陆动力学教育部重点实验室,西北大学地质系,陕西,西安,710069 |
| |
| 基金项目： | 国家重点基础研究发展规划项目"大规模成矿作用与大型矿集区预测"(编号:G1999043211)，国土资源大调查项目"中国超大型铜镍铂岩浆硫化物矿床预测研究"(编号:200110200058)资助 |
| |
| 摘 要： | 当前分析化学技术正向着痕量微区方向发展。这使得我们能够用更小更少的样品直接得到更多的地球化学信息。在诸多微区测试技术中，激光剥蚀等离子质谱（LA-ICPMS）技术发展最快。其地质应用较广，激光探针等离子体质谱能够进行固体样品的微区微量元素和同位素的分析，具有灵敏度高、简便、快速的特点，同样具有在同位素定年上的潜力。近年来又研制出激光剥蚀多道接收等离子质谱（LA-MC-ICPMS）仪，使得微区同位素分析开始了新的革命。而多种微区技术综合应用为近几年分析地球化学新的趋势。
|
| 关 键 词： | 激光剥蚀等离子质谱 LA-ICPMS 微区分析 固体地球科学 包裹体 同位素 |
| 文章编号： | 1001-8166(2003)01-0116-06 |
| 收稿时间： | 2002-06-10 |
| 修稿时间： | 2002年6月10日 |
PROGRESS OF LASER ABLATION INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY(LA-ICPMS) APPLIED IN EARTH SCIENCE |
| |
| Liu Minwu,He Ying.PROGRESS OF LASER ABLATION INDUCTIVELY COUPLED PLASMA MASS SPECTROMETRY(LA-ICPMS) APPLIED IN EARTH SCIENCE[J].Advance in Earth Sciences,2003,18(1):116-121. |
| |
| Authors: | Liu Minwu He Ying |
| |
| Institution: | Department of Geology, Northwest University, Xi'an 710069, China |
| |
| Abstract: | More geological information can be obtained from very small samples due to the analytical technique development toward trace elements and in micro area. Within all of the microprobe techniques, the laser ablation inductively coupled plasma mass spectrometry(LA-ICPMS) has became even more powerful tool to geological samples in the quantitative analysis of major and minor element in situ owe to the very high sensitivity of ICPMS and direct laser sampling. Many works have done in minor element and REE normalization modeling, trace metal and PGE partitioning in minerals and magma, fluid inclusions and isotope age dating analysis. The LA-ICP-MS technique is capable not only of achieving precise trace elemental analysis, but also of dating 207Pb/206Pb ages at about the 1% level for?1000 Ma zircons,206Pb/238U ages with precision of 2%~5% for Mesozoic(156~126 Ma)zircons. lt is likely that this simple and relatively low cost technique is able to achieve age results even comparable to the SHRIMP-type ion probe in the measurement of the relatively large(>100μm) and homogeneous zircons. However, it still has the disadvantage of lower spatial resolution and sensitivity, standard samples incomparable with some samples to be analyzed, which limits its application to precise analyzing minerals with relatively lower REE and dating of small and/or heterogeneous zircons of Phanerozoic ages. Recently developed laser ablation multiple collector inductively coupled plasma(LA-MC-ICPMS)put forward the isotope concentration in situ analysis technique in sensitivity and simplicity. Multiple using of varies in situ techniques for combined information is the new trend in analytical geochemistry. |
| |
| Keywords: | LA-ICPMS LA-MC-ICPMS Trace analysis Inclusion Isotope |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球科学进展》浏览原始摘要信息 |
| 点击此处可从《地球科学进展》下载免费的PDF全文 |
