This paper presents a calibration strategy for LA-ICP-MS accurate analysis of major and trace elements of hydrous silicate minerals, which is internal standard-independent and applies multiple reference materials for external calibration. The total content of the volatile components in the hydrous silicate minerals was firstly calculated based on the mineral constant stoichiometry. Then, major and trace elements were quantified by calibrating against multiple reference materials (e. g., MPI-DING and USGS glasses) combined with normalization of all metal oxides to the sum of 100% minus the total volatile components. Analyses of amphibole, tremolite, tourmaline as well as epidote by LA-ICP-MS using the calibration strategy match the results of electron microprobe analyses within 5% uncertainty for the major elements which are homogeneous in samples. The results are consistent with the analysis of solution-ICP-MS combined with microsampling (diameter=300 μm) within generally 10% uncertainty for trace elements, except for those elements distributed heterogeneously in the samples. The results show that major and trace elements of hydrous silicate minerals can be accurately analyzed by LA-ICP-MS without applying internal standardization when using MPI-DING and USGS reference glasses as multiple reference materials for calibration.
|Translated title of the contribution||In situ analysis of major and trace element compositions of hydrous silicate minerals by LA-ICP-MS|
|Number of pages||12|
|Journal||Diqiu Kexue - Zhongguo Dizhi Daxue Xuebao/Earth Science - Journal of China University of Geosciences|
|Publication status||Published - 2014|
- Accurate analysis
- Hydrous silicate mineral
- Trace element