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Molecular characterization of brominated persistent pollutants using extended X-ray absorption fine structure (EXAFS) spectroscopy
Umeå University, Faculty of Science and Technology, Department of Chemistry.
2008 (English)In: Analytical and Bioanalytical Chemistry, ISSN 1618-2642, E-ISSN 1618-2650, Vol. 390, no 3, p. 921-928Article in journal (Refereed) Published
Abstract [en]

X-ray absorption fine structure (EXAFS) spectroscopy spectra were collected for three brominated persistent pollutants: 6-bromo-2,4,5-trichlorophenol (BrTriClP), pentabromophenol (PentaBrP) and 3,3',5,5'-tetrabromobisphenol A (TBBA). The substances were selected to be symmetrical (BrTriClP and TBBA) or asymmetrical (PentaBrP) with respect to the atomic Br positions and to differ in the number of bromine and other halide atoms, as well as their relative positions. The asymmetrical PentaBrP was modelled with special detail as not all bromine atoms have identical coordination environments. The studied substances displayed unique EXAFS spectra, which could be used to determine the molecular structure in fair detail. We conclude that EXAFS spectroscopy is a suitable technique for molecular characterization of the comparatively complex molecules within the class of compounds of brominated organic persistent pollutants. A detailed understanding of the EXAFS spectra of the pure compounds opens up possibilities to study the interactions with soil and sediment matrices by means of EXAFS spectroscopy. Figure Brominated organic persistent pollutants are characterized by EXAFS spectroscopy.

Place, publisher, year, edition, pages
Springer, 2008. Vol. 390, no 3, p. 921-928
Keywords [en]
EXAFS, Brominated, Organohalogens, Molecular structure, TBBA, BFR
National Category
Analytical Chemistry
Identifiers
URN: urn:nbn:se:umu:diva-5957DOI: 10.1007/s00216-007-1721-1ISI: 000252417800017PubMedID: 17999054OAI: oai:DiVA.org:umu-5957DiVA, id: diva2:145625
Note

Tuesday, November 13, 2007

Available from: 2008-01-17 Created: 2008-01-17 Last updated: 2019-07-08Bibliographically approved

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Bergknut, MagnusPersson, Per

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