XRF analysis of chromite‐rich samples—another look at powder briquettes

Abstract

Chromite-rich samples are notoriously difficult to analyze by XRF spectrometry because of the low solubility of chromium in lithium borate fluxes. Our evaluation of the suitability to use powder briquettes of micronized samples implies that reasonable results can be obtained, but critical awareness of the questions behind the analyses and the possible shortcomings of data reduction procedures are required.

Atomic spectrometry update. X-Ray fluorescence spectrometry

“…Whilst their expression was shown to deal with homogeneous binary mixtures, it was also applicable for more realistic multi-component powder samples. Merkle et al 152 revisited the notoriously difficult problem facing analysts dealing with chromite-rich samples. The low solubility of chromium in lithium borate fluxes encourages the faint hearted to restrict their analytical methods to the use of pressed powder pellets.…”