The development of laser ablation ICP-MS and calibration strategies: Examples from the analysis of trace elements in volcanic glass shards and sulfide minerals

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Abstract

This contribution presents a review of the recent developments in laser ablation inductively coupled plasma-mass spectrometry. We describe the important developments which have occurred in the laser systems used, leading to a spatial resolution of around 20 μm, and give an overview of the major instrument developments which have affected the geological applications of laser ablation ICP-MS. We describe the calibration of laser ablation for the analysis of trace elements in two different matrices: volcanic glass shards and sulfide minerals. We show how single glass shards can be analysed using the National Institute of Standards and Technology (NIST) glass certified reference materials for calibration and demonstrate the effect of using single spot analyses compared to rastering of the calibration sample. We show the importance of inter-shard variation and demonstrate that averaged single shard analyses produce data which compare well with bulk analyses. The calibration of the laser system for sulfide mineral analysis is discussed and two different strategies are proposed, one using spiked pressed powder pellets of sulfides and the other metal reference materials. We present conclusions and recommendations for the calibration of laser ablation ICP-MS instruments.

Original languageEnglish
Pages (from-to)175-190
Number of pages16
JournalGeostandards Newsletter
Volume21
Issue number2
DOIs
Publication statusPublished - Dec 1997
EventSpecial Session on Analytical Methodologies and Geochemical Applications of LA-ICP-MS, at the 1996 Meeting of the American-Geophysical-Union - SAN FRANCISCO, Canada
Duration: 01 Dec 1996 → …

Keywords

  • INDUCTIVELY-COUPLED PLASMA
  • MASS-SPECTROMETRY
  • GEOCHRONOLOGY
  • MICROANALYSIS
  • MICROPROBE
  • CARBONATES
  • ZIRCON

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