Abstract：
:Passive samplers are used to measure dissolved nonionic organic contaminants (NOCs) in environmental media. More recently, reverse polyethylene samplers (RePES) have been used with spiked sediments to recreate interstitial water exposure concentrations and observed toxicity. In the present study, RePES were used with field contaminated sediments. The RePES was not capable of recreating the pattern of toxicity with the amphipod and mysid observed with intact field sediments. Decreased survival in the RePES exposures as compared to the whole sediment exposures was most likely caused by an overexposure to NOCs due to a lack of surrogate black carbon in the RePES system. As an alternative, aqueous phase studies were performed in which polyethylene was allowed to equilibrate with slurries of intact sediments for 3 weeks. Three weeks was found to be an insufficient amount of time for the polyethylene to equilibrate with the sediment. An additional study demonstrated 3 months was sufficient for lower contaminant concentrations, but might not be an adequate amount of time for more highly contaminated sediments. The aqueous phase transfer approach may be useful if equilibration is sufficiently long, although this length of time may be impractical for use in certain applications, such as toxicity identification evaluations (TIEs).
journal_name
Chemospherejournal_title
Chemosphereauthors
Perron MM,Burgess RM,Ho KT,Pelletier MC,Friedman CL,Cantwell MG,Shine JPdoi
10.1016/j.chemosphere.2010.12.076subject
Has Abstractpub_date
2011-04-01 00:00:00pages
247-54issue
3eissn
0045-6535issn
1879-1298pii
S0045-6535(10)01496-7journal_volume
83pub_type
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