Journal article
Bioaccumulation of per- and polyfluoroalkyl substances by freshwater benthic macroinvertebrates: Impact of species and sediment organic carbon content?
SCIENCE OF THE TOTAL ENVIRONMENT, v 866, 161208
25 Mar 2023
PMID: 36581279
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Per- and polyfluoroalkyl substances (PFAS) in aquatic environments have caused global concern due to their persistence, toxicity, and potential bioaccumulation of some compounds. As an important compartment of the aquatic ecosystem, sediment properties impact PFAS partitioning between aqueous and solid phases, but little is known about the influence of sediment organic carbon content on PFAS bioaccumulation in benthic organisms. In this study, three freshwater benthic macroinvertebrates - worms (Lumbriculus variegatus), mussels (Elliptio complanata) and snails (Physella acuta) - were exposed for 28 days to PFAS spiked synthetic sediment equilibrated with a synthetic surface water. Using microcosms, sediment organic carbon content - 2%, 5% and 8% - was manipulated to assess its impact on PFAS bioaccumulation. Worms were found to have substantially greater PFAS bioaccumulation compared to mussels and snails. The bioaccumulation factors (BAFs) and biota sediment accumulation factors (BSAFs) in worms were both one to two magnitudes higher than in mussels and snails, likely due to different habitat-specific uptake pathways and elimination capacities among species. In these experiments, increasing sediment organic carbon content decreased the bioaccumulation of PFAS to benthic macroinvertebrates. In worms, sediment organic carbon content was hypothesized to impact PFAS bioaccumulation by affecting PFAS partitioning and sediment ingestion rate. Notably, the BSAF values of 8:2 fluorotelomer sulfonic acid (FTS) were the largest among 14 PFAS for all species, suggesting that
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Details
- Title
- Bioaccumulation of per- and polyfluoroalkyl substances by freshwater benthic macroinvertebrates: Impact of species and sediment organic carbon content?
- Publication Details
- SCIENCE OF THE TOTAL ENVIRONMENT, v 866, 161208
- Publisher
- ELSEVIER; AMSTERDAM
- Grant note
- This work was supported by the Strategic Environmental Research and Development Program (SERDP) grant ER19-1032. Oak Ridge National Laboratory is managed by UT -Battelle, LLC, under contract DE-AC05-00OR22725 with the U.S. Department of Energy.
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Drexel University
- Web of Science ID
- WOS:000921448500001
- Scopus ID
- 2-s2.0-85145770079
- Other Identifier
- 991021861315204721
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- Collaboration types
- Domestic collaboration
- Web of Science research areas
- Environmental Sciences