Hi Craig and all More on this, from the archives:
http://www.planetark.org/dailynewsstory.cfm?newsid=9772 Planet Ark Catalytic convertors contribute to pollution-magazine UK: February 9, 2001 LONDON - Instead of helping to clean up the environment, catalytic converters used on car exhausts are adding to pollution, a science magazine said on Wednesday. Researchers have found metal from converters in remote areas of Greenland proving, they say, that it is a global problem. "It's not just close to the cities and highways," Carlo Barbante, a chemist at the University of Venice, Italy, told New Scientist magazine. Catalytic converters convert pollutant gases into less noxious products. The platinum, palladium and rhodium in the coverters fitted to cars catalyse reactions that convert hydrocarbons, carbon monoxide and nitrogen oxides. Barbante and his team measured concentrations of the metals in ice and snow cores from Greenland dating from 1969 to 1988 and from 1991-1995. After comparing the cores to samples dating back 7,500 years, they found that concentrations of the metals had been increasing since 1976. "Rhodium levels are already 120 times higher than in the 7,500-year-old ice. Palladium and platinum levels have increased 80 and 40-fold respectively," according to the magazine. Barbante said the ratios they uncovered were similar to car exhausts found in another study, which suggests the metals originated from catalytic converters. REUTERS NEWS SERVICE Biofuel at Journey to Forever: http://journeytoforever.org/biofuel.html Please do NOT send "unsubscribe" messages to the list address. To unsubscribe, send an email to: [EMAIL PROTECTED] Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
