Though these samples were clean, the sample size was small and more research is necessary before the full picture can be seen, said Ron Kendall, director of The Institute of Environmental and Human Health (TIEHH).
“Our detection limits would have detected selected polycyclic aromatic hydrocarbons (PAHs) had they been there, even at very low levels,” Kendall said. “Everyone should realize the sample size was extremely small and that these data represent just a snapshot of time and space. We believe sampling and analyses should continue, and that independent science-based research needs to continue.”
Scientists are concerned about PAHs because some of them are known carcinogens.
Producers with the morning news program asked TIEHH researchers to test the seafood samples prior to the federal government’s opening of waters to fishing on Monday. Reporter Matt Gutman sent the samples from Bastian Bay, La, where he is reporting.
“We collected the samples Monday in Bastian Bay,” Gutman said. “It is an area where we've found oil on the sediment. We filmed it all, including the bagging. The fishermen used a net, but found no evidence of oil directly on any of the samples.”
Gutman’s samples included shrimp, of which nine were tested from three separate locations, four oysters, two bait fish, a flounder and a speckled trout. They were shipped on ice overnight to the institute on Tuesday and Wednesday, where they were received in excellent condition and smelled fresh before processing.
Once tissues were extracted, scientists analyzed them using gas chromatography with mass spectrometry, said Todd Anderson, an environmental chemist at the institute. The process is used to determine substances within a specific test sample, and is widely regarded as the gold standard for forensic substance identification.
“We were particularly interested in polycyclic aromatic hydrocarbons, some of which can be carcinogenic,” Anderson said. “The analytical results revealed that the PAHs we analyzed for were below detection limits of our instrumentation, and far below any levels of concern as regulated by the U.S. Food and Drug Administration.”
Trace Analysis Inc. of Lubbock, Texas, a certified laboratory in Texas and Louisiana, assisted with the analysis.
This project took five days to complete and was done without support from BP or the United States Federal Government.Watch his interview here: http://www.youtube.com/watch?v=_tTUeo8qNwI
| Newswise Science News
The genes are not to blame
20.07.2018 | Technische Universität München
Targeting headaches and tumors with nano-submarines
20.07.2018 | Universitätsmedizin der Johannes Gutenberg-Universität Mainz
A new manufacturing technique uses a process similar to newspaper printing to form smoother and more flexible metals for making ultrafast electronic devices.
The low-cost process, developed by Purdue University researchers, combines tools already used in industry for manufacturing metals on a large scale, but uses...
For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.
To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...
For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.
Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...
Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.
A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...
Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.
"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....
13.07.2018 | Event News
12.07.2018 | Event News
03.07.2018 | Event News
20.07.2018 | Power and Electrical Engineering
20.07.2018 | Information Technology
20.07.2018 | Materials Sciences