Scientific Results

Characteristic vibrational frequencies of toxic polychlorinated dibenzo-dioxins and -furans

Year: 2014

Authors: Patrizi B., Siciliani de Cumis M., Viciani S., D’Amato F., Foggi P.

Autors Affiliation: LENS, University of Florence, Via Nello Carrara 1, 50019 Sesto Fiorentino (FI), Italy;
CNR, Istituto Nazionale di Ottica, Largo Enrico Fermi 6, 50125 Firenze, Italy;
Università degli Studi di Perugia, Dipartimento di Chimica, Via Elce di Sotto 8, 06123 Perugia, Italy

Abstract: The possibility to monitor in real-time the emission of dioxins produced by incineration of waste or by industrial processes is nowadays a necessity considering the high toxicity of these compounds, their persistence in the environment and their ability to bio-accumulate in the food chain. Recently it has been demonstrated the potentiality of detecting dioxins in carbon tetrachloride via MIR Quantum Cascade Lasers. A fundamental step in real time monitoring of dioxins emission is the possibility to recognize the most toxic congeners within complex mixtures and at low concentrations. Taking into account the lack of spectroscopic data about these very toxic environmental pollutants and the necessity to monitor their emissions we have recorded infrared spectra of 13 of the 17 most toxic congeners of polychlorinated dibenzo-p-dioxins (PCDDs) and polychlorinated dibenzo-furans (PCDFs) dissolved in carbon tetrachloride. In this way we have obtained a small database that we have used to test the ability of a linear regression algorithm to recognize each congener and its relative concentration in complex mixtures of these compounds. (C) 2014 Elsevier B.V. All rights reserved.

Journal/Review: JOURNAL OF HAZARDOUS MATERIALS

Volume: 274      Pages from: 98  to: 105

More Information: The authors gratefully acknowledge the financial support from Regione Toscana, within the frame of POR CreO FESR 2007-2013, Project SIMPAS (Innovative Measurement Systems for the Protection of Environment and Health).
KeyWords: Aromatic compounds; Carbon tetrachloride; Incineration; Industrial emissions; Mixtures; Quantum cascade lasers; Waste incineration, Environmental pollutants; FTIR spectroscopy; Linear regression algorithms; Polychlorinated dibenzo p dioxin (PCDDs); Polychlorinated dibenzo-dioxins; Polychlorinated dibenzo-furans; Real time monitoring; Relative concentration, Organic pollutants, carbon tetrachloride; polychlorinated dibenzodioxin; polychlorinated dibenzofuran; 2,3,7,8 tetrachlorodibenzo para dioxin; benzofuran derivative; chlorinated dibenzofurans; polychlorodibenzo-4-dioxin, algorithm; article; concentration (parameters); data base; gas chromatography; infrared spectroscopy; laser; MIR quantum cascade laser; pollutant; vibration; analogs and derivatives; chemistry; statistical model; vibration, Algorithms; Benzofurans; Carbon Tetrachloride; Linear Models; Spectroscopy, Fourier Transform Infrared; Tetrachlorodibenzodioxin; Vibration
DOI: 10.1016/j.jhazmat.2014.04.004

Citations: 3
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