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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Determination of Rare Earth Elements in Geological and Agricultural Samples by ICP-OES

Author(s):
Amaral, Clarice D. B. [1, 2] ; Machado, Raquel C. [1, 2] ; Barros, Juan A. V. A. [2] ; Virgilio, Alex [2] ; Schiavo, Daniela [3] ; Nogueira, Ana Rita A. [1] ; Nobrega, Joaquim A. [2]
Total Authors: 7
Affiliation:
[1] Embrapa Pecuaria Sudeste, Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem, Grp Appl Instrumental Anal, Sao Carlos, SP - Brazil
[3] Agilent Technol, Barueri - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Spectroscopy; v. 32, n. 10, p. 32-36, OCT 2017.
Web of Science Citations: 3
Abstract

The selection of an analytical method featuring multielemental capability, wide linear range, and ease of operation would be ideal for rare earth element (REE) determination in complex samples. This work targets the determination of Ce, Dy, Er, Eu, Gd, Ho, La, Lu, Nd, Pr, Sc, Sm, Tb, Th, Tm, Y, and Yb in geological samples, fertilizer, and agricultural gypsum samples using inductively coupled plasma optical emission spectrometry (ICP-OES). Samples were prepared using microwave assisted acid digestion and the accuracy was evaluated by addition and recovery experiments for spiked samples at three concentration levels. A careful choice of the plasma viewing position and appropriate dilution factors led to accurate and sensitive determinations of REEs. The proposed procedure using external calibration presented good accuracy and sensitivity. (AU)

FAPESP's process: 14/18393-1 - Evaluation of gradient flow analysis as calibration strategy for spectroanalytical techniques with plasma source
Grantee:Alex Virgilio
Support type: Scholarships in Brazil - Post-Doctorate
FAPESP's process: 13/26672-5 - Development of procedures to as, BA, CD, Cr, Pb and Si determination in fertilizer samples by using microwave inductive plasma optical emission spectrometry (MIP OES)
Grantee:Raquel Cardoso Machado
Support type: Scholarships in Brazil - Doctorate
FAPESP's process: 15/14488-0 - Analytical method development for quality determination of fertilizers and tanning waste
Grantee:Ana Rita de Araujo Nogueira
Support type: Regular Research Grants