摘要
2004年冬季对上海市交通干道附近空气中的挥发性有机物进行了连续6天的监测。采用GC-MS定性检出28种物质,芳香烃和烷烃分别占32%和25%。在检出物中有8种属于美国EPA优先控制的有毒有害物质。GC-FID定量表明,芳香烃中含量最高的是苯系物(BTEX)苯、甲苯、乙苯、二甲苯,其中甲苯浓度最高。苯系物的浓度与一氧化碳和二氧化氮的良好相关性说明苯系物的来源与机动车尾气密切相关,而且都受风速和车流量的影响。
Volatile organic compounds（VOCs） in ambient air near traffic road was monitored continuously for six days in winter in Shanghai. 28 kinds of VOCs was qualitatively identified by GC-MS, and aromatic hydrocarbon and alkane occupied 32% and 25% respectively, 8 kinds of VOCs were belong to priority HAPs regulated by U.S.A. Quantitative results by GC-FID showed that BTEX is the main part of aromatic VOCs, and toluene has the largest concentration. The good correlation of BTEX to CO and NO： implied that the source of BTEX is associated with vehicle exhaust emission, and they were all found to be dependent of wind speed and vehicle volume.
出处
《环境科学与管理》
CAS
2006年第1期54-56,共3页
Environmental Science and Management
