This study investigates the particle emissions from a diesel vehicle fueled with ultralow sulphur diesel (B0, ULSD) and 5 % biodiesel blend (B5) by a chassis dynamometer test under three driving conditions. Elemental carbon (EC), organic carbon (OC), 30 species of polycyclic aromatic hydrocarbon (PAH) and 10 species of oxygenated PAH (oxy-PAH) were analyzed to quantify the chemical compositions of the collected particulate matter (PM). The emission factors (EFs) of OC were increased with B5 by a range between 39.5 % and 113.7 %, compared with B0. Both fuel blends recorded a trace amount of EC (0.25 mg/kg or less). It was found that the B5 EFs of total PAHs were decreased by a range between 15.2 % and 50.2 % relative to B0. 2- to 3-ring species, the dominant PAHs and oxy-PAHs, were decreased substantially when using B5. However, the results showed that biodiesel blend promoted the emission of 4- and 5-ring oxy-PAHs and 5- to 7-ring PAHs. The application of B5 shifted the composition towards a higher proportion of PAHs with higher molecular weight and more oxy-PAHs. Due to the increased emissions in PAHs with higher toxic equivalent factors (TEFs), the application of B5 resulted in an increase in toxicity expressed in BAP_eq range from 11.3 % to 117.0 %.

本研究通过底盘测功机测试在三种驾驶条件下调查了以超低硫柴油 (B0, ULSD) 和 5% 生物柴油混合物 (B5) 为燃料的柴油车辆的颗粒排放。分析了元素碳 (EC)、有机碳 (OC)、30 种多环芳烃 (PAH) 和 10 种含氧多环芳烃 (oxy-PAH)，以量化收集到的颗粒物 (PM) 的化学成分。与 B0 相比，OC的排放因子 ( EF s) 随 B5 增加了 39.5 % 至 113.7 % 之间的范围。两种燃料混合物都记录了痕量的 EC（0.25 毫克/千克或更少）。发现 B5 EF相对于 B0，总 PAH 的 s 降低了 15.2% 至 50.2%。使用 B5 时，2 至 3 环物质（主要的多环芳烃和氧-多环芳烃）显着减少。然而，结果表明混合生物柴油促进了 4 环和 5 环含氧多环芳烃以及 5 至 7 环多环芳烃的排放。B5 的应用使组成向更高比例的多环芳烃和更高的分子量和更多的含氧多环芳烃转变。由于具有较高毒性当量因子 (TEF) 的 PAH 的排放增加，B5 的应用导致以 BAP _eq范围表示的毒性增加，从 11.3% 到 117.0%。