Abstract
Laser‐excited atomic fluorescence spectrometry (LEAFS) and laser‐enhanced ionization (LEI) are very sensitive methods for elemental analysis. LEAFS involves excitation of atoms by laser radiation followed by detection of the resulting fluorescence, while LEI involves laser excitation, which serves to enhance ionization, producing electrons and ions that can be collected in an electric field. In this article, the spectroscopic transitions involved in LEAFS and LEI are discussed, followed by a review of the instrumentation employed. Several recent developmens in LEAFS and LEI are reviewed, including the use of tungsten coil atomizers for LEAFS; the determination of mercury, aluminum, lead, thulium, and chromium using various graphite electrothermal atomizers; the use of LEAFS and LEI as detectors for gas chromatography for the determination of volatile tin compounds; and the determination of a variety of elements by LEI with a flame atom cell. LEAFS and LEI will continue in the future to be high‐sensitivity alternatives to conventional methods of elemental analysis.
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