Abstract

Laser-enhanced ionization (LEI) spectrometry using a water-cooled electrode immersed directly in a nitrous oxide-acetylene flame has been examined for the determination of refractory elements. LEI detection limits for refractory elements in aqueous solution are comparable to or better than detection limits obtained by flame atomic absorption, plasma emission, and atomic fluorescence techniques. Only graphite furnace atomic absorption spectrometry exhibits superior detectability for certain refractory elements in aqueous solution over LEI spectrometry using a nitrous oxide-acetylene flame. The successful application of the nitrous oxide-acetylene flame now extends the applicability of LEI spectrometry to include most of the elements in the periodic table which can be determined by other common atomic spectrochemical techniques.

Atomic Emission Characteristics of a Premixed Acetylene–Nitrous Oxide, Total Consumption Flame

Victor G. Mossotti and Marjorie Duggan
Appl. Opt. 7(7) 1325-1330 (1968)

Nitrous Oxide Supported Flames for Atomic Absorption Spectroscopy

L. R. P. Butler and Anne Fulton
Appl. Opt. 7(10) 2131-2137 (1968)

Detection of traces in semiconductor materials by two-color laser-enhanced ionization spectroscopy in flames

Ove Axner, Mats Lejon, Ingemar Magnusson, Halina Rubinsztein-Dunlop, and Sten Sjöström
Appl. Opt. 26(17) 3521-3525 (1987)

Detection of trace amounts of Cr by two laser-based spectroscopic techniques: laser-enhanced ionization in flames and laser-induced fluorescence in graphite furnace

Ove Axner and Halina Rubinsztein-Dunlop
Appl. Opt. 32(6) 867-884 (1993)

Laser-enhanced flame ionization detector

Terrill A. Cool and John E. M. Goldsmith
Appl. Opt. 26(17) 3542-3551 (1987)