Data/hora: 08/06/2024 01:35:07

Biblioteca(s): | Embrapa Pecuária Sudeste.
Data corrente: | 01/09/2017
Data da última atualização: | 13/11/2017
Autoria: | MACHADO, R. C.; AMARAL, C. D. B. do; NOBREGA, J. de A.; NOGUEIRA, A. R. de A.
Afiliação: | Raquel Cardoso Machado, UFSCAR; Clarice Dias Britto do Amaral, UFPR; Joaquim de Araújo Nobrega, UFSCar; ANA RITA DE ARAUJO NOGUEIRA, CPPSE.
Título: | Multielemental determination of As, Bi, Ge, Sb, and Sn in agricultural samples using hydride generation coupled to microwave-induced plasma optical emission spectrometry.
Ano de publicação: | 2017
Fonte/Imprenta: | Journal of Agricultural and Food Chemistry, v. 65, n. 23, p. 4839-4842, 2017.
DOI: | 10.1021/acs.jafc.7b01448
Idioma: | Inglês
Conteúdo: | A microwave-induced plasma optical emission spectrometer with N2-based plasma was combined with a multimode sample introduction system (MSIS) for hydride generation (HG) and multielemental determination of As, Bi, Ge, Sb, and Sn in samples of forage, bovine liver, powdered milk, agricultural gypsum, rice, and mineral fertilizer, using a single condition of prereduction and reduction. The accuracy of the developed analytical method was evaluated using certified reference materials of water and mineral fertilizer, and recoveries ranged from 95 to 106%. Addition and recovery experiments were carried out, and the recoveries varied from 85 to 117% for all samples evaluated. The limits of detection for As, Bi, Ge, Sb, and Sn were 0.46, 0.09, 0.19, 0.46, and 5.2 &#956;g/L, respectively, for liquid samples, and 0.18, 0.04, 0.08, 0.19, and 2.1 mg/kg, respectively, for solid samples. The method proposed offers a simple, fast, multielemental, and robust alternative for successful determination of all five analytes in agricultural samples with low operational cost without compromising analytical performance.
Palavras-Chave: | Microwave-induced plasm; Nitrogen plasma; Simultaneous hydride generation.
Categoria do assunto: | X Pesquisa, Tecnologia e Engenharia
Registro original: | Embrapa Pecuária Sudeste (CPPSE)
Exemplares: | CPPSE - (24095-1) - UPC - AP - DD - PROCI-2017.00035 - MAC - 2017.00163 - DIS