Laser-induced Breakdown Spectroscopy for detection of heavy metals in environmental samples

Richard Wisbrun, Israel Schechter, Reinhard Niessner, Hartmut Schröder

Research output: Contribution to journalConference articlepeer-review

15 Scopus citations

Abstract

The application of LIBS technique 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.

Original languageEnglish
Pages (from-to)2-15
Number of pages14
JournalProceedings of SPIE - The International Society for Optical Engineering
Volume1716
DOIs
StatePublished - 1992
Externally publishedYes
EventInternational Conference on Monitoring of Toxic Chemicals and Biomarkers 1992 - Berlin, Germany
Duration: 15 Jun 199219 Jun 1992

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