Details

Autor(en) / Beteiligte

• Kreitinger, Joseph P
• Quinones-Rivera, Antonio
• Neuhauser, Edward F
• Alexander, Martin
• Hawthorne, Steven B

Titel

Supercritical Carbon Dioxide Extraction as a Predictor of Polycyclic Aromtic Hydrocarbon Bioaccumulation and Toxicity by Earthworms in Manufactured-Gas Plant Site Soils

Ist Teil von

• Environmental toxicology and chemistry, 2007-09, Vol.26 (9), p.1809-1809

Erscheinungsjahr

2007

Link zum Volltext

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• Supercritical carbon dioxide extraction as a predictor of polycyclic aromatic hydrocarbons (PAHs) bioaccumulation and toxicity by earthworms in manufactured gas plant (MGP) site soils was studied. When bioaccumulation and toxicity test results were compared from experiments performed with different sediments or soils, essentially no relationship was observed between the total concentration of hydrophobic organic compounds and biological effects. Soil samples were collected from coal gas (CG) and oil gas manufactured-gas plant (MGP) sites that were approximately 50 years old. PCH residues were observed in field-collected worms. PAH uptake in bioassays clearly demonstrated the low availability of PAHs in soils in which the organic carbon was chiefly anthropogenic. A comparison of the rapidly released fraction of PAHs extracted using mild supercritical fluid extraction (SFE) with worm survival indicated that SFE is useful tool for predicting PAH uptake and toxicity to terrestrial worms.