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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.)

Bismuth as a general internal standard for lead in atomic absorption spectrometry

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Author(s):
Bechlin, Marcos A. [1] ; Fortunato, Felipe M. [1] ; Ferreira, Edilene C. [1] ; Gomes Neto, Jose A. [1] ; Nobrega, Joaquim A. [2] ; Donati, George L. [3] ; Jones, Bradley T. [3]
Total Authors: 7
Affiliation:
[1] Sao Paulo State Univ, UNESP, Dept Analyt Chem, BR-14801970 Araraquara, SP - Brazil
[2] Univ Fed Sao Carlos, Dept Chem, BR-13565905 Sao Carlos, SP - Brazil
[3] Wake Forest Univ, Dept Chem, Winston Salem, NC 27106 - USA
Total Affiliations: 3
Document type: Journal article
Source: Analytica Chimica Acta; v. 831, p. 24-30, JUN 11 2014.
Web of Science Citations: 10
Abstract

Bismuth was evaluated as internal standard for Pb determination by line source flame atomic absorption spectrometry (LS FAAS), high-resolution continuum source flame atomic absorption spectrometry (HR-CS FAAS) and line source graphite furnace atomic absorption spectrometry (LS GFAAS). Analysis of samples containing different matrices indicated close relationship between Pb and Bi absorbances. Correlation coefficients of calibration curves built up by plotting A(Pb)/A(Bi) versus Pb concentration were higher than 0.9953 (FAAS) and higher than 0.9993 (GFAAS). Recoveries of Pb improved from 52-118% (without IS) to 97-109% (IS, LS FAAS); 74-231% (without IS) to 96-109% (IS, HR-CS FAAS); and 36-125% (without IS) to 96-110% (IS, LS GFAAS). The relative standard deviations (n = 12) were reduced from 0.6-9.2% (without IS) to 0.3-4.3% (IS, LS FAAS); 0.7-7.7% (without IS) to 0.1-4.0% (IS, HR-CS FAAS); and 2.1-13% (without IS) to 0.4-5.9% (IS, LS GFAAS). (C) 2014 Elsevier B.V. All rights reserved. (AU)

FAPESP's process: 12/13500-9 - Evaluation of bismuth as internal standard for lead in spectrometric techniques
Grantee:José Anchieta Gomes Neto
Support Opportunities: Regular Research Grants
FAPESP's process: 12/23323-7 - Internal standard addition method using flowing gradient concentration in spectroscopic techniques
Grantee:Felipe Manfroi Fortunato
Support Opportunities: Scholarships in Brazil - Doctorate