Predicting the biodegradation of target hydrocarbons in the presence of mixed contaminants in soil

Jacqueline L. Stroud, Graeme I. Paton, Kirk T. Semple*

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

The aim of this study was to investigate the prediction of 14C-phenanthrene and 14C-hexadecane biodegradation in the presence of other hydrocarbons in soil using β- and α-cyclodextrin (CD) solutions, respectively. Prediction of the biodegradation of 14C-phenanthrene using the β-CD extraction was robust under single, co-contaminant and multiple contaminant conditions (r2 = 0.92, slope of best fit line = 0.87, intercept = 7.24, n = 84). Prediction of 14C-hexadecane using the α-CD extraction was robust under single and co-contaminant conditions (r2 = 0.92, slope of best fit line = 0.97, intercept = 1.24, n = 60); however, the α-CD could not accurately predict 14C-hexadecane biodegradation in the presence of multiple contaminants. The presence of multiple contaminants enhanced 14C-hexadecane mineralisation, but did not enhance extractability. The results from this study provide further evidence for the application of HPCD extractions for the measurement of microbial accessibility in soil.

Original languageEnglish
Pages (from-to)563-567
Number of pages5
JournalChemosphere
Volume74
Issue number4
DOIs
Publication statusPrint publication - Jan 2009
Externally publishedYes

Keywords

  • Biodegradation
  • Hexadecane
  • HP-α-CD
  • HP-β-CD
  • Phenanthrene

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