Detector for trace elemental analysis of solid environmental samples by laser plasma spectroscopy

Analysis of heavy metals in soils, sand, and sewage sledge samples has been studied by means of time-resolved optical emission spectrometry from laser-induced plasma. The instrumental setup has been developed as a fast screening detector for future application as an on-line and in situ method. Several experimental parameters had to be optimized. Various factors affecting the detection limits and the quality of the analysis have been investigated. These include aerosol production, crater formation, size effects, timing effects, laser intensities, and humidity. In order to improve reproducibility of elemental analysis, a special data analysis program has been developed. It consists of a data analysis program and of the principal component regression calibration technique, which utilizes many spectral lines for each element

[1]  A. S. Silenok,et al.  Fire ball formation and evolution in the case of low‐threshold optical breakdown plasma generation in ambient gases in front of various solid samples , 1989 .

[2]  V. Palleschi,et al.  Time-resolved LIBS experiment for quantitative determination of pollutant concentrations in air , 1991 .

[3]  K. Niemax,et al.  Temporal and spatial distribution of analyte atoms and ions in microplasmas produced by laser ablation of solid samples , 1990 .

[4]  K. Niemax,et al.  On the internal standardization in optical emission spectrometry of microplasmas produced by laser ablation of solid samples , 1989 .

[5]  E. Yeung,et al.  Acoustic signal as an internal standard for quantitation in laser-generated plumes , 1988 .

[6]  P. Huang.  Adsorption Processes in Soil , 1980 .

[7]  K. Niemax,et al.  Basic investigations for laser microanalysis: II. Laser-induced fluorescence in laser-produced sample plumes , 1989 .

[8]  D. H. Tracy,et al.  Multivariate methods for interpretation of emission spectra from the inductively coupled plasma , 1992 .

[9]  E. Piepmeier,et al.  Laser ablation and the laser microprobe , 1988 .

[10]  E. Piepmeier.  Analytical applications of lasers , 1986 .

[11]  Multisignal calibration in optical emission spectroscopy , 1993 .

[12]  K. Niemax,et al.  Optical emission spectrometry and laser-induced fluorescence of laser produced sample plumes. , 1990, Applied optics.

[13]  R. Königstein,et al.  Zur Methodik der mikrochemischen Fettbestimmung in biologischen Flüssigkeiten , 1937 .

[14]  S. Chenery,et al.  Nature of particulate matter produced by laser ablation—implications for tandem analytical systems , 1990 .

[15]  K. Niemax,et al.  Internal standardization in laser induced fluorescence spectrometry of microplasmas produced by laser ablation of solid samples , 1990 .

[16]  T. Hall,et al.  Enhanced line emission from laser‐produced plasmas , 1991 .