scholarly journals The sequential REE (Rare Earth Elements) extraction of weathered crusts of granitoids from Sibolga, Indonesia

2021 ◽  
Vol 882 (1) ◽  
pp. 012020
Author(s):  
I Setiawan
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Sequential Extraction ◽  
Ion Adsorption ◽  
Potential Source ◽  
Ms Analysis ◽  
Icp Ms ◽  
The Future ◽  
Placer Deposits ◽  
Mineralogical Compositions

Abstract Indonesia needs a proven technology for REE extraction to build a national REE industry. Monazite that has been recovered from placer deposits at Bangka-Belitung areas is the most potential REE source. In the future, ion adsorption type will be another potential source of REE deposits. This paper describes the sequential REE extraction of the weathered crusts of granitoids from Sibolga using sequential extraction ICP-MS analysis is applied to determine bulk samples mineralogical compositions and REE content. The total REE (∑REE) content of weathered crusts of granitoids from Sibuluhan Sihaporas A ranges from 265 to 479 ppm, while the amount of ∑REE leached by sequential extraction range from 151 to 263 ppm, and the percentage of adsorbed ∑REE ranges from 55 to 74%. In comparison, Sibuluhan Sihaporas B ranges from 302 to 634 ppm, 82 to 198 ppm, and 28 to 44%, respectively. ∑REE content of weathered granitoids crusts from Sarudik ranges from 135 to 219 ppm, while that SREE leached by sequential extraction range from 21 to 82 ppm, and percentage of adsorbed ∑REE range from 11 to 50 %, while that Sibolga Julu ranges from 191 to 304 ppm, 111 to 138 ppm, and 27 to 44%.

Calcium alginate microparticles for rare earth elements preconcentration prior to ICP-MS measurements in fresh water

2018 ◽  
Vol 10 (35) ◽  
pp. 4242-4250 ◽  
Author(s):  
Gabriel G. Arantes de Carvalho ◽  
Denise F. S. Petri ◽  
Pedro V. Oliveira
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Fresh Water ◽  
Calcium Alginate ◽  
Fresh Waters ◽  
Ms Analysis ◽  
Icp Ms

Calcium alginate microparticles were used for the preconcentration of rare earth elements for ICP-MS analysis of fresh waters.

Speciation of rare earth elements in soil by sequential extraction then HPLC coupled with visible and ICP-MS detection

2001 ◽  
Vol 370 (8) ◽  
pp. 1041-1047 ◽  
Author(s):  
Qiuquan Wang ◽  
B. Huang ◽  
Zhenwei Guan ◽  
Limin Yang ◽  
Bin Li
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Sequential Extraction ◽  
Ms Detection ◽  
Icp Ms

scholarly journals Determination of Rare Earth Elements in Plant Samples by ICP-MS with Microwave Digestion

2021 ◽  
Vol 14 (4) ◽  
pp. 515-526
Author(s):  
Anna A. Kravchenko ◽  
◽  
Irina V. Nikolaeva ◽  
Stanislav V. Palesskiy
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Certified Reference Materials ◽  
Microwave Digestion ◽  
Plant Materials ◽  
Ms Analysis ◽  
Icp Ms ◽  
Relative Standard ◽  
Hf Addition

Method of microwave digestion using HNO3, HCl and HF in MARS‑5 system followed by ICP-MS analysis is proposed for determination of rare earth elements (REE) in plant materials. Limits of detection are 0.0001–0.001 ppm and allow for determination of all REE in certified reference materials Tr‑1, LB‑1 and EK‑1 and new reference material NSP‑1, relative standard deviations are lower than 13 %.Influence of HF addition during microwave digestion in UltraWAVE system on the ICP-MS analysis of REE in plant materials depending on silica content is studied. Necessity of HF addition during microwave digestion for better REE recoveries is shown for plant materials with Si contents exceeding 0.1 %

scholarly journals Online preconcentration ICP-MS analysis of rare earth elements in seawater

2012 ◽  
Vol 13 (1) ◽  
pp. n/a-n/a ◽  
Author(s):  
Ed C. Hathorne ◽  
Brian Haley ◽  
Torben Stichel ◽  
Patricia Grasse ◽  
Moritz Zieringer ◽  
...  
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Online Preconcentration ◽  
Ms Analysis ◽  
Icp Ms

LA-ICP-MS analysis of trace and rare earth elements in carbonate fracture fillings from Granitoid Rocks (Sweden)

2021 ◽  
Author(s):  
Annemie Kusturica ◽  
Neele van Laaten ◽  
Henrik Drake ◽  
Thorsten Schäfer
Keyword(s):  
Rare Earth ◽  
Rare Earth Elements ◽  
Ms Analysis ◽  
Icp Ms ◽  
Granitoid Rocks

scholarly journals Gem-Quality Zircon Megacrysts from Placer Deposits in the Central Highlands, Vietnam—Potential Source and Links to Cenozoic Alkali Basalts

Minerals ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 89 ◽  
Author(s):  
Vuong Bui Thi Sinh ◽  
Yasuhito Osanai ◽  
Christoph Lenz ◽  
Nobuhiko Nakano ◽  
Tatsuro Adachi ◽  
...  
Keyword(s):  
Rare Earth ◽  
Alkali Basalt ◽  
Earth Element ◽  
Alkali Basalts ◽  
Potential Source ◽  
Icp Ms ◽  
Close Proximity ◽  
Placer Deposits ◽  
Central Highlands ◽  
Lithospheric Mantle Source

Gem-quality zircon megacrysts occur in placer deposits in the Central Highlands, Vietnam, and have euhedral to anhedral crystal shapes with dimensions of ~3 cm in length. These zircons have primary inclusions of calcite, olivine, and corundum. Secondary quartz, baddeleyite, hematite, and CO2 fluid inclusions were found in close proximity to cracks and tubular channels. LA-ICP-MS U-Pb ages of analyzed zircon samples yielded two age populations of ca. 1.0 Ma and ca. 6.5 Ma, that were consistent with the ages of alkali basalt eruptions in the Central Highlands at Buon Ma Thuot (5.80–1.67 Ma), Pleiku (4.30–0.80 Ma), and Xuan Loc (0.83–0.44 Ma). The zircon geochemical signatures and primary inclusions suggested a genesis from carbonatite-dominant melts as a result of partial melting of a metasomatized lithospheric mantle source, but not from the host alkali basalt. Chondrite-normalized rare earth element patterns showed a pronounced positive Ce, but negligible Eu anomalies. Detailed hyperspectral Dy3+ photoluminescence images of zircon megacrysts revealed resorption and re-growth processes.

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