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Multielement analysis of polyethylene using solid sampling electrothermal vaporization ICP mass spectrometry

(2000) ANALYTICAL CHEMISTRY. 72(18). p.4310-4316
Author
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Abstract
Next to laser ablation (LA) also electrothermal vaporization (ETV) from a graphite furnace as a means of sample introduction opens possibilities for direct analysis of solid samples using inductively coupled plasma mass spectrometry (ICPMS). In this paper, it is demonstrated that solid sampling ETV-ICPMS is very web suited for the determination of metal traces in polyethylene. A limited multielement capability is often cited as an important drawback of ETV-ICPMS. However, by studying the effect of monitoring an increasing number of mass-to-charge ratios on the signal profile (integrated signal intensity and repeatability) of selected analyte elements, the multielement capability of (solid sampling) ETV-ICPMS was systematically evaluated, and the results obtained suggest that,with a quadrupole-based ICPMS instrument, at least 11 elements can be determined "simultaneously" (from the same vaporization step), in essence without compromising the sensitivity or the precision of the results obtained. In this work, the "simultaneous" determination of Al, Ba, Cd, Cu, Mn, Pb, and Ti in a polyethylene candidate reference material. has been accomplished, despite the large variation in analyte concentration (from 5 ng/g for Mn to 500 mu g/g for Ti) and in furnace behavior (volatility) they exhibit. To avoid premature losses of Cd during thermal pretreatment of the samples, Pd was used as a chemical modifier. Two different calibration methods external calibration using an aqueous standard solution and single standard additon-were studied and the results obtained were compared with those obtained using neutron activation analysis (NAA) and/or with the corresponding (candidate) certified values (if available). Single standard addition was shown to be preferable (average deviation between ICPMS result and reference value < 3%), although-except for Ba-acceptable results could also be obtained with external calibration.
Keywords
STANDARD REFERENCE MATERIALS, ATOMIC-ABSORPTION SPECTROMETRY, NEUTRON-ACTIVATION ANALYSIS, LASER-ABLATION, EMISSION-SPECTROMETRY, GRAPHITE-FURNACE, CHEMICAL MODIFIERS, SILICON-CARBIDE, TRACE-ELEMENTS, PLASMA

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Citation

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MLA
Vanhaecke, Frank, et al. “Multielement Analysis of Polyethylene Using Solid Sampling Electrothermal Vaporization ICP Mass Spectrometry.” ANALYTICAL CHEMISTRY, vol. 72, no. 18, 2000, pp. 4310–16.
APA
Vanhaecke, F., Resano Ezcaray, M., Verstraete, M., Moens, L., & Dams, R. (2000). Multielement analysis of polyethylene using solid sampling electrothermal vaporization ICP mass spectrometry. ANALYTICAL CHEMISTRY, 72(18), 4310–4316.
Chicago author-date
Vanhaecke, Frank, Martin Resano Ezcaray, Marieke Verstraete, Luc Moens, and Richard Dams. 2000. “Multielement Analysis of Polyethylene Using Solid Sampling Electrothermal Vaporization ICP Mass Spectrometry.” ANALYTICAL CHEMISTRY 72 (18): 4310–16.
Chicago author-date (all authors)
Vanhaecke, Frank, Martin Resano Ezcaray, Marieke Verstraete, Luc Moens, and Richard Dams. 2000. “Multielement Analysis of Polyethylene Using Solid Sampling Electrothermal Vaporization ICP Mass Spectrometry.” ANALYTICAL CHEMISTRY 72 (18): 4310–4316.
Vancouver
1.
Vanhaecke F, Resano Ezcaray M, Verstraete M, Moens L, Dams R. Multielement analysis of polyethylene using solid sampling electrothermal vaporization ICP mass spectrometry. ANALYTICAL CHEMISTRY. 2000;72(18):4310–6.
IEEE
[1]
F. Vanhaecke, M. Resano Ezcaray, M. Verstraete, L. Moens, and R. Dams, “Multielement analysis of polyethylene using solid sampling electrothermal vaporization ICP mass spectrometry,” ANALYTICAL CHEMISTRY, vol. 72, no. 18, pp. 4310–4316, 2000.
@article{124823,
  abstract     = {Next to laser ablation (LA) also electrothermal vaporization (ETV) from a graphite furnace as a means of sample introduction opens possibilities for direct analysis of solid samples using inductively coupled plasma mass spectrometry (ICPMS). In this paper, it is demonstrated that solid sampling ETV-ICPMS is very web suited for the determination of metal traces in polyethylene. A limited multielement capability is often cited as an important drawback of ETV-ICPMS. However, by studying the effect of monitoring an increasing number of mass-to-charge ratios on the signal profile (integrated signal intensity and repeatability) of selected analyte elements, the multielement capability of (solid sampling) ETV-ICPMS was systematically evaluated, and the results obtained suggest that,with a quadrupole-based ICPMS instrument, at least 11 elements can be determined "simultaneously" (from the same vaporization step), in essence without compromising the sensitivity or the precision of the results obtained. In this work, the "simultaneous" determination of Al, Ba, Cd, Cu, Mn, Pb, and Ti in a polyethylene candidate reference material. has been accomplished, despite the large variation in analyte concentration (from 5 ng/g for Mn to 500 mu g/g for Ti) and in furnace behavior (volatility) they exhibit. To avoid premature losses of Cd during thermal pretreatment of the samples, Pd was used as a chemical modifier. Two different calibration methods external calibration using an aqueous standard solution and single standard additon-were studied and the results obtained were compared with those obtained using neutron activation analysis (NAA) and/or with the corresponding (candidate) certified values (if available). Single standard addition was shown to be preferable (average deviation between ICPMS result and reference value < 3%), although-except for Ba-acceptable results could also be obtained with external calibration.},
  author       = {Vanhaecke, Frank and Resano Ezcaray, Martin and Verstraete, Marieke and Moens, Luc and Dams, Richard},
  issn         = {0003-2700},
  journal      = {ANALYTICAL CHEMISTRY},
  keywords     = {STANDARD REFERENCE MATERIALS,ATOMIC-ABSORPTION SPECTROMETRY,NEUTRON-ACTIVATION ANALYSIS,LASER-ABLATION,EMISSION-SPECTROMETRY,GRAPHITE-FURNACE,CHEMICAL MODIFIERS,SILICON-CARBIDE,TRACE-ELEMENTS,PLASMA},
  language     = {eng},
  number       = {18},
  pages        = {4310--4316},
  title        = {Multielement analysis of polyethylene using solid sampling electrothermal vaporization ICP mass spectrometry},
  url          = {http://dx.doi.org/10.1021/ac0002700},
  volume       = {72},
  year         = {2000},
}

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