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Benzene polycarboxylic acids : a ubiquitous class of compounds in soils

Titelangaben

Haumaier, Ludwig:
Benzene polycarboxylic acids : a ubiquitous class of compounds in soils.
In: Journal of Plant Nutrition and Soil Science. Bd. 173 (2010) Heft 5 . - S. 727-736.
ISSN 1436-8730
DOI: https://doi.org/10.1002/jpln.201000065

Abstract

Black carbon (BC) occurs ubiquitously in the environment. Its oxidation in the laboratory yields asuite of benzene polycarboxylic acids (BPCAs), suggesting similar oxidation products in soils. Since only for a few soils the occurrence of BPCAs in the free form has been documented, screening for them in a broad range of contrasting soils was conducted. They were extractedfrom soil samples with 0.5 M NaOH and quantified using gas chromatography–mass spectrometry. As expected, BPCAs turned out to be as ubiquitous as BC. They were detected not only inevery soil sample investigated so far, but also in samples from drill cores up to a depth of 10 mand in recently deposited calcareous tufa. The concentrations covered a range similar to that ofsome phenolic acids. The range exceeded those reported for low-molecular-weight aliphaticacids or simple sugars in soils. The distribution of BPCAs in soil profiles indicated a considerablepotential of translocation within, and export from, soil, in particular of benzene hexacarboxylic(mellitic) acid. Mellitic acid may therefore be present in almost any geochemical sample affectedby seepage water from soils. Its high water solubility and strong metal-complexing ability suggestit may be involved in metal-transport processes, at least on geological timescales.

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Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Zusätzliche Informationen: BAYCEER75274
Keywords: mellitic acid; ubiquitous occurrence; black carbon; Terra Preta
Institutionen der Universität: Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften > Lehrstuhl Bodenökologie
Forschungseinrichtungen > Forschungszentren > Bayreuther Zentrum für Ökologie und Umweltforschung - BayCEER
Fakultäten
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften
Fakultäten > Fakultät für Biologie, Chemie und Geowissenschaften > Fachgruppe Geowissenschaften
Forschungseinrichtungen
Forschungseinrichtungen > Forschungszentren
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik
Eingestellt am: 11 Sep 2015 06:32
Letzte Änderung: 11 Sep 2015 06:32
URI: https://eref.uni-bayreuth.de/id/eprint/19080