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Benzene polycarboxylic acids : a ubiquitous class of compounds in soils

Title data

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

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER75274
Keywords: mellitic acid; ubiquitous occurrence; black carbon; Terra Preta
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences > Chair Soil Ecology
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Earth Sciences
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 11 Sep 2015 06:32
Last Modified: 11 Sep 2015 06:32
URI: https://eref.uni-bayreuth.de/id/eprint/19080