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FIBER OPTIC SENSOR FOR IN-SITU AND REALTIME MONITORING OF TRANSPORT OF GAS PHASE OZONE IN UNSATURATED POROUS MEDIA
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  • Journal title : Environmental Engineering Research
  • Volume 10, Issue 2,  2005, pp.71-78
  • Publisher : Korean Society of Environmental Engineering
  • DOI : 10.4491/eer.2005.10.2.071
 Title & Authors
FIBER OPTIC SENSOR FOR IN-SITU AND REALTIME MONITORING OF TRANSPORT OF GAS PHASE OZONE IN UNSATURATED POROUS MEDIA
Jung, Hae-Ryong; Park, Hee-Chul;
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 Abstract
A series of column experiments was conducted to develop a monitoring system for in-situ and realtime measurement of ozone transport in unsaturated porous media using a fiber optic sensor. The calibration of the fiber optic transflection dip probe (FOTDP) system was successfully carried out at various ozone concentrations using a column with length of 30 cm and diameter of 5 cm packed with glass beads, which don't react with gaseous ozone. The breakthrough curves (BTCs) of ozone were obtained by converting the normalized intensity into ozone concentration. The FOTDP system worked well for in-situ monitoring of gas phase ozone at various water saturations and in presence of soil organic matter (SOM). However, the FOTDP system did not measure the ozone concentration at more than 70% water saturation.
 Keywords
 Language
English
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