High-precision EPMA measurement of trace elements in ilmenite and reference material development

Abstract

Ilmenite occurs as a common accessory mineral in igneous and metamorphic rocks and is a major constituent in lunar basaltic rocks. The distributions and concentrations of major and trace elements...

Four Natural Chromite Reference Materials for the Determination of the First‐Row Transition Elements and Gallium by LA‐ICP‐MS

“…Chromite sample LBS13‐04 has a mean composition of 10.6% m/m for Al 2 O 3 , 59.9% m/m for Cr 2 O 3 , 14.1% m/m for FeO and 14.3% m/m for MgO (Jia et al . 2022). Its Cr# ([Cr]/([Cr] + [Al]) × 100) value is 78.5 on average.…”

“…Natural minerals and synthetic oxides were used for calibration as follows: MgO (Mg), Cr 2 O 3 (Cr), FeS 2 (Fe). The counting time was 10 s for Al, Mg and Fe, and 20 s for Cr (Jia et al 2022).…”

Atomic spectrometry update – a review of advances in environmental analysis

“…Other techniques. Improved methods for the EPMA determination of element compositions in a variety of geological materials included 249 the elemental analysis of ilmenite for which there is a lack of RMs. Having characterised a natural ilmenite (PZH12-09) as a potential RM, a high-precision EPMA method for the determination of trace elements at the <100 mg g −1 level was developed.…”

Analysis of geological glasses by electron probe microanalysis under low beam current density conditions

“…, 20 kV). 36,40–43 Large-area total focusing type crystals (with intensity 2–5 times higher than that of conventional crystals) or the aggregate counting strategy (two or more spectrometers used for simultaneous peak counting of only one element) 36,38,43 can also be adopted, but these solutions are often limited by lack of such expensive crystals in routine instrument configuration and/or lack of aggregate intensity counting capacities for some combinations of microprobe hardware and software ( e.g. , JEOL and SHIMADZU EPMA).…”