【摘要】 目的了解柴油机尾气碳烟颗粒冷凝物中有机污染物的化学组成。方法采用毛细管柱气相色谱_质谱联机分析及选择离子检测技术 ,结合超声波溶剂提取和柱层析分离方法。结果检出144种有机化合物及其同分异构体 ,BaP含量为11～27μg/g。结论应尽快改进柴油发动机性能 ,严格控制和降低尾气有害物及碳烟颗粒物排放 ,以消除此类流动污染源对人民身体健康的危害更多还原

【Abstract】 Objective To find out main chemical components of organic pollutants in the diesel exhaust particles. Methods Capillary column gas chromatography-mass spectrometry (GC/MS) and selected ion recording (SIR) coupled with ultrasonic extraction and column chromatographic separation techniques were used. Results 144 kinds of organic compounds and their isomers were found and the concentrations of benzopyrene (BaP) were 11～27 μg/g in the exhaust condensate. Conclusion The results warned people that the quality of diesel engine must be improved immediately and stringent measures against exhaust particles must be taken so as to reduce the harm to human health caused by this kind of pollutants.更多还原