A complete method for the quantitative analysis of planar, mono, and diortho PCB's, polychlorinated dibenzo-dioxins, and furans in environmental samples
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A novel method is presented for the separation and quantitative determination of planar (non-ortho), mono-ortho, di-ortho PCB's, polychlorinated dibenzo-dioxins (PCDD's) and dibenzo-furans (PCDF's) in environmental samples. The procedure, which combines the advantages of acid-silica and alumina cleanup is then complemented by the separation, of the targeted analytes, by selective elution from an AX-21 Activated Charcoal/Silca gel cromatographic column based on the 'relative planarity' of the molecules. The protocol allows for an independent estimate of the compounds responsible for more than 99% of the 'dioxin-like' toxicity by analizing four different fractions using high resolution gas chromatography with electron capture detection and isotopic dilution high resolution gas chromatography/high resolution mass spectrometry. The procedure allows the selective determination of AHH active PCB's, Planar PCB's, Dioxins and Furans at the parts per tillion levels.
author list (cited authors)
Gardinali, P. R., Wade, T. L., Chambers, L., & Brooks, J. M.