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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.)

Critical evaluation of internal standardization in ICP tandem mass spectrometry and feasibility of the oxygen reaction for boron determination in plants

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Author(s):
Amaral, Clarice D. B. [1, 2] ; Machado, Raquel C. [1, 2] ; Virgilio, Alex [2] ; Schiavo, Daniela [3] ; Nogueira, Ana Rita A. [1, 2] ; Nobrega, Joaquim A. [2]
Total Authors: 6
Affiliation:
[1] Embrapa Pecuaria Sudeste, Sao Carlos, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem, Grp Appl Instrumental Anal, POB 676, BR-13560970 Sao Carlos, SP - Brazil
[3] Agilent Technol, Sao Paulo, SP - Brazil
Total Affiliations: 3
Document type: Journal article
Source: Journal of Analytical Atomic Spectrometry; v. 31, n. 6, p. 1179-1184, JUN 2016.
Web of Science Citations: 6
Abstract

The feasibility of internal standardization and the oxygen reaction in ICP-MS was studied for accurate determination of boron. Lithium, Be and Rh were systematically evaluated as internal standards (IS.) for B determination in plants by ICP-MS/MS using a single quadrupole mode and MS/MS mode with O-2 into a cell, where B and internal standard signal intensities were processed either after both or only one of them reacted. Carbon is a source of spectral and matrix interferences in B determination by ICP-MS. The use of instrumental strategies such as tandem mass spectrometry (MS/MS) concomitantly with internal standardization demands further investigation about the I.S. behaviour regarding the gas phase reaction with oxygen. The behaviours of B and Be, as well as their oxides, were quite similar in an octopole reaction system containing O-2. The coexistence of spectral and non-spectral interferences was evidenced by increasing carbon concentrations in samples and checking positive errors caused for B-11(+). Recoveries for B determination in plant certified reference materials without I.S. ranged from 98 to 145% and with Be as an internal standard ranged from 98 to 108%. Beryllium presented favourable characteristics as an internal standard for B due to its mass closeness, similar ionization energy, and reactivity with oxygen. (AU)

FAPESP's process: 13/26672-5 - Development of procedures to As, Ba, Cd, Cr, Pb and Si determination in fertilizer samples by using microwave inductive plasma optical emission spectrometry (MIP OES)
Grantee:Raquel Cardoso Machado
Support Opportunities: Scholarships in Brazil - Doctorate
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: 15/14488-0 - Analytical method development for quality determination of fertilizers and tanning waste
Grantee:Ana Rita de Araujo Nogueira
Support Opportunities: Regular Research Grants