Dilute-and-Shoot Procedure for Determination of As, Cr, P, Pb, Si, and V in Ethanol Fuel by Inductively Coupled Plasma Tandem Mass Spectrometry

Autor(es)

Virgilio, Alex ^[1] ; Amais, Renata S. ^[2] ; Schiavo, Daniela ^[3] ; Nobrega, Joaquim A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Fed Sao Carlos, Dept Chem, Grp Appl Instrumental Anal, BR-13565905 Sao Carlos, SP - Brazil

^[2] Univ Sao Paulo, Ctr Nucl Energy Agr, BR-13416000 Sao Paulo - Brazil

^[3] Agilent Technol Brazil, BR-06460040 Sao Paulo - Brazil

• Tipo de documento: Artigo Científico
• Fonte: ENERGY & FUELS; v. 29, n. 7, p. 4339-4344, JUL 2015.
• Citações Web of Science: 11

Resumo

A method for determination of As, Cr, P, Pb, Si, and V in ethanol fuel by inductively coupled plasma tandem mass spectrometry (ICP-MS/MS) is described. Samples were simply diluted in 1% (v/v) HNO3, and a matrix-matching strategy was used for calibration. The analytical performance of ICP-MS/MS operated in both single quadrupole and tandem mass spectrometry (MS/MS) mode with and without introducing oxygen into the octopole reaction system (ORS3) was evaluated. Addition and recovery experiments in ethanol fuel samples for determination of As, Cr, P, Pb, Si, and V were carried out to investigate the accuracy of the method, and recoveries ranged from 84 to 109% for all analytes by mass shift mode. Accuracy for Cr, P, and Si determinations was only achieved by monitoring their oxide ions by MS/MS mode, and in the case of Si determination, its dioxide ion ((SiO2+)-Si-28-O-16) was monitored with the ORS3 pressurized with 0.3 mL min(-1) oxygen gas. The combination of MS/MS and mass shift modes allowed for the successful determination of all target analytes. (AU)

• Processo FAPESP: 13/26857-5 - Teores totais e análise de especiação química de As, Cr e Se usando colunas monolíticas a baixa pressão e técnicas com plasma acoplado indutivamente
• Beneficiário: Renata Stábile Amais
• Linha de fomento: Bolsas no Brasil - Pós-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
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado