Evaluation of Inductively Coupled Plasma Tandem Mass Spectrometry for Determination of As in Agricultural Inputs with High REE Contents

Autor(es)

Raquel C. Machado ; Alex Virgilio ^[2] ; Clarice D. B. Amaral ; Daniela Schiavo ^[4] ; Joaquim A. Nóbrega ^[5] ; Ana Rita A. Nogueira ^[6]

• Tipo de documento: Artigo Científico
• Fonte: Journal of the Brazilian Chemical Society; v. 27, n. 11, p. 2076-2081, 2016-11-00.

Resumo

In the present work, an inductively coupled plasma-tandem mass spectrometer (ICP-MS/MS) operating in single quadrupole and mass shift modes were evaluated for As determination in mineral fertilizers and agricultural gypsum with high contents of rare earth elements. For MS/MS mode, oxygen was the gas introduced into the octopole reaction system (ORS3). Samples were prepared by microwave-assisted digestion with diluted nitric acid solution. The accuracy was checked by analysis of a fertilizer certified reference material (NIST SRM 695) and by addition and recovery experiments. When operating in single quadrupole mode, recoveries ranged from 59 to 151%; while values obtained by MS/MS mode varied from 81 to 105% when 0.30 mL min-1 O2 was introduced into the ORS3. Limits of detection for As+ in single quadrupole and AsO+ in MS/MS mass shift mode were 6 and 9 ng L-1, respectively. (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: 14/18393-1 - Avaliação da análise em fluxo por gradiente como estratégia de calibração para técnicas espectroanalíticas com fonte de plasma
• Beneficiário: Alex Virgilio
• Modalidade de apoio: Bolsas no Brasil - Pós-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