【摘要】 利用ＤＦＪ－１型五码分级器对３种型号柴油机车排出颗粒物进行分级采样，并对此３型颗粒物进行有机提取物组分分析。结果发现：柴油机排出颗粒物的分散度，＜１．１～２．０μｍ约占总排出颗粒物的６０～８３％，极大部分均属呼吸性尘粒，其有机提取物均可分离为有机酸（Ｆ１）、有机碱（Ｆ２）、脂肪烃（Ｆ３）、多环芳烃（Ｆ４）及极性化合物（Ｆ５）５个组分。其构成比以Ｆ２、Ｆ３、Ｆ５较高，Ｆ１其次，Ｆ４较低。更多还原

【Abstract】 The dispersity of 5 kinds of diesel particles were collected and detected by using high volume air sampler with DFG-1 meter, and 3 kinds of diesel exhaust particles were extracted and analysed. The result showed that 60～83 % diameters of diesel particle were less than 1. 1～ 2. 0μm. Most of them can enter alveolar bronchiole. Each kind of diesel particles was divided into five chemical componets. They are organic aced fraction(F1), organic base fraction(F2), aliphatic hydrocarbon(F3), aromatic hydrocarbon(F4) and polar fraction (F5).更多还原