激光原位 LA-MC-ICP-MS 测定地质样品 Sm-Nd 同位素方法新进展

Translated title of the contribution: New progresses in analytical methods of in situ Sm-Nd isotope measurement of natural geological samples by laser ablation multi-collector ICP mass spectrometry

Yue Heng Yang, Jin Hui Yang, Fu Yuan Wu, Lie Wen Xie, Chao Huang

Research output: Contribution to journalArticle

Abstract

The new progresses in analytical methods of in situ Sm-Nd isotope measurement of natural geological samples by using laser ablation multi-collector ICP mass spectrometry (LA-MC-ICP-MS) since 2006 have been reviewed in this paper. The review is focused on description of analytical protocol for isobaric interference correction of in situ Sm-Nd isotopie measurement by using LA-MC-ICP-MS. As it suggested, the reliable 147Sm/144Nd and 143Nd/144Nd data of light REE enriched accessory minerals can be obtained by using LA-MC-ICP-MS. This is a primary technique for the in site Sm-Nd i-sotopic measurement of geological samples at present. Combining with U-Th-Pb dating and trace element analysis of accessory minerals, some important geochemical constraint parameters on the genetic evolution of those accessory minerals could be obtained. It is prospective that the combined in situ measurement technique for analyzing multiple isotopie systems (such as Sr-Nd-Hf isotopes), dating U-Th-Pb ages, analyzing trace elements of low contents geological samples (<500 ppm), and measuring precisely the Sm-Nd isotopie compositions of minerals with high Sm/Nd ratios (such as the Sm/Nd ratio of xenotime is much higher than 1, even up to 10) will be one of the major development directions for the in situ Sm-Nd isotopie measurement by using LA-MC-ICP-MS in the near future.

Original languageChinese
Pages (from-to)422-431
Number of pages10
JournalBulletin of Mineralogy Petrology and Geochemistry
Volume35
Issue number3
DOIs
Publication statusPublished - 10 May 2016
Externally publishedYes

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Bibliographical note

jī guāng yuán wèi LA-MC-ICP-MS cè dìng dì zhì yàng pǐn Sm-Nd tóng wèi sù fāng fǎ xīn jìn zhǎn

Keywords

  • Laser probe
  • Natural geological samples
  • Review
  • Sm-Nd isotope

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