TY - JOUR
T1 - A sediment ecotoxicity assessment platform for in situ measures of chemistry, bioaccumulation and toxicity. Part 2
T2 - Integrated application to a shallow estuary
AU - Rosen, Gunther
AU - Bart Chadwick, D.
AU - Allen Burton, G.
AU - Keith Taulbee, W.
AU - Greenberg, Marc S.
AU - Lotufo, Guilherme R.
AU - Reible, Danny D.
N1 - Funding Information:
This research was funded by a grant from the Strategic Environmental Research and Development Program , under Project #ER-1550 . The deployment of the SPME was supported by the Environmental Security Technology Certification Program, under Project #ER-0624. The authors thank David Lampert, Patty Tuminello, Sarah Douglass, Jennifer Podegracz, Kyle Miller, Joel Guerrero, Brad Davidson, Ryan Halonen, Jon Groves, Robert Beltran, Laura Palombi, and Padrick Anderson, for their valuable contributions in the laboratory and/or field. We gratefully acknowledge assistance from Mace Barron and Peggy Harris (EPA Gulf Ecology Division’s Toxicology Laboratory) for use of their facilities, and Mike Singletary and Patty Whittemore, who facilitated access to the site.
PY - 2012/3
Y1 - 2012/3
N2 - A comprehensive, weight-of-evidence based ecological risk assessment approach integrating laboratory and in situ bioaccumulation and toxicity testing, passive sampler devices, hydrological characterization tools, continuous water quality sensing, and multi-phase chemical analyses was evaluated. The test site used to demonstrate the approach was a shallow estuarine wetland where groundwater seepage and elevated organic and inorganic contaminants were of potential concern. Although groundwater was discharging into the surficial sediments, little to no chemical contamination was associated with the infiltrating groundwater. Results from bulk chemistry analysis, toxicity testing, and bioaccumulation, however, suggested possible PAH toxicity at one station, which might have been enhanced by UV photoactivation, explaining the differences between in situ and laboratory amphipod survival. Concurrently deployed PAH bioaccumulation on solid-phase micro-extraction fibers positively correlated (r 2 ≥ 0.977) with in situ PAH bioaccumulation in amphipods, attesting to their utility as biomimetics, and contributing to the overall improved linkage between exposure and effects demonstrated by this approach.
AB - A comprehensive, weight-of-evidence based ecological risk assessment approach integrating laboratory and in situ bioaccumulation and toxicity testing, passive sampler devices, hydrological characterization tools, continuous water quality sensing, and multi-phase chemical analyses was evaluated. The test site used to demonstrate the approach was a shallow estuarine wetland where groundwater seepage and elevated organic and inorganic contaminants were of potential concern. Although groundwater was discharging into the surficial sediments, little to no chemical contamination was associated with the infiltrating groundwater. Results from bulk chemistry analysis, toxicity testing, and bioaccumulation, however, suggested possible PAH toxicity at one station, which might have been enhanced by UV photoactivation, explaining the differences between in situ and laboratory amphipod survival. Concurrently deployed PAH bioaccumulation on solid-phase micro-extraction fibers positively correlated (r 2 ≥ 0.977) with in situ PAH bioaccumulation in amphipods, attesting to their utility as biomimetics, and contributing to the overall improved linkage between exposure and effects demonstrated by this approach.
KW - In situ
KW - Passive samplers
KW - Sediment
KW - Toxicity
KW - Weight-of-evidence
UR - http://www.scopus.com/inward/record.url?scp=84855875179&partnerID=8YFLogxK
U2 - 10.1016/j.envpol.2011.11.013
DO - 10.1016/j.envpol.2011.11.013
M3 - Article
C2 - 22172938
AN - SCOPUS:84855875179
SN - 0269-7491
VL - 162
SP - 457
EP - 465
JO - Environmental Pollution
JF - Environmental Pollution
ER -