Advertisement

Development and Field Test of a New Laser Induced Fluorescence (LIF) Spectrometer for in Situ Investigation of Oil-Contaminated Soils

  • R. Fernández-Trujillo
  • M. Lemke
  • H.-G. Löhmannsröben
  • T. Hengstermann
  • R. H. Schultze
  • L. Schober
Chapter

Abstract

For the in situ detection and analysis of oils (petroleum products and vegetable oils) in soils we developed a family of mobile LIF spectrometers (Oil Pollution Transportable Independent Monitoring System, OPTIMOS) designed for field usage. In the full version, the OPTIMOS consists of a Nd:YAG laser (combination with a dye laser optional), an ICCD (intensified charge coupled device) multichannel detection system and flexible waveguide technology (see the contribution by Hengstermann et al. for more experimental details). We have characterized various versions of the OPTIMOS, including simpler configurations with UV light emitting diodes (LED’s) as the light source and photomultiplier tubes (PMT’s) or photodiodes as detectors. Figure 1 shows the LIF spectra of different petroleum products on a German soil (Ahhorizon). The spectra were recorded with a setup consisting of a N2-laser as the excitation light source, a monochromator / photomultipier combination as the detector and a fibre optical sensor head. Currently, we are improving and expanding the OPTIMOS performance by focusing on:
  • optimized calibration procedures, software-assisted quantification;

  • multi-wavelength excitation (tunable lasers, e.g. dye lasers);

  • improved field performance (ruggedness, reduction in size, weight and electrical power demand);

  • user friendly, ergonomic spectrometer setup.

Keywords

Petroleum Product Total Petroleum Hydrocarbon Laser Induce Fluorescence Intensify Charge Couple Device Laser Induce Fluorescence Spectroscopy 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Preview

Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

References

  1. Löhmannsröben, H.-G. &Roch Th.(2000): In situ laser-induced fluorescence (LIF) analysis of petroleum product-contaminated soil samples. J. Enuiron. Monit. 2,17–22.CrossRefGoogle Scholar
  2. Löhmannsröben, H.-G. &Schober, L. (2000): Determination of optical parameters for light penetration in particulate materials and soils with diffuse reflectance (DR) spectroscopy. J. Enuiron. Monit. 2, 651–655.CrossRefGoogle Scholar
  3. Löhmannsröben, H.-G., Roch Th. & Schultze, R.H. (1999): Laser-induced fluorescence (LIF) spectroscopy for in-situ analysis of petroleum products and biological oils in soils. Polycyclic Aromatic Compounds 13, 165–174.CrossRefGoogle Scholar
  4. Löhmannsröben, H.-G. &Schober, L. (1999): Combination of laser-induced fluorescence (LIF) and diffuse reflectance (DR) spectroscopy for in-situ analysis of diesel fuel-contaminated soils. Appl. Optics 38,1404–1410.CrossRefGoogle Scholar

Copyright information

© Springer Science+Business Media Dordrecht 2002

Authors and Affiliations

  • R. Fernández-Trujillo
    • 1
  • M. Lemke
    • 1
  • H.-G. Löhmannsröben
    • 1
  • T. Hengstermann
    • 2
  • R. H. Schultze
    • 2
  • L. Schober
    • 3
  1. 1.Institut für Physikalische Chemie und Theoretische ChemieUniversität PotsdamGolmGermany
  2. 2.Optimare GmbHWilhelmshaven
  3. 3.Soliton Laser-und Messtechnik GmbHGilchingGermany

Personalised recommendations