摘要
通过对南京市机动车排气污染物的年检监测,表明南京市的汽油车、柴油车、摩托车排气合格率总体呈上升趋势,2002年全市机动车排气监测总合格率为99.9%,比1993年上升了8.6个百分点;汽车尾气达标率也呈上升趋势,2002年达83.8%,比1993年上升了2.6个百分点。对机动车排气路检结果表明,CO超标的车辆占84.4%,CO、HC两项指标都超标的车辆占31.1%。对各类汽油助力车排气监测结果表明,二冲程汽油助力车尾气中CO、HC排放量要高于四冲程汽油助力车的排放量。对各类正三轮摩托车排气抽检结果表明,大部分四冲程正三轮摩托车尾气排放污染物能达标,且排气管无碳烟;二冲程正三轮摩托车尾气中HC值偏高,排气管碳烟明显。
According to the annual monitoring to motor vehicle emission in Nanjing, the total legal rate of vehicle emission is increasing. In 2002, it was 99.9%, 8.6% more than 1993. For cars, it was 83.8%, 2.6% more than 1993. The in-site monitoring indicated that, the rate of motor vehicle which CO in emission were beyond standard was 84.4%, for CO and HC, it was 31.1%. For motorcycles, the CO and HC in emission for two-stroke gasoline engine was more than four- stroke gasoline engine.
出处
《环境监测管理与技术》
2004年第1期23-25,共3页
The Administration and Technique of Environmental Monitoring
