The aquatic hazard of hydrocarbon liquids and gases and the modulating role of pressure on dissolved gas and oil toxicity
| Autor: | P. Paquin, Christopher J. Fanelli, Dominic M. Di Toro, Joy A. McGrath |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0301 basic medicine
Hydrostatic pressure Acute effect 010501 environmental sciences Aquatic Science Oceanography 01 natural sciences 03 medical and health sciences Hydrostatic Pressure Solubility Oil toxicity 0105 earth and related environmental sciences chemistry.chemical_classification Alkane business.industry Fossil fuel Lipids Pollution Hydrocarbons 030104 developmental biology Hydrocarbon chemistry Environmental chemistry Environmental science Gases business Water Pollutants Chemical Ambient pressure |
| Zdroj: | Marine Pollution Bulletin. 133:930-942 |
| ISSN: | 0025-326X |
| DOI: | 10.1016/j.marpolbul.2018.04.051 |
| Popis: | Hydrostatic pressure enhances gas solubility and potentially alters toxicity and risks of oil and gas releases to deep-sea organisms. This study has two primary objectives. First, the aquatic hazard of dissolved hydrocarbon gases is characterized using results of previously published laboratory and field studies and modeling. The target lipid model (TLM) is used to predict effects at ambient pressure, and results are compared to effect concentrations derived from extrapolation of liquid alkane hazard data. Second, existing literature data are used to quantify and predict pressure effects on toxicity using an extension of the TLM framework. Results indicate elevated pressure mitigates narcosis, particularly for sensitive species. A simple adjustment is proposed to allow TLM-based estimates of acute effect and TLM-derived HC5 values (concentrations intended to provide 95% species protection) for oil or gas constituents to be calculated at depth. Future applications, and opportunities and challenges for providing validation, are discussed. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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