Please use this identifier to cite or link to this item: http://hdl.handle.net/11400/8246
Title: Dielectric and conductivity measurements as proxy method to monitor contamination in sandstone
Authors: Σάλτας, Βασίλης
Βαλλιανάτος, Φίλιππος
Σουπιός, Παντελής
Μακρής, Ιωάννης Π.
Τριάντης, Δήμος Α.
Item type: Journal article
Keywords: dielectric spectroscopy;Sandstone;Leachate;Contamination;Διηλεκτρική φασματοσκοπία;Ψαμμίτης;Στραγγίσματα;Μόλυνση
Subjects: Geography
Environmental sciences
Γεωγραφία
Περιβαλλοντικές επιστήμες
Issue Date: 5-Apr-2015
2-Apr-2007
Date of availability: 5-Apr-2015
Publisher: Elsevier
Abstract: The present work investigates whether dielectric spectroscopy can be used to detect contamination, which may leach in a natural porous material, due to the spreading of contaminants. For this purpose, dielectric and conductivity measurements, in the frequency range from 10 mHz to 1 MHz, were carried out in sandstone samples, partially filled or saturated with solutions of leachates, at different concentrations. The experimental results suggest the dominant role of free water to the measured electrical conductivity and dielectric permittivity in contaminated samples with high water content. On the other hand, various relaxation mechanisms were observed in dried samples at different leachate concentrations. Experimental data were fitted using the Havriliak–Negami dielectric relaxation function, superimposed with a conductivity term. The determined parameters of the fitting function may serve to distinguish between different amounts of leachate in sandstone samples.
Language: English
Citation: SALTAS, V., VALLIANATOS, F., SOUPIOS, P., MAKRIS, I.P. & TRIANTIS, D.A. (2007). Dielectric and conductivity measurements as proxy method to monitor contamination in sandstone. Journal of Hazardous Materials. [Online] 142 (1-2). p.520-525. Available from: http://www.sciencedirect.com/ [Accessed 30/08/2006]
Journal: Journal of Hazardous Materials
Type of Journal: With a review process (peer review)
Access scheme: Publicly accessible
License: Αναφορά Δημιουργού-Μη Εμπορική Χρήση-Όχι Παράγωγα Έργα 3.0 Ηνωμένες Πολιτείες
URI: http://hdl.handle.net/11400/8246
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