Determination of chromium, molybdenum and vanadium dopants in bismuth tellurite optical crystals by multi-element graphite furnace atomic absorption spectrometry

László Bencs, Ottó Szakács, T. Kántor, Imre Varga, Gábor Bozsai

Research output: Contribution to journalArticle

24 Citations (Scopus)

Abstract

The graphite furnace atomic absorption spectrometry (GFAAS) method were developed for the determination of chromium, molybdenum and vanadium dopants in a bismuth tellurite (Bi2TeO5) matrix, using a transversely heated graphite atomizer with longitudinal Zeeman background correction system. The bismuth tellurite matrix dissolved in HCl and modified by the addition of triammonium citrate (TAC) was found to be significantly more volatile than the analytes considered in the present analysis. Therefore, the matrix constituents could be removed by a selective vaporization during the pyrolysis step. By applying multiple sample dispension (5 × 20 μl) and pre-vaporization of the matrix, the calibration could be performed using simple, matrix-free standard solutions. Under mini-flow conditions (50 cm3 min-1), the simultaneous GFAAS determinations of Cr, Mo and V in Bi2TeO5 crystals (single injection) are characterized by the limit of detection (LOD) values of 0.83, 3.9 and 4.7 μg l-1, respectively, whereas in the presence of the matrix, 1.14, 4.9 and 6.7 μg l-1 are found, respectively. The latter LOD data correspond to 0.18, 0.78 and 1.1 μg g-1 Cr, Mo and V, respectively, in the solid samples. The calibration curves of Cr, Mo and V are linear up to 40, 100 and 400 μg l-1, respectively. The characteristic masses are 7.5 pg Cr, 20 pg Mo and 58 pg V. For the multiple dosing and matrix pre-vaporization method, the LOD data of Cr, Mo and V are 0.16, 0.74 and 0.9 μg l-1 respectively, which correspond to 0.026, 0.12 and 0.14 μg g-1 Cr, Mo and V, respectively, in the solid samples.

Original languageEnglish
Pages (from-to)883-891
Number of pages9
JournalSpectrochimica Acta - Part B Atomic Spectroscopy
Volume55
Issue number7
Publication statusPublished - Jul 1 2000

Fingerprint

Vanadium
Atomic absorption spectrometry
Bismuth
Molybdenum
Graphite
Chromium
Vaporization
Chemical elements
vanadium
bismuth
molybdenum
furnaces
chromium
Furnaces
graphite
Doping (additives)
Crystals
matrices
Calibration
spectroscopy

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Determination of chromium, molybdenum and vanadium dopants in bismuth tellurite optical crystals by multi-element graphite furnace atomic absorption spectrometry. / Bencs, László; Szakács, Ottó; Kántor, T.; Varga, Imre; Bozsai, Gábor.

In: Spectrochimica Acta - Part B Atomic Spectroscopy, Vol. 55, No. 7, 01.07.2000, p. 883-891.

Research output: Contribution to journalArticle

@article{285e18057a9a4d1c8e3802d6dc7386fd,
title = "Determination of chromium, molybdenum and vanadium dopants in bismuth tellurite optical crystals by multi-element graphite furnace atomic absorption spectrometry",
abstract = "The graphite furnace atomic absorption spectrometry (GFAAS) method were developed for the determination of chromium, molybdenum and vanadium dopants in a bismuth tellurite (Bi2TeO5) matrix, using a transversely heated graphite atomizer with longitudinal Zeeman background correction system. The bismuth tellurite matrix dissolved in HCl and modified by the addition of triammonium citrate (TAC) was found to be significantly more volatile than the analytes considered in the present analysis. Therefore, the matrix constituents could be removed by a selective vaporization during the pyrolysis step. By applying multiple sample dispension (5 × 20 μl) and pre-vaporization of the matrix, the calibration could be performed using simple, matrix-free standard solutions. Under mini-flow conditions (50 cm3 min-1), the simultaneous GFAAS determinations of Cr, Mo and V in Bi2TeO5 crystals (single injection) are characterized by the limit of detection (LOD) values of 0.83, 3.9 and 4.7 μg l-1, respectively, whereas in the presence of the matrix, 1.14, 4.9 and 6.7 μg l-1 are found, respectively. The latter LOD data correspond to 0.18, 0.78 and 1.1 μg g-1 Cr, Mo and V, respectively, in the solid samples. The calibration curves of Cr, Mo and V are linear up to 40, 100 and 400 μg l-1, respectively. The characteristic masses are 7.5 pg Cr, 20 pg Mo and 58 pg V. For the multiple dosing and matrix pre-vaporization method, the LOD data of Cr, Mo and V are 0.16, 0.74 and 0.9 μg l-1 respectively, which correspond to 0.026, 0.12 and 0.14 μg g-1 Cr, Mo and V, respectively, in the solid samples.",
author = "L{\'a}szl{\'o} Bencs and Ott{\'o} Szak{\'a}cs and T. K{\'a}ntor and Imre Varga and G{\'a}bor Bozsai",
year = "2000",
month = "7",
day = "1",
language = "English",
volume = "55",
pages = "883--891",
journal = "Spectrochimica Acta, Part B: Atomic Spectroscopy",
issn = "0584-8547",
publisher = "Elsevier",
number = "7",

}

TY - JOUR

T1 - Determination of chromium, molybdenum and vanadium dopants in bismuth tellurite optical crystals by multi-element graphite furnace atomic absorption spectrometry

AU - Bencs, László

AU - Szakács, Ottó

AU - Kántor, T.

AU - Varga, Imre

AU - Bozsai, Gábor

PY - 2000/7/1

Y1 - 2000/7/1

N2 - The graphite furnace atomic absorption spectrometry (GFAAS) method were developed for the determination of chromium, molybdenum and vanadium dopants in a bismuth tellurite (Bi2TeO5) matrix, using a transversely heated graphite atomizer with longitudinal Zeeman background correction system. The bismuth tellurite matrix dissolved in HCl and modified by the addition of triammonium citrate (TAC) was found to be significantly more volatile than the analytes considered in the present analysis. Therefore, the matrix constituents could be removed by a selective vaporization during the pyrolysis step. By applying multiple sample dispension (5 × 20 μl) and pre-vaporization of the matrix, the calibration could be performed using simple, matrix-free standard solutions. Under mini-flow conditions (50 cm3 min-1), the simultaneous GFAAS determinations of Cr, Mo and V in Bi2TeO5 crystals (single injection) are characterized by the limit of detection (LOD) values of 0.83, 3.9 and 4.7 μg l-1, respectively, whereas in the presence of the matrix, 1.14, 4.9 and 6.7 μg l-1 are found, respectively. The latter LOD data correspond to 0.18, 0.78 and 1.1 μg g-1 Cr, Mo and V, respectively, in the solid samples. The calibration curves of Cr, Mo and V are linear up to 40, 100 and 400 μg l-1, respectively. The characteristic masses are 7.5 pg Cr, 20 pg Mo and 58 pg V. For the multiple dosing and matrix pre-vaporization method, the LOD data of Cr, Mo and V are 0.16, 0.74 and 0.9 μg l-1 respectively, which correspond to 0.026, 0.12 and 0.14 μg g-1 Cr, Mo and V, respectively, in the solid samples.

AB - The graphite furnace atomic absorption spectrometry (GFAAS) method were developed for the determination of chromium, molybdenum and vanadium dopants in a bismuth tellurite (Bi2TeO5) matrix, using a transversely heated graphite atomizer with longitudinal Zeeman background correction system. The bismuth tellurite matrix dissolved in HCl and modified by the addition of triammonium citrate (TAC) was found to be significantly more volatile than the analytes considered in the present analysis. Therefore, the matrix constituents could be removed by a selective vaporization during the pyrolysis step. By applying multiple sample dispension (5 × 20 μl) and pre-vaporization of the matrix, the calibration could be performed using simple, matrix-free standard solutions. Under mini-flow conditions (50 cm3 min-1), the simultaneous GFAAS determinations of Cr, Mo and V in Bi2TeO5 crystals (single injection) are characterized by the limit of detection (LOD) values of 0.83, 3.9 and 4.7 μg l-1, respectively, whereas in the presence of the matrix, 1.14, 4.9 and 6.7 μg l-1 are found, respectively. The latter LOD data correspond to 0.18, 0.78 and 1.1 μg g-1 Cr, Mo and V, respectively, in the solid samples. The calibration curves of Cr, Mo and V are linear up to 40, 100 and 400 μg l-1, respectively. The characteristic masses are 7.5 pg Cr, 20 pg Mo and 58 pg V. For the multiple dosing and matrix pre-vaporization method, the LOD data of Cr, Mo and V are 0.16, 0.74 and 0.9 μg l-1 respectively, which correspond to 0.026, 0.12 and 0.14 μg g-1 Cr, Mo and V, respectively, in the solid samples.

UR - http://www.scopus.com/inward/record.url?scp=0343391178&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0343391178&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0343391178

VL - 55

SP - 883

EP - 891

JO - Spectrochimica Acta, Part B: Atomic Spectroscopy

JF - Spectrochimica Acta, Part B: Atomic Spectroscopy

SN - 0584-8547

IS - 7

ER -