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Polycyclic Aromatic Hydrocarbons (PAHs) and Estrogenic Compounds in Experimental Flue Gas Streams

^a Laboratory of Microbial Ecology and Technology, (LabMET), Faculty of Agricultural and Applied Biological Sciences, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
^b Biosystems Engineering, Ghent University, Coupure Links 653, 9000 Ghent, Belgium
^c Endocrinology, Ghent University Hospital, De Pintelaan 185, 9000 Ghent, Belgium

View larger version (18K): [in a new window]   Fig. 1. Dose response curve for the yeast-based human estrogen receptor (hER) assay to synthetic estrogen 17-ethynylestradiol (EE2) dissolved in dimethylsulfoxide (DMSO) solvent in concentrations of 2.9 to 2950 ng L-1. The response is expressed as a percentage of the mean maximum response elicited by 2950 ng L-1 of EE2 (n = 8). Note the EC50 (effective concentration to cause 50% of the mean maximum estrogenic response) = 200 ± 25 ng L-1.

View larger version (26K): [in a new window]   Fig. 2. Concentration of (A) estrogenic compounds expressed as 17--ethinylestradiol (EE2) equivalent (ng m-3) and (B) total concentration of the 16 USEPA standard polycyclic aromatic hydrocarbons (PAHs) (ng m-3) in flue gas streams from combustion of different materials and the replicates. T1, treatment with copper naphthenate wood preservative; T2, treatment with copper naphthenate and pentachlorophenol wood preservative.

View larger version (16K): [in a new window]   Fig. 3. A scatter diagram showing the 17--ethinylestradiol (EE2) equivalent concentration (ng m-3) against the total concentration of the 16 USEPA standard polycyclic aromatic hydrocarbons (PAHs) (ng m-3) in flue gases from combustion of different material samples and their replicates. , Barbecue charcoal; , wood treated with copper naphthenate wood preservative; , wood treated with copper naphthenate combined with pentachlorophenol wood preservatives; , untreated wood; •, meat; , kitchen waste.