From Paul Ziemann
“The important point is that secondary organic aerosols are highly oxidized and hydrophilic. Consequently, SOA-containing particles are able to take up water more readily and to act as nuclei for cloud formation."
Paul J. Ziemann, an atmospheric chemist, on how SOAs – secondary organic aerosols -- are thought to be a prime candidate for causing at least some of the health effects that led to current EPA air pollution standards for fine particulate matter.
CHEMICAL AND ENGINEERING NEWS
From David Eastmond
REACH will invigorate the growing field of in silico toxicology, the use of computer models to predict the health and environmental impacts of new chemicals, says Dave Eastmond, a toxicologist at the University of California, Riverside. The new information on thousands of chemicals will allow scientists to look for patterns that relate certain chemical structures to biological outcomes, such as cancer and skin disease, or ecological effects. “This will improve the quality of existing databases,” Eastmond says, including those with proprietary information, as well as public databases. It’ll also improve researchers’ ability to predict the behavior of new substances, he adds.
ENVIRONMENTAL SCIENCE & TECHNOLOGY