Predicting Bioavailability of Sediment-Associated Organic Contaminants for Diporeia spp. and Oligochaetes

Citations Over TimeTop 10% of 2007 papers

Abstract

Biota-sediment accumulation factors (BSAF) were calculated for Diporeia spp. and oligochaete worms exposed to polychlorinated biphenyls (PCBs) and polycyclic aromatic hydrocarbons (PAHs) from field-collected sediment. These data were compared to the contaminant fraction extracted from sediment with Tenax resin using a 24 h extraction. A previous laboratory study suggested a linear relationship between log BSAF and the contaminant fraction rapidly desorbed from sediment. However, the BSAF data in our study did not fit this relationship. Better predictive regressions for both PCBs and PAHs were found when the log of the lipid-normalized organism contaminant concentrations were plotted against the log of the Tenax-extracted organic carbon-normalized sediment contaminant concentration. Regression lines for the two species had the same slope, but the Diporeia intercept was 2.3 times larger. When adjusted for a 6 h Tenax extraction, based on a regression between 6 and 24 h Tenax extractions, data from this study and two other studies that included multiple oligochaete species fit a single predictive regression. The exception included some PAHs that fell below the regression line. Thus, a single relationship generally predicted bioaccumulation across sediments, compound classes, oligochaete species, and among laboratories.

Related Papers

• → Comparison of Tenax Ta and Carbotrap for sampling and analysis of volatile organic compounds in air(1991)113 cited
• → Build-up of artifacts on adsorbents during storage and its effect on passive sampling and gas chromatography-flame ionization detection of low concentrations of volatile organic compounds in air(1994)63 cited
• → Evaluation of tenax-GR adsorbent for the passive sampling of volatile organic compounds at low concentrations(1993)38 cited
• → Retention characteristics of some volatile compounds on Tenax GR(1993)32 cited
• → Determining the reusability of Tenax beads (60–80 mesh) in estimates of bioaccessibility using single-point extractions(2022)1 cited