[ti:Poisonous Lead Dust a Result of Notre Dame Cathedral Fire][by:shang05.com][00:00.00]更多听力请访问shang05.com[00:01.36]Paris has many old buildings with lead, yet does not have rules about lead dust in public spaces.[00:11.92]The issue has become an important concern after last spring's huge fire at Notre Dame Cathedral.[00:21.92]The fire, in April, released thousands of kilograms of toxic lead dust into the atmosphere in just a few hours.[00:34.92]"When the Notre Dame fire happened, we didn't have any threshold[00:41.20]for what represented dangerous lead levels outdoors," Anne Souyris told the Associated Press.[00:50.04]She is the Paris City Hall deputy mayor in charge of public health.[00:57.76]"It was a wake-up call...the amount of lead that was burned in Notre Dame was unprecedented."[01:06.80]The Associated Press (AP) news agency has found that many countries lack rules[01:13.92]about lead in outdoor, public spaces.[01:18.04]Other historic European capitals such as Rome and London do not have rules for outdoor lead dust levels.[01:29.08]That is also the case for the U.S. Environmental Protection Agency and the World Health Organization.[01:38.80]Poisoning from lead dust can cause permanent loss to mental ability, seizures, coma or death.[01:48.72]Pregnant mothers and young children are at the greatest risk.[01:54.52]Concerns about lead are especially strong in Paris.[01:59.80]Lead is common in many parts of Paris' 19th-century buildings — in roofs, balconies, floors and terraces.[02:12.64]Experts say because Paris is a highly preserved historic city it also is a danger spot for lead.[02:22.84]"Paris is a beautifully preserved city," Souyris said.[02:27.88]"But we realize we have also beautifully preserved its lead."[02:34.36]Neil M. Donahue is a chemistry professor at Carnegie Mellon University in Pittsburgh, Pennsylvania.[02:43.60]"Preservation does make Paris unusual," he said.[02:48.28]"Incineration of one of the most famous roofs in the world may be especially dramatic,[02:56.44]but there is no alchemy in this world. Lead will remain lead forever."[03:04.24]The fire also brought attention, among officials and the public, to the dangers of lead.[03:12.92]In June, Paris' Regional Health Agency advised that all pregnant women[03:19.76]and young children living near the site take a test for lead levels.[03:26.80]The agency said 12 children in the surrounding areas tested positive[03:33.60]for elevated lead levels in their blood since the fire.[03:38.84]None had to be hospitalized or given medication.[03:44.12]One child's lead exposure came from a source other than the cathedral:[03:50.60]the lead balcony of his family's apartment.[03:54.32]It is unlikely the child would have been tested at all had it not been for the fire.[04:03.00]Despite the lead fallout from the fire, experts say tourists[04:08.76]should not change their travel plans to one of the most visited cities in the world.[04:16.72]However, poisonous lead dust remains a problem inside the fire-damaged cathedral.[04:25.56]Aline Magnien is director of the Historic Monuments Research Laboratory.[04:31.60]She recently sent a team of scientists to Notre Dame.[04:36.52]Their goal is to find out how to remove lead[04:40.96]from inside the famous religious building without causing more damage.[04:47.40]"It's a race against the clock," she said. "The lead is a real problem.[04:54.04]The cathedral is exceptionally precious. And we don't have the luxury of time."[05:01.56]I'm John Russell. 更多听力请访问shang05.com