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Title: Preliminary Study for the Determination of Rare Earth Elements Using the ICP-MS Technique
Authors: Catrina, Gina Alina 
Vasile, Gabriela 
Cristea, Ionut 
Cernica, Georgiana 
Covaliu, Cristina Ileana 
Pascu, Luoana Florentina 
Keywords: ICP-MS;Optimized method;Rare earth metals;Soil
Issue Date: Apr-2020
Publisher: Revista de Chimie
This paper proposes an optimized method for the determination of rare earth elements (Sc, Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu) from soils using ICP-MS technique. First, the soil samples were thermal treated at three different temperatures 550ºC, 700ºC and 8500C in order to eliminate organic matter interferences. Then, the residual samples remaining from the calcination process were extracted in acidic medium with two different digestion methods (method I - a mixture of nitric acid and hydrogen peroxide; method II - aqua regia mixture) in order to quantify rare earth elements content. The highest recovery percentages for the major rare earth elements analyzed (Sc, Y, La, Ce, Pr, Nd. Sm) were situated in the range 86.13% to 99.90%, in sample residues thermally treated at 700°C and extracted with nitric acid and hydrogen peroxide.
Revista de Chimie, 71(4), 2020, pp. 277-288
ISSN: 2668-8212
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