Distribution of Polycyclic Aromatic Hydrocarbons in Sunken Oils in the Presence of Chemical Dispersant and Sediment

Gao, Yali; Xiong, Dangsheng; Qi, Zhixin; Li, Xishan; Ju, Zhonglei; Zhuang, Xueqiang

doi:10.3390/jmse7090282

Cited by 20 publications

(8 citation statements)

References 53 publications

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“…The growing global production and consumption of crude oil and its refined products have generated public concern about the effects of potential oil spills on marine ecosystems. Oil slicks from an accidental oil spill can reach coastal habitats through the action of wind, waves, and currents [1][2][3], and subsequently cause disastrous impacts on coastal zone and human activities. For instance, the 2010 Xingang Port oil spill in Dalian (China) caused more than 1500 t crude oil spilled into the Yellow Sea, resulting in severe losses of marine aquaculture in Liaoning Province.…”

Section: Introductionmentioning

confidence: 99%

Antioxidant Response and Oxidative Stress in the Respiratory Tree of Sea Cucumber (Apostichopus japonicus) Following Exposure to Crude Oil and Chemical Dispersant

Liao

et al. 2020

JMSE

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Sea cucumber (Apostichopus japonicus) is mainly cultured in the coastal zone, where it is easily threatened by accidental oil spills. Chemical dispersant is one of the efficient oil spill responses for mitigating the overall environmental damage of oil spills. However, the impact of crude oil and chemical dispersants on sea cucumber is less well known. Hence, the present study focused on exploring the antioxidant response and oxidative stress in the respiratory tree of sea cucumber following exposure to GM-2 chemical dispersant (DISP), water-accommodated fractions (WAF), and chemically enhanced WAF (CEWAF) of Oman crude oil for 24 h. Results manifested that WAF exposure caused a significant increase in the reactive oxygen species (ROS) level (5.29 ± 0.30 AU·mgprot−1), and the effect was much more obvious in CEWAF treatment (5.73 ± 0.16 AU·mgprot−1). Total antioxidant capacity (T-AOC), as an important biomarker of the antioxidant defense capacity, showed an increasing trend following WAF exposure (0.95 ± 0.12 U·mgprot−1) while a significant reduction in T-AOC was observed following CEWAF exposure (0.23 ± 0.13 U·mgprot−1). Moreover, we also evaluated the oxidative damage of the macromolecules (DNA, protein, and lipid), and our results revealed that the presence of chemical dispersant enhanced oxidative damage caused by crude oil to sea cucumber.

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Section: Introductionmentioning

confidence: 99%

Antioxidant Response and Oxidative Stress in the Respiratory Tree of Sea Cucumber (Apostichopus japonicus) Following Exposure to Crude Oil and Chemical Dispersant

Liao

et al. 2020

JMSE

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“…PAH bioaccumulation potential is also understood to be higher in sedentary filter-feeding organisms (Honda and Suzuki 2020). Gao et al (2019) demonstrated that the interaction of suspended sediment with dispersant promotes the sinking of oil thereby facilitating entrainment in sediments, the content of PAHs increasing with increasing dispersants-to-oil ratio. Few studies available (e.g., Falk-Petersen et al 2007;Nørregaard et al 2015) indicate that PAH metabolism may be inhibited in organisms exposed to dispersant-oil mixtures to some degree, potentially facilitating trophic bioaccumulation.…”

Section: Bioaccumulation Of Contaminantsmentioning

confidence: 99%

The effects of oil spill dispersant use on marine birds: a review of scientific literature and identification of information gaps

Osborne¹,

Willie

O’Hara

2022

Environ. Rev.

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Dispersants, a class of chemical spill-treating agents used to treat oil spills, are commonly used globally as an alternative response measure. Applying dispersants to an oil slick, shortly after the spill has occurred, can protect shoreline environments and sea surface-dwelling animals, such as some marine bird species, limiting individuals or local populations from the consequences of coming into contact with large quantities of oil. However, this benefit comes with the cost of increasing oil exposure risk to marine biota that spend time in the water column. It is generally believed that the benefits of dispersant use outweigh the costs under most circumstances. However, it is rarely acknowledged that the use of dispersants may have negative impacts on marine biota at the individual or local population level, including marine birds. In Canada, Corexit EC9500A, a regulated dispersant, is being proposed for expanded use beyond treating spills from an offshore oil and gas facility. To understand what the potential impacts from dispersant use are to marine birds, we conducted a literature review to identify the direct and indirect effects of their use. We also provide oil spill responders with a Pathway of Effects conceptual model, a tool for understanding the interactions between dispersants, marine birds, and their environment in order to support a holistic consideration as part of the oil spill response decision-making process. Fundamental uncertainties remain, however, and if left unaccounted for in the decision-making process, they may compromise the appropriateness of spill response approaches and outcomes. We recommend that oil spill responders incorporate the known benefits and costs of dispersant use on marine birds into a decision-making framework such as a Net Environmental Benefits Analyses (NEBA) and with consideration of the Pathway of Effects concept models provided. These recommendations are particularly relevant where a decision-making framework such as NEBA is becoming a more standardized component of the response process. Additionally, greater investment in lab and field-based research, and field observations through monitoring, is required to address existing decision-making uncertainties and provide information gap closure.

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“…3 Via whatever approach, the sunken oil is so difficult and expensive to nd and clean up that it further contaminates sediments and presents a toxic risk to benthic species. 4,5 OPAs can be generally classied as oil-mineral aggregates (OMAs) and marine oil snow (MOS). OMAs specically refer to micro-aggregates (typically <50 mm) that are formed by dispersed oil droplets and suspended mineral particles such as kaolinite, quartz and montmorillonite.…”

Section: Introductionmentioning

confidence: 99%

“…3 Via whatever approach, the sunken oil is so difficult and expensive to find and clean up that it further contaminates sediments and presents a toxic risk to benthic species. 4,5…”

Section: Introductionmentioning

confidence: 99%

Formation of oil-particle aggregates in the presence of marine algae

Wang

et al. 2023

Environ. Sci.: Processes Impacts

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Distribution of Polycyclic Aromatic Hydrocarbons in Sunken Oils in the Presence of Chemical Dispersant and Sediment

Cited by 20 publications

References 53 publications

Antioxidant Response and Oxidative Stress in the Respiratory Tree of Sea Cucumber (Apostichopus japonicus) Following Exposure to Crude Oil and Chemical Dispersant

Antioxidant Response and Oxidative Stress in the Respiratory Tree of Sea Cucumber (Apostichopus japonicus) Following Exposure to Crude Oil and Chemical Dispersant

The effects of oil spill dispersant use on marine birds: a review of scientific literature and identification of information gaps

Formation of oil-particle aggregates in the presence of marine algae

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