A study scheduled for publication in the December 15 issue of theAmerican Chemical Society's
journal,Environmental Science and Technology
, shows that for the first time, toxic metals emitted from automotive catalytic converters have been detected in urban air in the
The researchers found high concentrations of platinum, palladium, rhodium and osmium in air over the
Finding ways to "stabilise" these metal particles within the converters "should be a priority to limit their potential impact," says lead researcher Sebastien Rauch, Ph.D., of
In addition to the
, where catalytic converters were first introduced, scientists have also detected elevated concentrations of these elements in Europe,
. Catalytic converters reduce emissions of carbon monoxide, hydrocarbons, nitrogen oxides and other pollutants.