BOKU - Universität für Bodenkultur Wien - Forschungsinformationssystem
Gewählte Publikation:
Steiner, H; Staubmann, K; Allabashi, R; Fleischmann, N; Katzir, A; Reichlin, Y; Milzaikoff, B.
(2003):
Online sensing of volatile organic compounds in groundwater using mid-infrared fibre optic evanescent wave spectroscopy: a pilot scale test.
Water Sci Technol. 2003; 47(2):121-126
- Abstract:
- A prototype sensing system for in-situ monitoring of volatile organic compounds in contaminated groundwater was tested at a pilot scale plant. The sensor consists of a commercially available Fourier transform infrared spectrometer, connected to a 6 m long infrared transparent silver halide fibre optic cable. A 10 cm long core-only section at the centre of the fibre is mounted on a sensor head and coated with a hydrophobic polymer layer, while the remaining fibre is protected by Teflon tubing and thus not in contact with the surrounding media. The sensor head was immersed into the monitoring wells of the pilot plant testing the sensor system under circumstances close to field conditions and typical for in-situ measurements. The pilot plant consists of a 1 m(3) cubic tank filled with gravel. A pump is used to circulate water horizontally through the tank, simulating a natural aquifer. The evolution of the concentration of analytes injected into the system is monitored with time using the developed prototype sensing system. The results are validated by corresponding sampling and analysis with headspace gas chromatography.
- Autor*innen der BOKU Wien:
- Allabashi Roza
- Find related publications in this database (using NML MeSH Indexing)
- Environmental Monitoring - methods
- Optics and Photonics - methods
- Organic Chemicals - analysis
- Refuse Disposal - analysis
- Soil Pollutants - analysis
- Spectrum Analysis - methods
- Volatilization - methods
- Water Movements - methods
- Water Pollutants, Chemical - analysis
- Water Supply - analysis
- Find related publications in this database (Keywords)
- IR sensor
- landfills
- polyethylene-co-propylene
- polymer coating
- silver halide fibre
- volatile organic compounds
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