Partial least-squares near-infrared determination of hydrocarbons removed from polluted waters by using tanned solid wastes |
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| Authors: | A Gammoun J Moros S Tahiri S Garrigues M de la Guardia |
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| Institution: | (1) Faculté des Sciences - Université Hassan II Aïn Chock, Casablanca, Morocco;(2) Faculté de Sciences d’El Jadida. Département de Chimie, Université Chouaïb Doukkali, El Jadida, Morocco;(3) Department of Analytical Chemistry, University of Valencia, Research building, 50th Dr. Moliner st., 46100 Burjassot, Valencia, Spain |
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| Abstract: | A new procedure has been developed for the determination of hydrocarbons retained in solid tanned wastes from polluted waters. The method uses near-infrared (NIR) transmission spectra obtained from leachates of the hydrocarbons with CCl4 using a partial least-squares (PLS) calibration model based on the use of mixtures of n-hexane, isooctane, and toluene diluted with CCl4. This methodology was applied to the evaluation of the absorption capacity of chrome shavings in water samples polluted with hydrocarbons, resulting in a maximum absorption capacity of 6.30 g hydrocarbons per g solid waste. |
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| Keywords: | Hydrocarbons Isooctane Toluene n-Hexane Tannery solid wastes NIR determination PLS |
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