Accumulation of semivolatile lipophilic micropollutants in thin butter layers

Karl Werner Schramm, Otto Hutzinger

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Thin butter layers (≈ 120μm) were exposed to several semivolatile lipophilic chemicals of different concentrations in a closed room of 25m3. The accumulation coefficients between butter and air can be related to Henry constants between octanol and air suggesting an organic carbon content of 67% for the butter. The elimination rate constant of hexachlorobenzene was five times higher than of tetrachlorobiphenyls in contrast to similar pKow-values. The volatility of the chemicals determine their elimination rate. The equilibrium partition of tetrachlorobiphenyls was not reached within 1000 h. The measured partition values are compared with theoretical values.

Original languageEnglish
Pages (from-to)1729-1742
Number of pages14
JournalChemosphere
Volume19
Issue number10-11
DOIs
StatePublished - 1989
Externally publishedYes

Keywords

  • Air-butter partition
  • Air-octanol partition
  • Henry's law
  • Semivolatile chemicals

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