Rapid and simultaneous determination of multi-element abundances and U-Pb age for zircon crystal using UV laser ablation ICP-MS technique: critical evaluation of the technique with 91500 zircon standard
Rapid and simultaneous determination of multi-element abundances and U-Pb age for zircon crystal using UV laser ablation ICP-MS technique: critical evaluation of the technique with 91500 zircon standard
复制标题
使用紫外激光烧蚀 ICP-MS 技术快速同时测定锆石晶体的多元素丰度和 U-Pb 年龄：使用 91500 锆石标准品对该技术进行严格评估
DOI：
10.2465/jmps.98.109
复制
发表时间：
2003
影响因子：
0.7
通讯作者：
Hideto Yoshida
中科院分区：
文献类型：
--
作者：
Y. Orihashi;T. Hirata;K. Tani;Hideto Yoshida
本文介绍了一种从锆石晶体单点同时测定稀土元素、铀、钍、铅丰度和U-Pb年龄的新分析技术。它使用紫外（UV）激光烧蚀-电感耦合等离子体质谱法（LA-ICP-MS）。多元素丰度数据与U-Pb年龄数据的耦合可以为火成岩的成因研究和沉积岩、变质岩的物源研究提供穿透性信息。同时分析了91500锆石标准样品的REE、U、Th、Pb丰度和207 Pb/206 Pb、206 Pb/238 U比值，以检验测量的准确性和评价标准样品颗粒内的均匀性。几乎所有的稀土元素（REE）的丰度数据显示出良好的协议与二次离子质谱（西姆斯）和LA-ICP-MS数据。本研究获得的数据在已发表数据的范围内。唯一的例外是Er、Lu、Pb和U的丰度数据。这些元素在很大程度上不同于已发表的数据，超出了我们测量的精度（SD为± 10%）。本文的结果与前人的数据之间的巨大差异可以用锆石标准中不同颗粒之间的不均匀性来解释。在U-Pb年龄方面，238 U-206 Pb和207 Pb-206 Pb年龄分别为1131±152 Ma（2SD）和1156±132 Ma（2SD），在本研究的分析不确定度（± 20%，2SD）范围内，与TIMS数据吻合良好。稀土元素、铀、钍、铅的丰度数据和铀-铅同位素数据表明，LA-ICPMS技术可为多元素丰度和铀-铅年龄测定提供一种快速、通用的方法。
A new analytical technique for simultaneous determinations of REE, U, Th, Pb abundances and U-Pb age from a single analysis spot of zircon crystal is presented in this paper. It uses ultra-violet (UV)-laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS). Coupling of multi-element abundance data and U-Pb age data can provide piercing information for petrogenetic studies of igneous rocks and for provenance studies of sedimentary and metamorphic rocks. The REE, U, Th and Pb abundances and 207Pb/206Pb and 206Pb/238U ratios for a 91500 zircon standard were simultaneously analyzed in order to test the accuracy of the measurement and to evaluate a homogeneity within a grain of the standard sample. The resulted abundance data for almost of all rare earth elements (REE) show good agreement with those obtained by the secondary ion mass spectrometry (SIMS) and with LA-ICP-MS data. The data obtained in this study fell in the range of published data. Only exception is the abundance data for Er, Lu, Pb and U. These elements are differed largely from the published data beyond the precision of our measurements (∼10% in SD). The large discrepancy between present results and previous authors’ data can be explained by heterogeneity among different grains of the zircon standard. In the case of U-Pb age, resulted 238U-206Pb and 207Pb-206Pb ages were 1131±152 Ma (2SD) and 1156±132 Ma (2SD), respectively, showing an excellent agreement with the TIMS data within analytical uncertainties achieved in this study (∼20%, 2SD). The abundance data for REE, U, Th and Pb, together with U-Pb isotopic ones demonstrate clearly that the present LA-ICPMS technique can provide a rapid and versatile tool for the multi-element abundances and U-Pb age determinations.
影响因子：
3.5
作者：
Belousova, EA;Griffin, WL;Fisher, NI
通讯作者：
Fisher, NI
影响因子：
3.9
作者：
Sano, Y;Terada, K;Fukuoka, T
通讯作者：
Fukuoka, T