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Sensors 2010, 10(4), 3868-3881; doi:10.3390/s100403868

Spectroscopic Interpretation of PAH-Spectra in Minerals and Its Possible Application to Soil Monitoring

1,* , 1
1 Department of Environmental Science and Engineering, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712, Korea 2 Division of Earth Environmental System, College of Natural Science, Pusan National University, Busan 600-735, Korea 3 Laser Laboratorium Goettingen, Hans-Adolf-Krebs-Weg 1, 37077 Goettingen, Germany
* Author to whom correspondence should be addressed.
Received: 3 February 2010 / Revised: 6 April 2010 / Accepted: 7 April 2010 / Published: 15 April 2010
(This article belongs to the Special Issue Laser Spectroscopy and Sensing)
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In order to properly assess the feasibility of using Laser-Induced Fluorescence (LIF) spectroscopy for soil monitoring, the variation of fluorescence intensity due to the heterogeneity and complexity of soil media was investigated. Different soil minerals showed fluorescence spectral structures distinguishable from the contaminants, implying dissimilar interactions or the binding of contaminants on mineral surfaces. More interestingly, solvent and water addition showed different responses in the fluorescence spectral structure showing their effect on the interactions between contaminants and minerals. These results support the claim that the spectral structure contains information on contaminant-mineral interactions; therefore contaminants can be used as a fluorescence probe for these interactions.
Keywords: PAH; fluorescence; spectral structure; contaminant-soil interaction PAH; fluorescence; spectral structure; contaminant-soil interaction
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Ko, E.-J.; Kim, K.-W.; Park, K.; Kim, J.-Y.; Kim, J.; Hamm, S.-Y.; Lee, J.-H.; Wachsmuth, U. Spectroscopic Interpretation of PAH-Spectra in Minerals and Its Possible Application to Soil Monitoring. Sensors 2010, 10, 3868-3881.

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