Tetrachlorodibenzofurans - gas chromatographic and mass spectrometric characteristics

D. S. Waddell; R. K. Boyd; H. S. McKinnon; L. Safe; S. Safe; B. G. Chittim

doi:10.1016/0045-6535(87)90144-5

Tetrachlorodibenzofurans - gas chromatographic and mass spectrometric characteristics

D. S. Waddell, R. K. Boyd, H. S. McKinnon, L. Safe, S. Safe, B. G. Chittim

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Abstract

All isomers of tetrachlorodibenzofuran (with the exception of 1,2,8,9 - TCDF) were unambiguously synthesized via the base-catalyzed cyclization of the appropriate hydroxy-PCB precursors. The standards were found to have a mean purity in excess of 94%. Chromatographic characterization of the TCDF's on a 30m DB5 column and a 60m SP2331 column showed excellent agreement with previous qualitative assignments. The current for TCDF molecular ions was found to maximize in the 60 - 70 eV range. Considerable variability in the mass spectrometric response factors for TCDF molecular ions relative to the 2,3,7,8 isomer has been demonstrated, with values ranging from 0.42 to 2.9.

Original language	English (US)
Pages (from-to)	1655-1660
Number of pages	6
Journal	Chemosphere
Volume	16
Issue number	8-9
DOIs	https://doi.org/10.1016/0045-6535(87)90144-5
State	Published - 1987

ASJC Scopus subject areas

Environmental Engineering
General Chemistry
Environmental Chemistry
Pollution
Public Health, Environmental and Occupational Health
Health, Toxicology and Mutagenesis

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10.1016/0045-6535(87)90144-5

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title = "Tetrachlorodibenzofurans - gas chromatographic and mass spectrometric characteristics",

abstract = "All isomers of tetrachlorodibenzofuran (with the exception of 1,2,8,9 - TCDF) were unambiguously synthesized via the base-catalyzed cyclization of the appropriate hydroxy-PCB precursors. The standards were found to have a mean purity in excess of 94%. Chromatographic characterization of the TCDF's on a 30m DB5 column and a 60m SP2331 column showed excellent agreement with previous qualitative assignments. The current for TCDF molecular ions was found to maximize in the 60 - 70 eV range. Considerable variability in the mass spectrometric response factors for TCDF molecular ions relative to the 2,3,7,8 isomer has been demonstrated, with values ranging from 0.42 to 2.9.",

author = "Waddell, {D. S.} and Boyd, {R. K.} and McKinnon, {H. S.} and L. Safe and S. Safe and Chittim, {B. G.}",

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doi = "10.1016/0045-6535(87)90144-5",

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pages = "1655--1660",

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T1 - Tetrachlorodibenzofurans - gas chromatographic and mass spectrometric characteristics

AU - Waddell, D. S.

AU - Boyd, R. K.

AU - McKinnon, H. S.

AU - Safe, L.

AU - Safe, S.

AU - Chittim, B. G.

PY - 1987

Y1 - 1987

N2 - All isomers of tetrachlorodibenzofuran (with the exception of 1,2,8,9 - TCDF) were unambiguously synthesized via the base-catalyzed cyclization of the appropriate hydroxy-PCB precursors. The standards were found to have a mean purity in excess of 94%. Chromatographic characterization of the TCDF's on a 30m DB5 column and a 60m SP2331 column showed excellent agreement with previous qualitative assignments. The current for TCDF molecular ions was found to maximize in the 60 - 70 eV range. Considerable variability in the mass spectrometric response factors for TCDF molecular ions relative to the 2,3,7,8 isomer has been demonstrated, with values ranging from 0.42 to 2.9.

AB - All isomers of tetrachlorodibenzofuran (with the exception of 1,2,8,9 - TCDF) were unambiguously synthesized via the base-catalyzed cyclization of the appropriate hydroxy-PCB precursors. The standards were found to have a mean purity in excess of 94%. Chromatographic characterization of the TCDF's on a 30m DB5 column and a 60m SP2331 column showed excellent agreement with previous qualitative assignments. The current for TCDF molecular ions was found to maximize in the 60 - 70 eV range. Considerable variability in the mass spectrometric response factors for TCDF molecular ions relative to the 2,3,7,8 isomer has been demonstrated, with values ranging from 0.42 to 2.9.

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Tetrachlorodibenzofurans - gas chromatographic and mass spectrometric characteristics

Abstract

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