Electronic nose and SPME techniques to monitor phenanthrene biodegradation in soil
Author(s)
Date Issued
2008
Type
Article
Abstract
In this work two recently developed techniques (solid phase microextraction-SPME associated to gas-chromatography mass spectrometry-GC/MS analysis and electronic nose-EN), able to analyse the headspace of solid or liquid samples, were used to monitor the possible degradation of phenanthrene in an artificially contaminated soil. The analysis by SPME-GC/MS showed a drastic decrease of phenanthrene content after 30 days of incubation (-92%) and different treatments with nutritive solutions and/or surfactant improve this rate up to 97%. Differently, the analysis of soil headspaces by EN, processed by principal component analysis (PCA), showed that both contaminated and uncontaminated soil samples (controls) might be distinguished on a temporal scale and that they were delayed relative to controls. The application of PLS-DA to chromatograms obtained by SPME-GC/MS pointed out the presence, in polluted soils, of a series of possible indicators involved in the phenanthrene degradation, which were completely absent in relative control sample.
Additional information
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Citation
De Cesare, F. et al. 2008. Electronic nose and SPME techniques to monitor phenanthrene biodegradation in soil. "Sensors and Actuators, B: Chemical" 131(1): 63-70
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