国家环境保护总局颁布《车用汽油有害物质控制标准》 ,对苯、芳烃含量进行严格控制 ,同时对烯烃含量也作出了分阶段减少的明确规定 ,规定要求烯烃含量低于 35 %。对金属物质铂、铁、铜、铅等均作出限制。对汽车三元尾气净化器中有害的硫、磷含量也作出相应的规定。值得注意的是 The State Environmental Protection Administration promulgated the “Control Standard for Harmful Substances in Motor Gasoline”, which strictly controls the benzene and aromatics contents. It also clearly stipulates that the olefin content should be reduced in stages, with the requirement that the olefin content should be below 35%. Restrictions on metals such as platinum, iron, copper and lead. Three-car tail gas purifier harmful sulfur, phosphorus content also made the corresponding provisions. It is noteworthy that