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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Virgilio, Alex [1] ; Amais, Renata S. [2] ; Schiavo, Daniela [3] ; Nobrega, Joaquim A. [1]
Total Authors: 4
Affiliation:
[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
Total Affiliations: 3
Document type: Journal article
Source: ENERGY & FUELS; v. 29, n. 7, p. 4339-4344, JUL 2015.
Web of Science Citations: 11
Abstract

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)

FAPESP's process: 14/18393-1 - Evaluation of gradient flow analysis as calibration strategy for spectroanalytical techniques with plasma source
Grantee:Alex Virgilio
Support Opportunities: Scholarships in Brazil - Post-Doctoral
FAPESP's process: 13/26857-5 - Total concentrations and chemical speciation of As, Cr and Se using low pressure monolithic columns and inductively coupled plasma techniques
Grantee:Renata Stábile Amais
Support Opportunities: Scholarships in Brazil - Post-Doctoral