Simultaneous Measurement of Major, Trace Elements and Pb Isotopes in Silicate Glasses by Laser Ablation Quadrupole and Multi-Collector Inductively Coupled Plasma Mass Spectrometry

A method was developed for the rapid in situ analysis of major and trace elements and Pb isotopes in silicate glass samples that combines laser ablation quadrupole and multi-collector inductively coupled plasma mass spectrometry（LA-Q-ICP-MS/MC-ICP-MS）. Major, trace elements, and Pb isotope ratio com...

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Bibliographic Details
Published in:Journal of earth science (Wuhan, China) China), 2017-02, Vol.28 (1), p.92-102
Main Authors: Dai, Mengning, Bao, Zhi’an, Chen, Kaiyun, Zong, Chunlei, Yuan, Honglin
Format: Article
Language:English
Subjects:
Biogeosciences
Earth and Environmental Science
Earth science
Earth Sciences
Experimental Geochemistry
Geochemistry
Geology
Geotechnical Engineering & Applied Earth Sciences
Glass
Inductively coupled plasma
Isotopes
Laser ablation
Lasers
Mass spectrometry
Measurement techniques
Silica
Silicates
Trace elements
同时测定
四极杆
多组分
微量元素含量
激光烧蚀
电感耦合等离子体质谱法
硅酸盐玻璃
铅同位素组成
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Summary:A method was developed for the rapid in situ analysis of major and trace elements and Pb isotopes in silicate glass samples that combines laser ablation quadrupole and multi-collector inductively coupled plasma mass spectrometry（LA-Q-ICP-MS/MC-ICP-MS）. Major, trace elements, and Pb isotope ratio compositions were clearly affected by laser conditions. Using a laser spot size of 160 μm, a laser ablation frequency of 15 Hz, an energy density 18 J/cm~2, and a 1 ： 9 ratio of laser ablation aerosol to the corresponding makeup gas, we obtained accurate major and trace element contents and Pb isotope ratios. Using Ca as the internal standard element, and GSE-1G and NIST 610 as the external standards for calibration, element contents generally matched the preferred values within 15%. Higher relative errors for some elements（e.g., Cr, Ga, Ge） may have been caused by lower than recommended values in some standards. The exponential law correction method for Tl normalization, with optimum adjusted Tl ratio, was utilized to obtain Pb isotopic data with good precision and accuracy. Pb isotopic ratios of the glass reference materials were in good agreement with the reference or published values to within 2 s measurement uncertainties, and the analytical precision was better than 0.17%（e.g., ~（208）Pb/~（206）Pb）. The developed method is a simple, reliable, and accurate technique for determining major, trace elements, and Pb isotope compositions of silicate glasses and minerals within a single ablation event.
ISSN:1674-487X
1867-111X
DOI:10.1007/s12583-017-0742-8