【摘要】 １９９５ 年全国机动车排放的ＣＯ 和ＮＯｘ 分别为２０００ 万吨和１２０ 万吨， 两者和铅对城市大气污染的分担率分别达８５ ％ 、４０ － ４５ ％ 和８０ － ９０ ％ 。国内应重点开发贵金属—稀土、贵金属—稀土—过渡金属复合催化剂净化汽车尾气， 并健全行政、经济等措施加以控制。更多还原

【Abstract】 In 1995,the CO and NOx discharged from vehicles are 20 million tons and 1 2 million tons.The sharing rate of pollution of CO,NOx and Lead to the urban air are respectively 85%,40-45% and 80-90%.Development priority should be given to precious metals-rare-earth and precious metal-rare-earth-transition elements composite catalyst to purify the vehicle waste-gas.Sound administrative and economic measures should be accordingly adopted.更多还原