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
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Astronomers from Bonn and Tautenburg in Thuringia (Germany) used the 100-m radio telescope at Effelsberg to observe several galaxy clusters. At the edges of these large accumulations of dark matter, stellar systems (galaxies), hot gas, and charged particles, they found magnetic fields that are exceptionally ordered over distances of many million light years. This makes them the most extended magnetic fields in the universe known so far.
The results will be published on March 22 in the journal „Astronomy & Astrophysics“.
Galaxy clusters are the largest gravitationally bound structures in the universe. With a typical extent of about 10 million light years, i.e. 100 times the...
Researchers at the Goethe University Frankfurt, together with partners from the University of Tübingen in Germany and Queen Mary University as well as Francis Crick Institute from London (UK) have developed a novel technology to decipher the secret ubiquitin code.
Ubiquitin is a small protein that can be linked to other cellular proteins, thereby controlling and modulating their functions. The attachment occurs in many...
In the eternal search for next generation high-efficiency solar cells and LEDs, scientists at Los Alamos National Laboratory and their partners are creating...
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are less stable. Now researchers at the Technical University of Munich (TUM) have, for the first time ever, produced a composite material combining silicon nanosheets and a polymer that is both UV-resistant and easy to process. This brings the scientists a significant step closer to industrial applications like flexible displays and photosensors.
Silicon nanosheets are thin, two-dimensional layers with exceptional optoelectronic properties very similar to those of graphene. Albeit, the nanosheets are...
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to simulate these confined natural conditions in artificial vesicles for the first time. As reported in the academic journal Small, the results are offering better insight into the development of nanoreactors and artificial organelles.
Enzymes behave differently in a test tube compared with the molecular scrum of a living cell. Chemists from the University of Basel have now been able to...
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