Catalytic converters: source of pollution?
Massachusetts scientists say toxic metals from automotive catalytic
converters have been detected for the first time in U.S. urban air.
The research was conducted by Swedish scientists working in
collaboration with researchers from the Massachusetts Institute of
Technology and the Woods Hole Oceanographic Institution.
The scientists found high concentrations of platinum, palladium,
rhodium and osmium in air over the Boston metropolitan area. Although
the particles are not yet considered a serious health risk, evidence
suggests they potentially could pose a future danger as worldwide car
sales increase from an estimated 50 million in 2000 to more than 140
million in 2050.
Finding ways to "stabilize" those metal particles within the
converters "should be a priority to limit their potential impact,"
says lead researcher Sebastien Rauch of Chalmers University of
Technology in Goteborg, Sweden. Scientists have also detected elevated
concentrations of the elements in Europe, Japan, Australia, Ghana,
China and Greenland.
Catalytic converters reduce emissions of carbon monoxide,
hydrocarbons, nitrogen oxides and other pollutants.
The study is to appear in the Dec. 15 issue of the American Chemical
Society's journal, Environmental Science and Technology.
Copyright 2005 by United Press International
Massachusetts scientists say toxic metals from automotive catalytic
converters have been detected for the first time in U.S. urban air.
The research was conducted by Swedish scientists working in
collaboration with researchers from the Massachusetts Institute of
Technology and the Woods Hole Oceanographic Institution.
The scientists found high concentrations of platinum, palladium,
rhodium and osmium in air over the Boston metropolitan area. Although
the particles are not yet considered a serious health risk, evidence
suggests they potentially could pose a future danger as worldwide car
sales increase from an estimated 50 million in 2000 to more than 140
million in 2050.
Finding ways to "stabilize" those metal particles within the
converters "should be a priority to limit their potential impact,"
says lead researcher Sebastien Rauch of Chalmers University of
Technology in Goteborg, Sweden. Scientists have also detected elevated
concentrations of the elements in Europe, Japan, Australia, Ghana,
China and Greenland.
Catalytic converters reduce emissions of carbon monoxide,
hydrocarbons, nitrogen oxides and other pollutants.
The study is to appear in the Dec. 15 issue of the American Chemical
Society's journal, Environmental Science and Technology.
Copyright 2005 by United Press International