chemical signature

chemical signature

n.
A unique pattern produced by an analytical instrument, such as a spectrometer, indicating the presence of a particular molecule in a test sample.
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Both fragments had a unique chemical signature that confirmed it was indeed a by-product of the Toba eruption.
If you look at the chemical signature of the remains, it becomes clear that this was a population that knew how to manipulate the soil and harvest from the sea,' says Cat Jarman, who has recently published two papers on data she gleaned from ancient islander's rib fragments.
Could you please explain just how complex it would be to recreate that sarin exactly to the unique chemical signature of the Syrian regime?
Stable isotope ratios AaAaAeA{AaAaAeA} a chemical signature also used by fore scientists AaAaAeA{AaAaAeA} the team measures showed that Lake Bardawil on Egypt north coast is the most important foraging ground for turtles that breed at Alagadi in Kyrenia.
By examining data from the two volcanoes, Jones and his team suggested an alternative: The chemical signature, along with this double-track volcanism as it's called, occurred 3 million years ago when the plates above the hot spot shifted direction, moving north.
While studying the wind transport of water vapor, they found that the vapor's chemical signature gave clues to the type of pollution it came from, suggesting that "there's a lot of potential to use it to improve our understanding of urban air pollution," according to Gabe Bowen, coauthor of the research, which recently appeared in the Proceedings of the National Academy of Sciences.
Marshall is working with her colleague, Craig Marshall, associate professor of geology at KU, to improve the way scientists detect condensed aromatic carbon, thought to be a chemical signature of astrobiology, space.
Biological agents, chemicals that comprise poison gas and the materials found in explosives all give off a chemical signature, he noted.
During their lifetimes, these stars produce elements that contribute to the chemical signature of the universe.
The scientists say the test data in the Railroad Commission's report shows the chemical signature - known as the isotopic analysis - of the Barnett Shale gas is 46.
The biochip utilises specific chemical reactions in combination with plasmonic interferometry, which identifies chemical signature of compounds using light.
Researchers from Cardiff University, led by Jacqui Mulville, examined human bones for a unique chemical signature passed on to the skeletons of those eating seafood.