Direct loading of ethanol solution into high-power nitrogen-oxygen mixed gas microwave-induced plasma and the emission characteristics

Tetsuo Maeda, Kazuaki Wagatsuma

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

A nitrogen-oxygen mixed gas microwave-induced plasma (MIP) with an Okamoto cavity was utilized as an atomization and excitation source for emission analysis when organic solvent samples are directly aspirated. Compared with the pure nitrogen plasma (excitation temperature of 5650 K), the excitation temperature in the nitrogen-oxygen mixed gas plasma (5100 K) was reduced, and thus, the detection sensitivity of ionic emission lines requiring higher excitation energy was degraded. However, nitrogen-oxygen mixed gases could produce the very stable microwave-induced plasma with a high robustness against the loading of ethanol solution. This effect might be because the organic solvent was completely burned in the oxygen-containing plasma. The excitation temperature was almost independent of the ethanol content in sample solutions, implying that the analytical performance was less effected by introducing organic solvent samples.

Original languageEnglish
Pages (from-to)81-87
Number of pages7
JournalSpectrochimica Acta - Part B Atomic Spectroscopy
Volume60
Issue number1
DOIs
Publication statusPublished - 2005 Jan 10

Keywords

  • Band spectrum
  • Excitation temperature
  • Loading of ethanol solution
  • Microwave-induced plasma
  • Okamoto cavity
  • Optical emission spectrometry

ASJC Scopus subject areas

  • Analytical Chemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Spectroscopy

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