Sentences with phrase «many organohalogens»

«Our results shows that we still have more to learn about the formation of organohalogens,» concludes Fayolle.

«Finding the organohalogen Freon - 40 near these young, Sun - like stars was surprising,» said Edith Fayolle, a researcher with the Harvard - Smithsonian Center for Astrophysics in Cambridge, Massachusetts in the USA, and lead author of the new paper.

The new ALMA observation is the first detection ever of a stable organohalogen in interstellar space.

This supports the idea that a young planetary system can inherit the chemical composition of its parent star - forming cloud and opens up the possibility that organohalogens could arrive on planets in young systems during planet formation or via comet impacts.

This suggests that astronomers may have had things around the wrong way; rather than indicating the presence of existing life, organohalogens may be an important element in the little - understood chemistry involved in the origin of life.

«Based on our discovery, organohalogens are likely to be a constituent of the so - called «primordial soup», both on the young Earth and on nascent rocky exoplanets.»

Production of organohalogens by microorganisms has to be taken into account for the study of halogen cycling in atmospheric chemistry as well.

Although specific microbial halogenation reactions have been recognized for decades and the link between the dehalogenation of anthropogenic halogenated contaminants in laboratory cultures and contaminated field sites has been well established, only a few studies specifically looked at pristine ecosystems and the genetic potential for microbial degradation of naturally occurring organohalogens, Kappler says.

Volatile organohalogens like chloromethane strongly influence atmospheric chemistry and thereby Earth's climate by causing ozone depletion when released into the atmosphere.

Assumptions that halogens are inert and that most halogenated organic matter in soils is anthropogenic have been challenged by findings of naturally formed organohalogens.

Organohalogens like perchloroethene and trichloroethene are prominent groundwater pollutants due to their industrial use as dry cleaning and degreasing agents and their widespread release into the environment.

Mostly it refers to organohalogens — compounds like DDT that incorporate halogens such as chlorine or bromine into organic molecules — that are naturally nearly nonexistent in mammals.

Specifically, Blum worries about the health impacts of new organohalogens (like Firemaster 550, a popular alternative to pentaPBDE) because its compositional specifics are hidden behind patent laws.

«We can have pounds of these in organohalogens in our consumer products in our homes»

Original Journal Source: E. Roze et al.Prenatal exposure to organohalogens, including brominated flame retardants, influences motor, cognitive, and behavioral performance at school age.

The researchers also note that abundant organohalogens around a young Sun - like analog demonstrates that the organic chemistry present in the interstellar medium involves halogens, which was previously not known.

Gribble, G. W. «Naturally occurring organohalogen compounds — A comprehensive survey.»

Kristin Møller Gabrielsen of the Norwegian University of Science and Technology in Trondheim and colleagues report in the journal Environmental Research that they examined the liver, muscle and kidney tissues taken from seven polar bears killed by Inuit hunters in East Greenland in 2011 and analysed the effect of more than 50 contaminants in plasma samples from Ursus maritimus, to see what effect organohalogen compounds could have on the bears» thyroid systems.

Some well - known (and very hazardous) examples of organohalogens include PCBs, DDT, and CFCs (chlorofluorocarbons)-- all of which are now globally banned by the United Nation's Persistent Organic Pollutants (POPs) treaty.

BFRs and PVC are both organohalogens.