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Last updated on April 18, 2014 at 1:21 EDT

Latest PAHs Stories

Evolution Of Cosmic Carbon
2013-05-15 10:50:47

John P. Millis, PhD for redOrbit.com — Your Universe Online In addition to being a key component of life on Earth, carbon is the sixth most abundant element in the Universe. Yet despite its ubiquitous existence in the cosmos, the evolution of carbon in molecules has been difficult to study. Until now. Researchers at NASA´s Ames Research Center have taken archival data to chart how chemicals known as complex polycyclic aromatic hydrocarbons (PAHs) vary in different...

2013-01-23 12:04:25

Residents living near an e-waste recycling site in China face elevated risks of lung cancer, according to a recent study co-authored by Oregon State University researchers. Electronic trash, such as cell phones, computers and TVs, is often collected in dumps in developing countries and crudely incinerated to recover precious metals, including silver, gold, palladium and copper. The process is often primitive, releasing fumes with a range of toxic substances, including polycyclic aromatic...

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2009-12-02 15:20:03

A new study on the smokeless tobacco product called moist snuff "” placed between lip and gum "” has led scientists in Minnesota to urge the tobacco industry to change manufacturing practices to reduce snuff's content of carcinogens. Their study is published online in ACS' monthly journal Chemical Research in Toxicology. It reports that this category of tobacco products contains surprisingly high levels of certain toxic and cancer-causing substances. Called polycyclic aromatic...

2008-02-09 03:00:22

By Chow, Judith C Doraiswamy, Prakash; Watson, John G; Chen, L-W Antony; Ho, Steven Sai Hang; Sodeman, David A ABSTRACT Recent improvements in integrated and continuous PM^sub 2.5^ mass and chemical measurements from the Supersite program and related studies in the past decade are summarized. Analytical capabilities of the measurement methods, including accuracy, precision, interferences, minimum detectable levels, comparability, and data completeness are documented. Upstream denuders...