Abstract
In the presence of hydrogen and under normal electron impact conditions, ions corresponding to lower congeners were produced between chlorinated dibenzofuran or dibenzodioxin molecules and the hydrogen carrier gas by a series of chlorine-hydrogen exchange reactions. The exchange reactions present an interference problem in dioxin/furan isomer specific GC/MS/SIM analysis in which polar columns are usually employed and retention time windows of adjacent congeners overlap with each other.
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