NDLI: Dehalogenation of polychlorinated biphenyls and polybrominated diphenyl ethers using a hybrid bioinorganic catalyst

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Journal of Environmental Monitoring Vol - 9 Issue - 3

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Dehalogenation of polychlorinated biphenyls and polybrominated diphenyl ethers using a hybrid bioinorganic catalyst

Content Provider	Royal Society of Chemistry (RSC)
Author	Harrad, Stuart Redwood, Mark D. Robson, Matthew Hazrati, Sadegh Baxter-Plant, Victoria S. Macaskie, Lynne E. Deplanche, Kevin
Copyright Year	2007
Abstract	The environmentally prevalent polybrominated diphenyl ether (PBDE) #47 and polychlorinated biphenyls (PCBs) #28 and #118 were challenged for 24 hours with a novel biomass-supported Pd catalyst (Bio-Pd0). Analysis of the products via GC-MS revealed the Bio-Pd0 to cause the challenged compounds to undergo stepwise dehalogenation with preferential loss of the least sterically hindered halogen atom. A mass balance for PCB #28 showed that it is degraded to three dichlorobiphenyls (33.9%), two monochlorobiphenyls (12%), and biphenyl (30.7%). The remaining mass was starting material. In contrast, while PCB #118 underwent degradation to yield five tetra- and five trichlorinated biphenyls, no less chlorinated products or biphenyl were detected, and the total mass of degraded products was 0.3%. Although the Bio-Pd0 material was developed for treatment of PCBs, a mass balance for PBDE #47 showed that the biocatalyst could prove a potentially useful method for treatment of PBDEs. Specifically, 10% of PBDE #47 was converted to identifiable lower brominated congeners, predominantly the tribrominated PBDE #17 and the dibrominated PBDE #4, 75% remained intact, while 15% of the starting mass was unaccounted for.
Starting Page	314
Ending Page	318
Page Count	5
File Format	HTM / HTML PDF
ISSN	14640325
Volume Number	9
Issue Number	4
Journal	Journal of Environmental Monitoring
DOI	10.1039/b616567b
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Subscribed
Subject Keyword	Polybrominated biphenyl Ether Polybrominated diphenyl ethers Gas chromatography\u2013mass spectrometry Halogen Polychlorinated biphenyl Enzyme
Content Type	Text
Resource Type	Article
Subject	Public Health, Environmental and Occupational Health Management, Monitoring, Policy and Law

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Occurrence of polychlorinated dibenzo-p-dioxins and dibenzofurans (PCDD/Fs), polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs) in Lake Maggiore (Italy and Switzerland)

Validation of the analytical method for the simultaneous determination of selected polybrominated diphenyl ethers, polychlorinated biphenyls and organochlorine pesticides in human blood serum by gas chromatography with micro-electron capture detector

Levels and congener profiles of polybrominated diphenyl ethers (PBDEs) in primipara breast milk from Shenzhen and exposure risk for breast-fed infants

Concentrations of polychlorinated dibenzo-p-dioxins, dibenzofurans, non-ortho polychlorinated biphenyls, and mono-ortho polychlorinated biphenyls in Japanese flounder, with reference to the relationship between body length and concentration

Polybrominated diphenyl ethers (PBDEs) in freshwater mussels and fish from Flanders, Belgium

Accessibility of polybrominated diphenyl ether congeners in aging soil.

Detection of polybrominated diphenyl ethers and polychlorinated biphenyls in fatty tissues by gas chromatography combined with tandem mass spectrometry

Screening of polybrominated diphenyl ethers in blue mussels, marine and freshwater sediments in Denmark

Associations of prenatal exposure to polybrominated diphenyl ethers and polychlorinated biphenyls with long-term gut microbiome structure: a pilot study.

Dehalogenation of polychlorinated biphenyls and polybrominated diphenyl ethers using a hybrid bioinorganic catalyst

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