MICROBIAL IN SITU DEGRADATION OF AROMATIC HYDROCARBONS IN A CONTAMINATED AQUIFER MONITORED BY CARBON ISOTOPE FRACTIONATION

ANNWEILER E. / MICHAELIS W. / RICHNOW H.H. / et al. - ARTICLE DE PERIODIQUE - 2003

Description of the monitoring profile along a groundwater flow path in polluted zone. Soil percolation columns filled with contamined aquifer material obtain from a former gas plant site. Gas chromatographic analyses of solvent extract and carbon isotope composition of aromatic hydrocarbons were measured. Diagram shows the relationship between response (mV) and the isotope value of CO2 and toluene. Concentrations of aromatic contaminants as BTEX, naphtalene, indane and indene were analysed along 800 m long profile downstream of the contamination source. Estimation of the extent of biodegradation which increase down gradient well with quantification in situ and validation.