Fine particles, especially condensable particulate matter (CPM) emitted from coal combustion, is one of the hidden trouble to the ecological environment and human health. In this study, CPM and filterable particulate matter (FPM) were sampled in four coal-fired units. The emission concentrations of CPM and FPM, organic fractions in the emitted CPM were obtained. The effects of air pollution control devices (APCDs) on the distribution of polycyclic aromatic hydrocarbons in CPM (C-PAHs) were investigated by analyzing samples from inlets and outlets of APCDs. The concentrations of CPM emitted from the four units were all higher than that of FPM. Organic fractions were dominant in CPM, especially saturated hydrocarbons accounted for a relatively high proportion (49.19–67.47%). The removal effect of the bag filter for C-PAHs was excellent. The emission concentration of C-PAHs was significantly reduced from the low load unit (350 MW) to the high load unit (600 MW). The 4-ring C-PAHs contributed the largest percentage (nearly 80%) in the emission concentrations of C-PAHs from the four units. The concentrations of C-PAHs emitted from coal-fired power units (1.43 and 2.08 μg/Nm³) were higher than that of coal-fired industrial units (0.17 and 1.31 μg/Nm³).

细颗粒，尤其是燃煤燃烧产生的可冷凝颗粒物（CPM），是生态环境和人体健康的隐患之一。在这项研究中，CPM和可过滤颗粒物（FPM）在四个燃煤装置中进行了采样。获得了CPM和FPM的排放浓度，以及所排放的CPM中的有机部分。通过分析来自APCDs入口和出口的样品，研究了空气污染控制设备（APCDs）对CPM（C-PAHs）中多环芳烃分布的影响。这四个单元排放的CPM浓度均高于FPM。有机成分在CPM中占主导地位，尤其是饱和烃占相对较高的比例（49.19-67.47％）。袋式除尘器对C-PAHs的去除效果非常好。C-PAHs的排放浓度从低负荷单元（350 MW）显着降低到高负荷单元（600 MW）。四环C-PAH在四个单元的C-PAHs排放浓度中贡献最大（近80％）。燃煤发电机组排放的C-PAHs浓度（1.43和2.08μg/ Nm³）高于燃煤工业单位（0.17和1.31μg/ Nm ³）。