Abstract
The gas phase infrared spectra of biphenyl and 209 polychlorinated biphenyls (PCB) are observed; 30 are presented in graphical form so that their uniqueness can be appreciated. The spectra were observed with a gas chromatograph linked via a light pipe with a Fourier transform infrared spectrometer. Unequivocal library matches (with match factors >990 in 1000) can be performed with 50 ng of a congener injected into the chromatograph. Quantitation with the technique was briefly investigated with 2,2′,5,5′-tetrachlorobiphenyl (BZ no. 52). Selective wavelength chromatograms of the most intense absorption (1457cm−1) were integrated. Septuplicate injections showed that 20 ng of the compound could be determined with ±4% precision. The resolution of the spectrometer was sufficient to distinguish between the 13C-labelled trichlorobiphenyl and the unlabelled material, indicating the possibility of internal or surrogate standardization of PCB analysis.
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Bush, B., Barnard, E.L. Gas phase infrared spectra of 209 polychlorinated biphenyl congeners using gas chromatography with Fourier transform infrared detection: Internal standardization with a 13C-labelled congener. Arch. Environ. Contam. Toxicol. 29, 322–326 (1995). https://doi.org/10.1007/BF00212496
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DOI: https://doi.org/10.1007/BF00212496