Extractive separation of rare earth elements and their determination by inductively coupled plasma optical emission spectrometry in geological samples

Abstract

<p>A simple, rapid and effective solvent extraction separation of rare earth elements has been developed for their determination in geological samples such as rock, soil and core samples by inductively coupled plasma optical emission spectrometry.</p>

Determination of Ce and La in REE-rich ores using handheld LIBS and PLS regression

“…5 However, both techniques require complex and timeconsuming sample preparation and equipment, therefore, cannot be used for rapid analysis outside the laboratory. 6 Direct determination of REEs without sample decomposition is possible using several techniques, such as laser ablation with ICP-MS, 7,8 instrumental neutron activation analysis (INAA), 9,10 X-ray uorescence in wavelength dispersive mode (WDXRF) 11,12 and energy dispersive one (EDXRF), 12,13 laser-induced breakdown spectroscopy (LIBS), 14,15 etc. Geochemical exploration with sample sorting in situ requires the semi-quantitative determination of REEs using handheld/portable spectral systems.…”

Feasibility of laser-induced breakdown spectroscopy for determination of neodymium in magnet alloys

“…6 Although the mining sector widely exploits spectroscopic methods for quality control, most analytical methods, e.g. flame atomic absorption spectrometry (FAAS), inductively coupled plasma optical spectrometry (ICP OES), 7 and inductively coupled plasma mass spectrometry (ICP-MS), 8 typically require prior dissolution of solid samples. This step is susceptible to analytical errors and usually is time-consuming, often being incompatible with the high analytical demand of the mining sector.…”

Direct determination of lanthanides by LIBS in REE-rich ores: comparison between univariate and DoE based multivariate calibrations with respect to spectral resolution

“…6,7 However, both techniques require complex sample preparation and equipment, and therefore, cannot be used for rapid analysis outside the laboratory. 8 Instrumental neutron activation analysis (INAA) possesses the ability to directly detect trace levels of REEs in geological samples and thus used as a reference to ICP-OES/MS. 9,10 But time-consuming analysis 11 that requires a nuclear reactor is a notable drawback of INAA.…”