You are here:
INFLUENCES OF SEDIMENTARY ORGANIC MATTER QUALITY ON THE BIOACCUMULATION OF 4-NONYLPHENOL BY ESTUARINE AMPHIPODS
Citation:
Hecht, S. A., J. S. Gunnarsson, B L. Boese, J O. Lamberson, C. Schaffern, W. Giger, AND P. C. Jepson. INFLUENCES OF SEDIMENTARY ORGANIC MATTER QUALITY ON THE BIOACCUMULATION OF 4-NONYLPHENOL BY ESTUARINE AMPHIPODS. ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY. SETAC Press, Pensacola, FL, 23(4):865-873, (2004).
Description:
Nonylphenol (NP) is a moderately persistent, hydrophobic chemical (Log Kow 4.5) with endocrine disrupting and acute narcotic effects in aquatic biota. There is concern about the ultimate fate of NP in aquatic ecosystems and potential for bioaccumulation by benthic biota from the sediment with the potential for further transfer to higher trophic levels. Our goals were (1) to determine if amphipods bioaccumulate significant amounts of NP from sediment (2) to determine if TOC quantity and TOC nutritional quality influence NP bioaccumulation by amphipods. Estuarine sediment was spiked with 14C-NP and enriched with two types of organic matter of differing nutritional qualities. NP bioaccumulation was measured in three amphipod species (Eohaustorius estuarius, Grandidierella japonica, and Corophium salmonis) following 16 days of exposure. Amphipod accumulation of NP was inversely proportional to TOC quantity, but unaffected by TOC nutritional quality. There were significant differences in the accumulation patterns between the three amphipod species. Mean accumulation factors (BSAF) ranged from 8.1?33.9 in E. estuarius, 4.6-17.2 in G. japonica, and averaged 7.13 in Corophium salmonis males and 16.0 in females. Estuarine amphipods are potential dietary sources of NP to higher trophic levels.