Data/hora: 23/09/2024 19:50:24

Biblioteca(s): 	Embrapa Pecuária Sudeste.	
Data corrente: 	13/11/2017	
Data da última atualização: 	13/11/2017	
Autoria: 	AMARAL, C. D. B. do; MACHADO, R. C.; BARROS, J. A. V. de A.; VIRGILIO, A.; SCHIAVO, D.; NOGUEIRA, A. R. de A.; NOBREGA, J. de A.	
Afiliação: 	Clarice Dias Britto do Amaral, UFSCar; Raquel Cardoso Machado, UFSCar; Juan Antônio Vázquez de Almeida Barros, Agilent Technologies; Alex Virgilio, UFSCar; Daniela Schiavo, UFSCar; ANA RITA DE ARAUJO NOGUEIRA, CPPSE; Joaquim de Araújo Nóbrega, UFSCar.	
Título: 	Determination of rare earth elements in geological and agricultural samples by ICP-OES.	
Ano de publicação: 	2017	
Fonte/Imprenta: 	Espectroscopy, v. 32, n. 10, p. 2-6, 2017.	
Idioma: 	Inglês	
Conteúdo: 	The selection of an analytical method featuring multielemental capability, wide linear range, and that stands for an elevated content of total dissolved solids (TDS) would be ideal for rare earth elements (REEs) 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.	
Palavras-Chave: 	Geological material; Spectrometry.	
Thesaurus Nal: 	rare earth elements.	
Categoria do assunto: 	X Pesquisa, Tecnologia e Engenharia	
Registro original: 	Embrapa Pecuária Sudeste (CPPSE)	
Exemplares: 	CPPSE - (24161-1) - UPC - AM - DD - PROCI-2017.00086 - AMA - 2017.00227 - DIS