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Characterization Of Contaminated Soils Using Hyperspectral Spectroscopy: A Case Study Of The Abandoned Hammam Zriba Mine In Tunisia

Laboratory and field Hyperspectral spectroscopy have been widely used for the study of contaminated soils, in particular by predicting the content of heavy metal [1] [2]. The characterization of risk minerals using hyperspectral spectroscopy has however not been addressed. The proposed methodology consists in the characterization of risk minerals in order to predict their contents within agricultural soils around the Hammam Zriba mine in the North of Tunisia using field Hyperspectral spectroscopy. The Continuum Removal (CR) method was processed for a judicious absorption feature selection. The identification of risk minerals as well as the quantification of their contents were revealed by the X-Ray diffraction (XRD) method. Correlation results have shown the convergence between XRD and Hyperspectral analyzes. The selected bands will be used in further time for regression processes, which relate soil VNIR/SWIR (Visible and Near Infrared Short Waves InfraRed) (350-2500 nm) reflectance spectra to the concentration of risk minerals.