Navigation Links
Gulf oil spill researcher: Bacteria ate some toxins, but worst remain
Date:7/31/2014

TALLAHASSEE, Fla. A Florida State University researcher found that bacteria in the Gulf of Mexico consumed many of the toxic components of the oil released during the Deepwater Horizon spill in the months after the spill, but not the most toxic contaminants.

In two new studies conducted in a deep sea plume, Assistant Professor Olivia Mason found a species of bacteria called Colwellia likely consumed gaseous hydrocarbons and perhaps benzene, toluene, ethylbenzene and xylene compounds that were released as part of the oil spill.

But, her research also showed that bacteria did not consume the most toxic parts of the oil spill in the water column plume or in the oil that settled on the seafloor.

The most toxic contaminants are called polycyclic aromatic hydrocarbons or PAHs. PAHs are a group of semi-volatile organic compounds that are present in crude oil and can cause long-term health problems such as cancer.

"Those PAHs could persist for a long time, particularly if they are buried in the ocean floor where lack of oxygen would slow PAH degradation by microorganisms," Mason said. "They're going to persist in the environment and have deleterious effects on whatever is living in the sediment."

When the Deepwater Horizon spill occurred, more than 4 million barrels of oil spilled into the Gulf of Mexico. Some of that oil has never been accounted for, and thus has unknown environmental and health consequences for the region.

Mason and colleagues investigated the oil deposits on 64 sediment samples in different areas around the oil wellhead.

To understand the functional capacity of the microorganisms to degrade oil, microbial DNA was sequenced in 14 of those samples. Of those 14, seven of the samples were so contaminated with PAHs that they exceeded the U.S. Environmental Protection Agency's water quality benchmarks for aquatic life.


'/>"/>

Contact: Kathleen Haughney
khaughney@fsu.edu
850-644-1489
Florida State University
Source:Eurekalert

Page: 1

Related biology news :

1. Crabs, insects and spiders vulnerable to oil spill, but also resilient
2. University of Houston study shows BP oil spill hurt marshes, but recovery possible
3. Researchers call for a new direction in oil spill research
4. Marine scientists urge government to reassess oil spill response
5. NCEAS researchers offer new ecological model for deep-water oil spills
6. Microbial communities shifted dramatically after Deepwater Horizon spill
7. BP Deepwater Horizon oil spill exacerbated existing environmental problems in Louisiana marshes
8. Spillways can divert sand from river to rebuild wetlands
9. New oil spill dispersant made from ingredients in peanut butter, chocolate, ice cream
10. At least 200,000 tons of oil and gas from Deepwater Horizon spill consumed by gulf bacteria
11. Research, response for future oil spills: Lessons learned from Deepwater Horizon
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/14/2017)... PARIS , June 15, 2017  IBM (NYSE: IBM ... the international tech event dedicated to developing collaboration between startups ... on June 15-17. During the event, nine startups will ... deliver value in various industries. ... in the international market, with a 30 percent increase in ...
(Date:4/24/2017)... -- Janice Kephart , former 9/11 Commission ... LLP (IdSP) , today issues the following statement: ... 6, 2017 Executive Order: Protecting the Nation ... instilled with greater confidence, enabling the reactivation of ... are suspended by until at least July 2017). ...
(Date:4/13/2017)... PUNE, India , April 13, 2017 According ... Identity Proofing, Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication ... by MarketsandMarkets™, the IAM Market is expected to grow from USD 14.30 ... Annual Growth Rate (CAGR) of 17.3%. ... ...
Breaking Biology News(10 mins):
(Date:9/20/2017)... ... September 20, 2017 , ... The award-winning producers behind the ... feature new innovations aimed at helping farmers solve the problem of nitrogen loss. ... Tuesdays at 8:30aET on RFD-TV. Check your local listings for more info. ...
(Date:9/20/2017)... ... September 20, 2017 , ... ... leading global provider of engineering, architecture, project controls, construction management, commissioning and ... today announced the unveiling of the iCON™ brand which represents the collective ...
(Date:9/20/2017)... Worth, Texas (PRWEB) , ... September 20, 2017 , ... ... stem cell therapy succeeded after standard medicine failed. Many of these people had lost ... Progress, Not Regression Free Download (pdf) , “Neil takes ...
(Date:9/19/2017)... ... September 19, 2017 , ... The latest generation ... step of sample prep for metals digestion—the addition of acids and reagents. The ... price. The system is ideal for any laboratory performing their own unique metals ...
Breaking Biology Technology: