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Oxidation of 4-brom...
Oxidation of 4-bromo-4'-chlorobiphenyl, model species for forming mixed halogenated aromatic compounds
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Hou, Song (författare)
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Dlugogorski, Bogdan Z. (författare)
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Mackie, John C. (författare)
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Kennedy, Eric M. (författare)
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- Jansson, Stina (författare)
- Umeå universitet,Kemiska institutionen
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Altarawneh, Mohammednoor (författare)
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(creator_code:org_t)
- InderScience Publishers, 2017
- 2017
- Engelska.
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Ingår i: International Journal of Environment and Pollution. - : InderScience Publishers. - 0957-4352 .- 1741-5101. ; 61:3-4, s. 243-260
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This contribution reports results from the gas-phase oxidation of 4-bromo-4'-chlorobiphenyl (4,4'-BCB) in order to fathom the formation of toxic species produced during the combustion of mixed halogenated aromatics. In their own right, mixed polybrominated/polychlorinated biphenyls (PXBs) represent a new class of environmental contaminants, recently detected in food and human tissues. Gas chromatography-quadrupole mass spectrometry (GC-QMS), gas chromatography-quadrupole time of flight mass spectrometry (GC-QTOFMS), Fourier transform infrared spectroscopy (FTIR) and ion chromatography (IC) served to analyse the volatile and semi-volatile organic compounds (V/SVOCs), including mixed halogenated dibenzo-p-dioxins and dibenzofurans (PXDD/Fs), and gaseous products including HBr/HCl. The selection of non-ortho substituted PXB as a model species yields a large number of halogenated compounds, including monochloro- and monobromobenzene and higher halogenated benzenes and naphthalenes and derivatives of halogenated benzenes (such as 1-chloro-4-ethynylbenzene). We also detect small amounts of chlorinated and mixed halogenated dibenzofurans. The present study provides insights into the formation of several classes of halogenated and mixed-halogenated pollutants in combustion processes involving both bromine and chlorine sources, such as those of brominated flame retardants and PVC plastics.
Ämnesord
- NATURVETENSKAP -- Kemi -- Analytisk kemi (hsv//swe)
- NATURAL SCIENCES -- Chemical Sciences -- Analytical Chemistry (hsv//eng)
- NATURVETENSKAP -- Geovetenskap och miljövetenskap -- Miljövetenskap (hsv//swe)
- NATURAL SCIENCES -- Earth and Related Environmental Sciences -- Environmental Sciences (hsv//eng)
Nyckelord
- brominated and chlorinated biphenyls
- halogenated VOC and SVOC
- PXBs
- 4-bromo-4'- lorobiphenyl
- halogenated aromatic compounds
- formation mechanisms of trace pollutants
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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