Selective Retention of Non-ortho Substituted Coplanar Chlorinated Biphenyl Congeners on Adsorbents for Column Chromatograhy

E. Storr-Hansen, M. Cleemann, Tommy Licht Cederberg, B. Jansson

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Abstract

By adsorption chromatography on basic alumina, the non-ortho substituted coplanar chlorinated biphenyl (CB) congeners CB-37, CB-81, CB-77, CB-126, and CB-169 were found to be selectively retained when a mixture of 34 CB congeners was eluted by n-hexane. CB-77, CB-126 and 169 show dioxin-like biological activity/toxicity, and are the most toxic CB congeners. The less toxic mono-ortho and di-ortho substituted coplanar CB congeners were not retained to the same degree. On acidic and neutral alumina, the elution patterns were similar to the patterns observed on basic alumina. Florisil did also show elution patterns similar to the basic alumina, while silica was found to be non-selective. The mechanism of retention of non-ortho substituted CB congeners on alumina is discussed.
Original languageEnglish
JournalChemosphere
Volume24
Issue number3
Pages (from-to)323-333
ISSN0045-6535
Publication statusPublished - 1992
Externally publishedYes

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