The use of direct sample insertion into a nitrogen-argon inductively coupled plasma for emission spectrometry-I. Technique optimization and application to the analysis of aluminium oxide

G. Záray, J. A C Broekaert, F. Leis

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Abstract

The determination of trace elements in aluminium oxide with the aid of direct sample insertion inductively coupled plasma atomic emission spectrometry (ICP-AES) has been studied. The form and shape of the graphite cups containing the sample as well as the gas flows and other ICP parameters were optimized with dry solution residues containing zinc, copper and strontium. It was found that after mixing the aluminium oxide in the proportion 1:1 with graphite powder and briquetting pellets of 10-20 mg, relatively volatile elements such as Cd, Cu, Mg and Zn could be volatilized and detected down to the μg g level. For titanium, which forms refractory carbides, the effect of different volatilization aids (NH4C1, AgCl, BaF2 and PTFE) has been studied. With addition of PTFE quantitative determinations are possible and a detection limit of 7 μg g is obtained. Relative standard deviations in the case of peak areas obtained from time-resolved and simultaneous measurements of line and background intensities are at the order of 5 % and the calibration curves are linear over at least one order of magnitude.

Original languageEnglish
Pages (from-to)241-253
Number of pages13
JournalSpectrochimica Acta - Part B Atomic Spectroscopy
Volume43
Issue number3
DOIs
Publication statusPublished - 1988

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Aluminum Oxide
Argon
Polytetrafluoroethylene
Inductively coupled plasma
Polytetrafluoroethylenes
Spectrometry
insertion
Nitrogen
aluminum oxides
argon
Briquetting
Aluminum
nitrogen
Strontium
optimization
Oxides
Trace Elements
graphite
Titanium

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

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title = "The use of direct sample insertion into a nitrogen-argon inductively coupled plasma for emission spectrometry-I. Technique optimization and application to the analysis of aluminium oxide",
abstract = "The determination of trace elements in aluminium oxide with the aid of direct sample insertion inductively coupled plasma atomic emission spectrometry (ICP-AES) has been studied. The form and shape of the graphite cups containing the sample as well as the gas flows and other ICP parameters were optimized with dry solution residues containing zinc, copper and strontium. It was found that after mixing the aluminium oxide in the proportion 1:1 with graphite powder and briquetting pellets of 10-20 mg, relatively volatile elements such as Cd, Cu, Mg and Zn could be volatilized and detected down to the μg g level. For titanium, which forms refractory carbides, the effect of different volatilization aids (NH4C1, AgCl, BaF2 and PTFE) has been studied. With addition of PTFE quantitative determinations are possible and a detection limit of 7 μg g is obtained. Relative standard deviations in the case of peak areas obtained from time-resolved and simultaneous measurements of line and background intensities are at the order of 5 {\%} and the calibration curves are linear over at least one order of magnitude.",
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AU - Broekaert, J. A C

AU - Leis, F.

PY - 1988

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N2 - The determination of trace elements in aluminium oxide with the aid of direct sample insertion inductively coupled plasma atomic emission spectrometry (ICP-AES) has been studied. The form and shape of the graphite cups containing the sample as well as the gas flows and other ICP parameters were optimized with dry solution residues containing zinc, copper and strontium. It was found that after mixing the aluminium oxide in the proportion 1:1 with graphite powder and briquetting pellets of 10-20 mg, relatively volatile elements such as Cd, Cu, Mg and Zn could be volatilized and detected down to the μg g level. For titanium, which forms refractory carbides, the effect of different volatilization aids (NH4C1, AgCl, BaF2 and PTFE) has been studied. With addition of PTFE quantitative determinations are possible and a detection limit of 7 μg g is obtained. Relative standard deviations in the case of peak areas obtained from time-resolved and simultaneous measurements of line and background intensities are at the order of 5 % and the calibration curves are linear over at least one order of magnitude.

AB - The determination of trace elements in aluminium oxide with the aid of direct sample insertion inductively coupled plasma atomic emission spectrometry (ICP-AES) has been studied. The form and shape of the graphite cups containing the sample as well as the gas flows and other ICP parameters were optimized with dry solution residues containing zinc, copper and strontium. It was found that after mixing the aluminium oxide in the proportion 1:1 with graphite powder and briquetting pellets of 10-20 mg, relatively volatile elements such as Cd, Cu, Mg and Zn could be volatilized and detected down to the μg g level. For titanium, which forms refractory carbides, the effect of different volatilization aids (NH4C1, AgCl, BaF2 and PTFE) has been studied. With addition of PTFE quantitative determinations are possible and a detection limit of 7 μg g is obtained. Relative standard deviations in the case of peak areas obtained from time-resolved and simultaneous measurements of line and background intensities are at the order of 5 % and the calibration curves are linear over at least one order of magnitude.

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