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Laser-Enhanced Ionization Spectrometry: Characterization of Electrical Interferences

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Abstract:

The electrical interferences associated with laser-enhanced ionization (LEI) spectrometry are characterized in this study. This was accomplished by comparison of LEI signal behavior in acetylene/air and hydrogen/air flames. A discussion of the relationship of the analytical signal and the total ion concentration in the flame is presented. The results of flame composition experiments are discussed as well as the role of matrix ions in determining signal strength. Experiments with modified sensing electrodes and higher applied voltages illustrate a partial remedy for electrical interferences.

Keywords: Electrical interferences; Ionization interferences; Laser-enhanced ionization spectrometry; Optogalvanic spectrometry

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702804731285

Affiliations: 1: Department of Chemistry, University of Arkansas, Fayetteville, Arkansas 72701 2: Department of Chemistry, West Virginia University, Morgantown, West Virginia 26506

Publication date: September 1, 1980

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