Photochemical Degradation of Chloro-biphenyls (PCBs)

Hutzinger, O.; Safe, Stephen; Zitko, V.

doi:10.1289/ehp.720115

Cited by 20 publications

(10 citation statements)

References 9 publications

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“…Trace amounts of hexachlorobenzene, the first major peak in the chromatogram, are known to be present in the gull lipid, but the large amount evident here may well be the result of breakdown of other residues during perchlorination. Unfortunately, the perchlorination procedure forms thermal decomposition products of perchloro DDE, evident as the second and third major peaks in the chromatogram, and the reaction is not quantitative (Hutzinger et al, 1972).…”

Section: Resultsmentioning

confidence: 99%

Mass spectral confirmation and analysis by the Hall detector of mirex and photomirex in Herring Gulls from Lake Ontario

Hallett¹,

Norstrom²,

Onuska³

et al. 1976

J. Agric. Food Chem.

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decane (photomirex), were discovered in the whole body lipid of Herring Gulls from Pigeon Island, Lake Ontario. PCBs, which were evident in high concentrations, coeluted with Mirex and photomirex in residue cleanup procedures, and interfered with their determination by electron-capture gas chromatography (EC-GC) using standard analytical columns. Samples were perchlorinated to remove this interference, and structures were confirmed by gas chromatography /mass spectrometry (GC/MS). The Hall electrolytic conductivity detector was shown to be useful as a specific detector to monitor residues of Mirex and photomirex in the presence of high PCB interference. Eggs of Herring Gulls proved to be useful as indicators of these compounds in Lake Ontario.

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Section: Resultsmentioning

confidence: 99%

Mass spectral confirmation and analysis by the Hall detector of mirex and photomirex in Herring Gulls from Lake Ontario

Hallett¹,

Norstrom²,

Onuska³

et al. 1976

J. Agric. Food Chem.

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“…The present method of choice for PCDF analysis involves column chromatography cleanup followed by high-resolution gas chromatography (GC) and quantitation by mass spectrometry (MS) (9). Comparison of the retention times using highresolution GC with authentic standard has been used for qualitative analysis; however, the number of synthetic standards is limited in comparison to the number of potential isomers (10).…”

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confidence: 99%

Radioimmunoassay for quantitation of 2,3,7,8-tetrachlorodibenzofuran

Luster¹,

Albro²,

Chae³

et al. 1980

Anal. Chem.

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A radioimmunoassay is described for the determination of 2,3,7,8-tetrachiorodibenrofuran (TCDF) in commercial preparations of polychlorinated biphenyls (PCBs) as well as environmental samples including animal tlswes. A feature of the assay method is the use of nonionic detergent to solubilize the hydrophobic dibenzofurans in a manner permitting their binding to antibodies. The detection limits of the assay range between 20 pg and 4.0 ng of 2,3,7,8-TCDF. Extensive cross-reactivity studies indicated that the antiserum was fairly specific for TCDF although some cross-reactivity was found to structurally similar compounds. Values for TCDF in various Arociors and animal tissues by radioimmunoassay correlated with those obtained by gas chromatography-mass spectrometry analysis. The radioimmunoassay is applicable to screening samples in order to minimize the demand for mass spectrometric screening and should be simple enough to be performed in most clinical laboratories.

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“…In the environment, photolysis seems to be the most significant chemical degradation process. Sunlight usually produces dechlorination and /or hydroxyl substitution (71,72). When volatilized, the efficiency of the photolytic degradation increases and the PCB half-lives are dependent on the degree of chlorination.…”

Section: Pcb Degradation Destruction and Decontamination Processesmentioning

confidence: 99%

Mass spectrometry in the analysis of polychlorinated biphenyls

Facchetti

1993

Mass Spectrometry Reviews

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Photochemical Degradation of Chloro-biphenyls (PCBs)

Cited by 20 publications

References 9 publications

Mass spectral confirmation and analysis by the Hall detector of mirex and photomirex in Herring Gulls from Lake Ontario

Mass spectral confirmation and analysis by the Hall detector of mirex and photomirex in Herring Gulls from Lake Ontario

Radioimmunoassay for quantitation of 2,3,7,8-tetrachlorodibenzofuran

Mass spectrometry in the analysis of polychlorinated biphenyls

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