Natural abiotic formation of furans in soil

• Verfasst von: Huber, Stefan [VerfasserIn]
• Verfasst von: Wunderlich, Steffen [VerfasserIn]
• Verfasst von: Schöler, Heinz Friedrich [VerfasserIn]
• Verfasst von: Williams, J. [VerfasserIn]
• Titel: Natural abiotic formation of furans in soil
• Verf.angabe: Stefan G. Huber, S. Wunderlich, Heinz F. Schöler, J. Williams
• E-Jahr: 2010
• Jahr: 1 August 2010
• Umfang: 6 S.
• Fussnoten: Published online: 9 July 2010 ; Gesehen am 23.05.2023
• Titel Quelle: Enthalten in: Environmental science & technology
• Ort Quelle: Columbus, Ohio : American Chemical Society, 1967
• Jahr Quelle: 2010
• Band/Heft Quelle: 44(2010), 15 vom: Aug., Seite 5799-5804
• ISSN Quelle: 1520-5851
• DOI: doi:10.1021/es100704g
• Datenträger: Online-Ressource
• Sprache: eng
• Bibliogr. Hinweis: Erscheint auch als : Druck-Ausgabe: Natural abiotic formation of furans in soil. - 2010
• K10plus-PPN: 1846028825

Abstract

Furan and its derivates are a potentially important, and little studied, class of volatile organic compounds of relevance to atmospheric chemistry. The emission of these reactive compounds has been attributed previously to biomass burning processes and biogenic sources. This paper investigates the natural abiotic formation of furans in soils, induced by the oxidation of organic matter by iron(III) and hydrogen peroxide. Several model compounds like catechol, substituted catechols, and phenols as well as different organic-rich soil samples were investigated for the release of furans. The measurements were performed with a purge and trap GC/MS system and the influence of hydrogen peroxide, reaction temperature, iron(III), pH, and reaction time on furan yield was determined. The optimal reaction turnover obtained with catechol was 2.33 μg of furan from 0.36 mg of carbon. Results presented in this paper show that a cleavage of catechol into a C2- and a C4-fragment occurs, in which the C4-fragment forms furan by integrating an oxygen atom stemming from H2O2. Furthermore, phenols could be transformed into catecholic structures under these Fenton-like conditions and also display the formation of furans. In conclusion, catalytic amounts of iron(III), the presence of hydrogen peroxide, and acidic conditions can be seen as the most important parameters required for an optimized furan formation.