Abstract Details
(2020) Precise and Accurate Determination of 54 Major, Minor and Trace Elements in Silicates Using a Standard Single LA-ICP-QMS
Chen Z & Langmuir C
https://doi.org/10.46427/gold2020.407
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06d: Room 2, Thursday 25th June 06:12 - 06:15
Zhongxing Chen
View abstracts at 3 conferences in series
Charles Langmuir View all 5 abstracts at Goldschmidt2020 View abstracts at 7 conferences in series
Charles Langmuir View all 5 abstracts at Goldschmidt2020 View abstracts at 7 conferences in series
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Submitted by Charles Magee on Thursday 25th June 04:13
How do you propagate the uncertainties from these mathematical corrections?
Dear Dr. Magee Charles, Thank you and Dr. Norris for organizing the section. You asked a very very good question. Error propagation is always the concern for analytical chemists. Since we do the mathematical corrections for elemental fractionation in two steps (short- and long-term fractionation). It is possible both steps can contribute the uncertainty. We calculated the uncertainty for final analytical results. We measured six micro-analytical geological glass reference materials with a wide variety of silicate matrices from NIST 612, rhyolite to komatiite eight times. The RSD is less than 2% for major and minor elements, and less than 2% and 5% for the trace elements with concentrations higher than 5 ppm and 1 ppm respectively.
How do you propagate the uncertainties from these mathematical corrections?
Dear Dr. Magee Charles, Thank you and Dr. Norris for organizing the section. You asked a very very good question. Error propagation is always the concern for analytical chemists. Since we do the mathematical corrections for elemental fractionation in two steps (short- and long-term fractionation). It is possible both steps can contribute the uncertainty. We calculated the uncertainty for final analytical results. We measured six micro-analytical geological glass reference materials with a wide variety of silicate matrices from NIST 612, rhyolite to komatiite eight times. The RSD is less than 2% for major and minor elements, and less than 2% and 5% for the trace elements with concentrations higher than 5 ppm and 1 ppm respectively.
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