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Proceedings Paper

Laser-induced breakdown spectroscopy for detection of heavy metals in environmental samples
Author(s): Richard W. Wisbrun; Israel Schechter; Reinhard Niessner; Hartmut Schroeder
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Paper Abstract

The application of LIBS technology as a sensor for heavy metals in solid environmental samples has been studied. This specific application introduces some new problems in the LIBS analysis. Some of them are related to the particular distribution of contaminants in the grained samples. Other problems are related to mechanical properties of the samples and to general matrix effects, like the water and organic fibers content of the sample. An attempt has been made to optimize the experimental set-up for the various involved parameters. The understanding of these factors has enabled the adjustment of the technique to the substrates of interest. The special importance of the grain size and of the laser-induced aerosol production is pointed out. Calibration plots for the analysis of heavy metals in diverse sand and soil samples have been carried out. The detection limits are shown to be usually below the recent regulation restricted concentrations.

Paper Details

Date Published: 9 March 1993
PDF: 14 pages
Proc. SPIE 1716, International Conference on Monitoring of Toxic Chemicals and Biomarkers, (9 March 1993); doi: 10.1117/12.140236
Show Author Affiliations
Richard W. Wisbrun, Technische Univ. Muenchen (Germany)
Israel Schechter, Technische Univ. Muenchen (Germany)
Reinhard Niessner, Technische Univ. Muenchen (Germany)
Hartmut Schroeder, Max-Planck-Institut fuer Quantenoptik (Germany)

Published in SPIE Proceedings Vol. 1716:
International Conference on Monitoring of Toxic Chemicals and Biomarkers
Tuan Vo-Dinh; Karl Cammann, Editor(s)

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