You are here:
PREDICTING BIOACCUMULATION POTENTIAL: A TEST OF A FUGACITY-BASED MODEL
Citation:
Ferraro, S., H. II, R. Ozretich, AND D. Specht. PREDICTING BIOACCUMULATION POTENTIAL: A TEST OF A FUGACITY-BASED MODEL. U.S. Environmental Protection Agency, Washington, D.C., EPA/600/J-90/113 (NTIS PB90264177).
Description:
Clams (Macoma nasuta) from an unpolluted site in Yaquina Bay, regon were exposed in the laboratory for 28 days to 6 field-contaminated sediments (treatments) which varied widely in concentration of 10 organic pollutants. ean accumulation factors (AF = (concentration in tissue/lipid %/l00)/(concentration in sediment/total organic carbon %/l00)) of 8 neutral organic compounds (DDE [p.p]. 2.2'.3.5'6.pentachlorobiphenyl, 2.3'.4.4'.5-penta-chlorobiphenyl. roclor 1254, pyrene, chrysene, benzo[a]pyrene, benzo[b.(k)]fluoranthene) were homogeneous across treatments. Statistically significant differences were detected between some treatment AFs for DDD [p.p] and benz[a]anthracene, and between some chemicals within treatments (experimentwise a = 0.05). ccumulation factors were less than 2 and less variable in highly polluted, organically enriched sediments (total organic carbon >/ 3.69 = + or =0.044%), but sometimes exceeded 2 in clams exposed to surficial (0-2 cm deep) sediments with low pollutant concentration and low organic carbon content (<\ 0.86 + or - 0.037%). hese results suggest that the AF model may provide reasonable estimates of bioaccumulation potential of hydrophobic neutral organic compounds in organically enriched, polluted sediments.