Assessing rare earth elements in quartz rich geological samples

Anna, Santoro; Thoss, Vera; Guevara, Sergio Ribeiro; Urgast, Dagmar S.; Raab, Andrea; Mastrolitti, Silvio; Feldmann, Jörg

doi:10.1016/j.apradiso.2015.10.035

Cited by 12 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Out of the non -1/v nuclides, 152 Eu, 152m Eu, 169 Yb, and 177 Lu showed the farthest digression, and for that matter, these are analyzed with the k0-NAA. The extended Hoghdal convention, which initiates newly computed values of Q0, serves as the basis for the reactor moderator type and neutron temperature [6,20]. The values of these are employed in co-occurrence with the nuclide-specific Westcott factor [g(Tn)] [6,14].…”

Section: K0-methods Of Standardizationmentioning

confidence: 99%

“…The NI of REEs is produced predominantly from uranium-235 fission which yields light REEs. It is essential to be corrected because these interferences serve as a source of vital errors for uranium samples with content levels higher than 25 mg/kg, especially for metals with radionuclides that are products of fission reaction as lanthanum-140, cerium-141, cerium-143, and neodymium-147, respectively [6,20]. That is to say it depends on the U/REE ratio.…”

Section: Nuclear Interferences (Ni)mentioning

confidence: 99%

“…Gamma-ray self-attenuation can be explained as γ-ray emitted within the sample that is absorbed or scattered when the sample crosses on its way to the detector [20]. The γ-ray self-attenuation effect initiates errors, specifically gamma-rays with low energy in samples abundant in heavy metals.…”

Section: Gamma-ray Self-attenuation Effectmentioning

confidence: 99%

“…The data was fetched from the k0 official database as cited in Whitty-Leveille et al [24]. At the same time, the Q0 values for europium-152, europium-152m, ytterbium-169, and lutetium-177 [20] and k0 and Q0 for thulium-170 was adapted from Abdollahi Neisiani et al and Zawisza et al [6,25].…”

Section: Gharr-1 Activation Analysis Libraries and Sensitivity Factorsmentioning

confidence: 99%

See 3 more Smart Citations

Validation of k0-Standardization Procedure of Instrumental Neutron Activation Analysis at Ghana Research Reactor-1 Facility for the Determination of Rare Earth Elements

Asare

Klutse

Acquaye

2022

Arab Journal of Nuclear Sciences and Applications

View full text Add to dashboard Cite

The current approach for accurate determination for rare earth elements using environmental reference materials for k0-INAA with short turnaround analysis times was investigated. The k0 and Q0 values for REEs, nuclear interference, and spectral interference were practically assessed and improved with the standard reference material. The evaluation of the current iterative neutron self-shielding and gamma-ray self-attenuation was established using reference material prepared from 100 mg/kg of 99.9% certified reference material (i.e., Alfa Aesar mono rare earth oxide combined with SiO2). The general achievement of the current k0-INAA technique for rare earth elements was validated with IAEA Soil-7 reference material and real sediment samples. The rare earth elements levels in the reference material range from 0.72 ± 0.08 mg/kg for 166 Ho to 60.8 ± 2.1 mg/kg for 141 Ce. The uncertainty at which the rare earth element concentration was examined is below 8% (at 95% confidence level). This showed good uniformity with the IAEA Soil-7 certified contents. In addition, k0-NAA is able to quantify most of the REEs in real samples collected from three locations in Ghana.

show abstract

Section: K0-methods Of Standardizationmentioning

confidence: 99%

Section: Nuclear Interferences (Ni)mentioning

confidence: 99%

Section: Gamma-ray Self-attenuation Effectmentioning

confidence: 99%

Section: Gharr-1 Activation Analysis Libraries and Sensitivity Factorsmentioning

confidence: 99%

See 2 more Smart Citations

Validation of k0-Standardization Procedure of Instrumental Neutron Activation Analysis at Ghana Research Reactor-1 Facility for the Determination of Rare Earth Elements

Asare

Klutse

Acquaye

2022

Arab Journal of Nuclear Sciences and Applications

View full text Add to dashboard Cite

show abstract

“…REEs (mainly La, Eu, Gd, Tb and Yb) extracted from mines are also employed in hightechnology applications, such as fluorescent lamps, radar screens and plasma displays as well as in auto exhaust absorption catalysts and high technology glasses [3]. Their determination in geological samples is therefore important for a number of scientific and commercial applications [4]. The chemical similarity of REEs, combined with their generally low amount and their presence as mixtures of rare earth minerals, makes their determination challenging and dependant on the extraction method and instrumental techniques used [5].…”

Section: Introductionmentioning

confidence: 99%

Rare Earth Elements- A Review

Mehmood¹

2018

JENR

View full text Add to dashboard Cite

This article presents a description of Rare-earth elements (REE) which are a collection of seventeen metals that have distinctive and varied chemical, magnetic, and luminescent properties that make them strategically important in a number of high-technology industries. Consequently, the REE are increasingly becoming more attractive commodity targets for the mineral industry. This paper presents a comprehensive review of the distribution, geological characteristics and resources of Australia's major REE deposits. REE are generally associated with igneous, sedimentary, and metamorphic rocks in a wide range of geological environments. Elevated concentrations of these elements have been documented in various heavy-mineral sand deposits (beach, dune, marine tidal, and channel), carbonatite intrusions, (per)alkaline igneous rocks, iron-oxide breccia complexes, calc-silicate rocks (skarns), fluorapatite veins, pegmatites, phosphorites, fluviatile sandstones, unconformity-related uranium deposits, and lignites. The dissemination and deliberation of REE in these deposits are influenced by various rock-forming processes including enrichment in magmatic or hydrothermal fluids, separation into mineral species and precipitation, and subsequent redistribution and concentration through weathering and other surface processes. The lanthanide series of REE (lanthanum to lutetium) and yttrium show a close genetic and three-dimensional association with alkaline felsic igneous rocks, however, scandium in laterite profiles has a closer empathy with ultramafic/mafic igneous rocks. The highest level of the cataloguing comprises four general 'mineral-system association' categories, regolith, basinal, metamorphic, and magmatic, which in turn contain sixteen 'deposit type' members, namely: regolith-carbonatite-associated; ultramafic/mafic rock-associated; basinal-heavy mineral sand deposits in beach, high dune, offshore shallow marine tidal, and tidal environments; phosphorite; lignite; unconformity-related; metamorphic-calc-silicate; and magmatic-(per)alkaline rocks; carbonatite; pegmatite; skarn; apatite and/or fluorite veins; and iron-oxide breccia complex.

show abstract

Interrelation of EDXRF and comparator INAA to analyze REE mineral resources

Silachyov

2024

J Radioanal Nucl Chem

View full text Add to dashboard Cite

Assessing rare earth elements in quartz rich geological samples

Cited by 12 publications

References 17 publications

Validation of k0-Standardization Procedure of Instrumental Neutron Activation Analysis at Ghana Research Reactor-1 Facility for the Determination of Rare Earth Elements

Validation of k0-Standardization Procedure of Instrumental Neutron Activation Analysis at Ghana Research Reactor-1 Facility for the Determination of Rare Earth Elements

Rare Earth Elements- A Review

Interrelation of EDXRF and comparator INAA to analyze REE mineral resources

Contact Info

Product

Resources

About