Feasibility of As, Sb, Se and Te determination in coal by solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry

Alessandra S. Henn, Erico M. M. Flores, Valderi L. Dressler, Marcia F. Mesko, Joerg Feldmann, Paola A. Mello

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

In this work, a method for the determination of As, Sb, Se and Te in mineral coal was developed using solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry (SS-ETV-ICP-MS). The following operational parameters of the ETV-ICP-MS system were evaluated: the furnace temperature program, the mass of Ir used as the modifier, the oxygen flow rate (used in the pyrolysis step) and carrier and bypass gas flow rates. The possibility of using calibration with aqueous standard solutions was also investigated. Calibration using aqueous standard solutions was feasible for As, Sb and Te determination, and calibration using certified reference materials (CRMs) of coal was required for Se determination. For comparison of the results, coal samples were decomposed by microwave-assisted wet digestion to obtain reference values for As and Sb by ICP-MS and Se by collision/reaction cell technology inductively coupled plasma mass spectrometry (CRC-ICP-MS). In addition, samples were digested by microwave-induced combustion to obtain reference values for Te by ICP-MS. No statistical difference was observed between the results by SS-ETV-ICP-MS and those obtained by ICP-MS (As, Sb and Te) or CRC-ICP-MS (Se) after sample digestion. Additionally, CRMs of coal (NIST 1632b, NIST 1632c and NIST 1635) were analysed by SS-ETV-ICP-MS, and the results were in agreement with the certified values. The limit of quantification was 0.03, 0.01, 0.03 and 0.006 μg g−1 for As, Sb, Se and Te, respectively. These values were lower than those obtained by other methods and allowed the determination of analytes at trace and ultra-trace levels. The SS-ETV-ICP-MS method for coal presented other advantages, such as minimization of the sample preparation step, minimization of the use of large amounts of reagents and suitability of accurate determination of those analytes commonly susceptible to limitations using conventional methods.
Original languageEnglish
Pages (from-to)1384-1393
Number of pages10
JournalJournal of Analytical Atomic Spectrometry
Volume33
Issue number8
Early online date16 Jul 2018
DOIs
Publication statusPublished - 2018

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Inductively coupled plasma mass spectrometry
Coal
Vaporization
Sampling
Inductively coupled plasma
Calibration
Microwaves
Flow rate
Minerals
Flow of gases
Furnaces
Pyrolysis
Oxygen

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Feasibility of As, Sb, Se and Te determination in coal by solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry. / Henn, Alessandra S.; Flores, Erico M. M.; Dressler, Valderi L.; Mesko, Marcia F.; Feldmann, Joerg; Mello, Paola A.

In: Journal of Analytical Atomic Spectrometry, Vol. 33, No. 8, 2018, p. 1384-1393.

Research output: Contribution to journalArticle

Henn, Alessandra S. ; Flores, Erico M. M. ; Dressler, Valderi L. ; Mesko, Marcia F. ; Feldmann, Joerg ; Mello, Paola A. / Feasibility of As, Sb, Se and Te determination in coal by solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry. In: Journal of Analytical Atomic Spectrometry. 2018 ; Vol. 33, No. 8. pp. 1384-1393.
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title = "Feasibility of As, Sb, Se and Te determination in coal by solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry",
abstract = "In this work, a method for the determination of As, Sb, Se and Te in mineral coal was developed using solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry (SS-ETV-ICP-MS). The following operational parameters of the ETV-ICP-MS system were evaluated: the furnace temperature program, the mass of Ir used as the modifier, the oxygen flow rate (used in the pyrolysis step) and carrier and bypass gas flow rates. The possibility of using calibration with aqueous standard solutions was also investigated. Calibration using aqueous standard solutions was feasible for As, Sb and Te determination, and calibration using certified reference materials (CRMs) of coal was required for Se determination. For comparison of the results, coal samples were decomposed by microwave-assisted wet digestion to obtain reference values for As and Sb by ICP-MS and Se by collision/reaction cell technology inductively coupled plasma mass spectrometry (CRC-ICP-MS). In addition, samples were digested by microwave-induced combustion to obtain reference values for Te by ICP-MS. No statistical difference was observed between the results by SS-ETV-ICP-MS and those obtained by ICP-MS (As, Sb and Te) or CRC-ICP-MS (Se) after sample digestion. Additionally, CRMs of coal (NIST 1632b, NIST 1632c and NIST 1635) were analysed by SS-ETV-ICP-MS, and the results were in agreement with the certified values. The limit of quantification was 0.03, 0.01, 0.03 and 0.006 μg g−1 for As, Sb, Se and Te, respectively. These values were lower than those obtained by other methods and allowed the determination of analytes at trace and ultra-trace levels. The SS-ETV-ICP-MS method for coal presented other advantages, such as minimization of the sample preparation step, minimization of the use of large amounts of reagents and suitability of accurate determination of those analytes commonly susceptible to limitations using conventional methods.",
author = "Henn, {Alessandra S.} and Flores, {Erico M. M.} and Dressler, {Valderi L.} and Mesko, {Marcia F.} and Joerg Feldmann and Mello, {Paola A.}",
note = "Acknowledgements The authors are grateful to Conselho Nacional de Desenvolvimento Cientıfco e Tecnologico (CNPq, Grant 309297/2016-8), Coordena{\cc}ao de Aperfei{\cc}oamento de Pessoal de Nıvel Superior (CAPES) and Funda{\cc}ao de Amparoa Pesquisa do Estado do Rio Grande do Sul (FAPERGS, Grant 16/2551-0000516-8) for supporting this study. Funding for the sample collection was provided by NERC Security of Supply programme UK (grant NE/L001764/1).",
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T1 - Feasibility of As, Sb, Se and Te determination in coal by solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry

AU - Henn, Alessandra S.

AU - Flores, Erico M. M.

AU - Dressler, Valderi L.

AU - Mesko, Marcia F.

AU - Feldmann, Joerg

AU - Mello, Paola A.

N1 - Acknowledgements The authors are grateful to Conselho Nacional de Desenvolvimento Cientıfco e Tecnologico (CNPq, Grant 309297/2016-8), Coordenaçao de Aperfeiçoamento de Pessoal de Nıvel Superior (CAPES) and Fundaçao de Amparoa Pesquisa do Estado do Rio Grande do Sul (FAPERGS, Grant 16/2551-0000516-8) for supporting this study. Funding for the sample collection was provided by NERC Security of Supply programme UK (grant NE/L001764/1).

PY - 2018

Y1 - 2018

N2 - In this work, a method for the determination of As, Sb, Se and Te in mineral coal was developed using solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry (SS-ETV-ICP-MS). The following operational parameters of the ETV-ICP-MS system were evaluated: the furnace temperature program, the mass of Ir used as the modifier, the oxygen flow rate (used in the pyrolysis step) and carrier and bypass gas flow rates. The possibility of using calibration with aqueous standard solutions was also investigated. Calibration using aqueous standard solutions was feasible for As, Sb and Te determination, and calibration using certified reference materials (CRMs) of coal was required for Se determination. For comparison of the results, coal samples were decomposed by microwave-assisted wet digestion to obtain reference values for As and Sb by ICP-MS and Se by collision/reaction cell technology inductively coupled plasma mass spectrometry (CRC-ICP-MS). In addition, samples were digested by microwave-induced combustion to obtain reference values for Te by ICP-MS. No statistical difference was observed between the results by SS-ETV-ICP-MS and those obtained by ICP-MS (As, Sb and Te) or CRC-ICP-MS (Se) after sample digestion. Additionally, CRMs of coal (NIST 1632b, NIST 1632c and NIST 1635) were analysed by SS-ETV-ICP-MS, and the results were in agreement with the certified values. The limit of quantification was 0.03, 0.01, 0.03 and 0.006 μg g−1 for As, Sb, Se and Te, respectively. These values were lower than those obtained by other methods and allowed the determination of analytes at trace and ultra-trace levels. The SS-ETV-ICP-MS method for coal presented other advantages, such as minimization of the sample preparation step, minimization of the use of large amounts of reagents and suitability of accurate determination of those analytes commonly susceptible to limitations using conventional methods.

AB - In this work, a method for the determination of As, Sb, Se and Te in mineral coal was developed using solid sampling electrothermal vaporization inductively coupled plasma mass spectrometry (SS-ETV-ICP-MS). The following operational parameters of the ETV-ICP-MS system were evaluated: the furnace temperature program, the mass of Ir used as the modifier, the oxygen flow rate (used in the pyrolysis step) and carrier and bypass gas flow rates. The possibility of using calibration with aqueous standard solutions was also investigated. Calibration using aqueous standard solutions was feasible for As, Sb and Te determination, and calibration using certified reference materials (CRMs) of coal was required for Se determination. For comparison of the results, coal samples were decomposed by microwave-assisted wet digestion to obtain reference values for As and Sb by ICP-MS and Se by collision/reaction cell technology inductively coupled plasma mass spectrometry (CRC-ICP-MS). In addition, samples were digested by microwave-induced combustion to obtain reference values for Te by ICP-MS. No statistical difference was observed between the results by SS-ETV-ICP-MS and those obtained by ICP-MS (As, Sb and Te) or CRC-ICP-MS (Se) after sample digestion. Additionally, CRMs of coal (NIST 1632b, NIST 1632c and NIST 1635) were analysed by SS-ETV-ICP-MS, and the results were in agreement with the certified values. The limit of quantification was 0.03, 0.01, 0.03 and 0.006 μg g−1 for As, Sb, Se and Te, respectively. These values were lower than those obtained by other methods and allowed the determination of analytes at trace and ultra-trace levels. The SS-ETV-ICP-MS method for coal presented other advantages, such as minimization of the sample preparation step, minimization of the use of large amounts of reagents and suitability of accurate determination of those analytes commonly susceptible to limitations using conventional methods.

U2 - 10.1039/C8JA00129D

DO - 10.1039/C8JA00129D

M3 - Article

VL - 33

SP - 1384

EP - 1393

JO - Journal of Analytical Atomic Spectrometry

JF - Journal of Analytical Atomic Spectrometry

SN - 0267-9477

IS - 8

ER -