Use of Passive Samplers To Mimic Uptake of Polycyclic Aromatic Hydrocarbons by Benthic Polychaetes

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• 作者：Amy E. Vinturella ; Robert M. Burgess ; Brent A. Coull ; Kimberly M. Thompson ; and James P. Shine
• 刊名：Environmental Science & Technology
• 出版年：2004
• 出版时间：February 15, 2004
• 年：2004
• 卷：38
• 期：4
• 页码：1154 - 1160
• 全文大小：100K
• 年卷期：v.38,no.4(February 15, 2004)
• ISSN：1520-5851

文摘

Experiments were conducted to test whether passivesamplers made of low-density polyethylene (polyethylenedevices, or PEDs) can estimate the extent of uptake ofpolycyclic aromatic hydrocarbons (PAHs) by benthicpolychaetes (Nereis virens) in contaminated marine sediments.For a variety of PAHs, PEDs reached 90% equilibriumwith sediment PAHs in 60 days or less. Using 60-daysediment bioaccumulation tests, we have demonstrated asignificant relationship between PAH concentrations inthe polychaetes and the PEDs (R² = 0.67, p = 0.002), withthe PEDs taking up less PAHs than the polychaetes.Because of this relationship, PEDs can potentially be usedin a regulatory context to simulate uptake of bioavailablePAHs in contaminated marine sediments. The PED PAHconcentrations were also used to calculate porewater PAHconcentrations that allowed for the estimation of alinear free-energy relationship between the lipid-waterdistribution coefficient (K_lip) and the octanol-water distributioncoefficient (K_OW) for PAH uptake in marine polychaetes(R² = 0.94, p < 0.0001).