Multielemental Determination of As, Bi, Ge, Sb, and Sn in Agricultural Samples Using Hydride Generation Coupled to Microwave-Induced Plasma Optical Emission Spectrometry

Autor(es)

Machado, Raquel C. ; Amaral, Clarice D. B. ; Nobrega, Joaquim A. ; Araujo Nogueira, Ana Rita

• Tipo de documento: Artigo Científico
• Fonte: Journal of Agricultural and Food Chemistry; v. 65, n. 23, p. 4839-4842, JUN 14 2017.
• Citações Web of Science: 7

Resumo

A microwave-induced plasma optical emission spectrometer with N-2-based plasma was combined with a multimode sample introduction system (MSIS) for hydride generation (HG) and Multielemental determination of As, Bi, Ge, 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 mu 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. (AU)

• Processo FAPESP: 13/26672-5 - Desenvolvimento de procedimentos para a determinação de As, Ba, Cd, Cr, Pb e Si em amostras de fertilizantes minerais por espectrometria de emissão óptica com plasma induzido por micro-ondas (MIP OES)
• Beneficiário: Raquel Cardoso Machado
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 15/14488-0 - Desenvolvimento de métodos analíticos para a determinação da qualidade de fertilizantes e resíduos de curtumes
• Beneficiário: Ana Rita de Araujo Nogueira
• Modalidade de apoio: Auxílio à Pesquisa - Regular