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Latest Polycyclic aromatic hydrocarbons Stories

2010-12-09 06:00:00

PAH Fingerprints Do Not Identify Pavement Sealants as Source ALEXANDRIA, Va., Dec. 9, 2010 /PRNewswire-USNewswire/ -- More than two years after Austin, TX banned refined tar sealants, there has been no discernable change in either the amount or sources of polycyclic aromatic hydrocarbons in sediment in Austin's waterways. Austin's ban went into effect on January 1, 2006. Results of a study of the ban's impact were just published in a paper titled Polycyclic Aromatic Hydrocarbons...

2009-02-16 21:00:53

Children born in areas with traffic-related pollution may be at greater risk of developing asthma due to womb-acquired genetic changes, U.S. researchers say. Researchers at the University of Cincinnati and Columbia University Mailman School of Public Health say in a study of umbilical cord blood from New York children, researchers discovered evidence of a possible new biomarker -- an epigenetic alteration in the gene ACSL3 -- associated with prenatal exposure to polycyclic aromatic...

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2007-04-11 11:05:50

MOFFETT FIELD, Calif. - NASA scientists have discovered evidence that a mysterious red glow, seen throughout the Milky Way and other galaxies but never on Earth, radiates from extremely fine dust clusters that cause the glow by combining molecular forces that oppose each other. Researchers theorize that the red glow, called the Extended Red Emission (ERE), is due to a very unusual form of charged molecular clusters. Measured in billionths of a meter (billionths of a yard), these tiny clusters...

2007-03-31 03:00:22

By Jacques, Rodrigo J S; Okeke, Benedict C; Bento, Fatima M; Peralba, Maria C R; Camargo, Flvio A O ABSTRACT Anthracene, phenanthrene, and pyrene are polycyclic aromatic hydrocarbon (PAHs) that display both mutagenic and carcinogenic properties. They are recalcitrant to microbial degradation in soil and water due to their complex molecular structure and low solubility in water. This study presents the characterization of an efficient PAH (anthracene, phenanthrene, and pyrene)degrading...

2005-06-22 12:40:00

A joint study by the U.S. Geological Survey and the City of Austin (Texas) has found that runoff from parking lot sealcoat, a black coating used to protect and beautify asphalt, is a previously unrecognized source of polycyclic aromatic hydrocarbons (PAHs). Abraded sealcoat may be an important contributor to PAHs found in U.S. streams, the researchers say. PAHs are known to have adverse health effects on animals, plants and people. The researchers found that PAH levels from runoff obtained...


Word of the Day
attercop
  • A spider.
  • Figuratively, a peevish, testy, ill-natured person.
'Attercop' comes from the Old English 'atorcoppe,' where 'atter' means 'poison, venom' and‎ 'cop' means 'spider.' 'Coppa' is a derivative of 'cop,' top, summit, round head, or 'copp,' cup, vessel, which refers to 'the supposed venomous properties of spiders,' says the OED. 'Copp' is still found in the word 'cobweb.'
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