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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.)

Performance evaluation of collision-reaction interface and internal standardization in quadrupole ICP-MS measurements

Full text
Author(s):
Salazar, Rodrigo F. S. [1] ; Guerra, Marcelo B. B. [1] ; Pereira-Filho, Edenir R. [1] ; 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
Total Affiliations: 1
Document type: Journal article
Source: Talanta; v. 86, p. 241-247, OCT 30 2011.
Web of Science Citations: 16
Abstract

The combined use of internal standardization with collision and reaction interface in an inductively coupled plasma quadrupole mass spectrometer (ICP-QMS-CRI) was evaluated. The behavior of several elements (Ba, Cd, Co, Cr, Cu, Li, Mn, Mo, Pb, Sb, V and Zn) was studied by introducing H(2) or He through the skimmer and sampler cones of the CRI device and by using In. Rh and Sc as internal standards. Certified reference material of trace elements in water (NIST 1643e) was used to evaluate the performance of the method. A vinegar sample and mixed food diet standard reference material were directly introduced into the equipment as complex matrices for Cr and V determinations. Improvements in accuracy and precision were attained combining both strategies. The introduction of H(2) through the skimmer cone was the best way to overcome polyatomic ions formation and to improve SBR and BEC values for several elements. The use of Sc as internal standard improved the performance of ICP-QMS-CRI. (C) 2011 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 08/08260-3 - Chemical analyses of environmental samples from Antartica: spectrometric determination of Cd, Cr, Ni and Pb, use of micro X-Ray fluorescence with synchrotron radiation and application of chemometric tools
Grantee:Marcelo Braga Bueno Guerra
Support Opportunities: Scholarships in Brazil - Doctorate (Direct)
FAPESP's process: 06/59083-9 - Inductively coupled plasma mass spectrometry: fundamentals and applications
Grantee:Joaquim de Araújo Nóbrega
Support Opportunities: Research Projects - Thematic Grants