Evaluating porewater polycyclic aromatic hydrocarbon-related toxicity at a contaminated sediment site using a spiked field-sediment approach.

Environmental Toxicology and Chemistry
Sharon E HartzellLance T Yonkos

Abstract

Although the complexity of contaminant mixtures in sediments can confound the identification of causative agents of adverse biological response, understanding the contaminant(s) of primary concern at impacted sites is critical to sound environmental management and remediation. In the present study, a stock mixture of 18 polycyclic aromatic hydrocarbon (PAH) compounds was prepared to reflect the variety and relative proportions of PAHs measured in surface sediment samples collected from discrete areas of a historically contaminated industrial estuary. This site-specific PAH stock mixture was spiked into nontoxic in-system and out-of-system field-collected reference sediments in dilution series spanning the range of previously measured total PAH concentrations from the region. Spiked sediments were evaluated in 10-d Leptocheirus plumulosus tests to determine whether toxicity in laboratory-created PAH concentrations was similar to the toxicity found in field-collected samples with equivalent PAH concentrations. The results show that toxicity of contaminated sediments was not explained by PAH exposure, while indicating that toxicity in spiked in-system (fine grain, high total organic carbon [TOC]) and out-of-system (course grain, l...Continue Reading

References

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Aug 1, 2015·Environmental Science & Technology·Jose-J Ortega-CalvoBram Versonnen
Jul 18, 2017·Environmental Science and Pollution Research International·Sharon E HartzellLance T Yonkos

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Citations

Aug 12, 2021·Bulletin of Environmental Contamination and Toxicology·Júlia ArduimPedro José Sanches Filho
Aug 23, 2021·Environmental Research·Krisa CamargoMichael A Unger
Feb 4, 2022·Environmental Science and Pollution Research International·Marco PiconeAnnamaria Volpi Ghirardini

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