BENZO[a]PYENE AND ZINC SOLUBILIZATION BY DIGESTIVE FLUIDS OF BENTHIC INVERTEBRATES-A CROSS-PHYLETIC STUDY

摘要

Contaminant bioavailability via digestive exposure was examined for 18 species of marine benthic invertebrates, using incubation of digestive fluids with sediments that were spiked with either radiolabeled benzo[a]-pyrene (BaP)or zinc. Interphyletic trends in contaminant solubilization were compared with measures of digestive biochemistry, including enzyme activities, surfac- tancy, pH, and fluid phase organic carbon, amino acids, and lipids. Contaminant solubilization ranged from values equal to that of a seawater control to as much as an order of magnitude higher but were lower than those abtained with commonly used chemical extractants.