������������学术论文Academicpapers粘接化学化工资源机动车尾气中的多环芳烃类污染物分析及监测技术创新韩莉（唐山市机动车污染防治中心，河北唐山063000）摘要：对机动车尾气污染物中危害性最大的多环芳烃类（PAHs）进行了表征和量化。采集了车辆在加速、减速、匀速和怠速等不同行驶工况下的尾气样品，通过反相高效液相色谱法（HPLC）进行成分定量分析。结果表明，气相中较低分子量（2~3环）的多环芳烃浓度高于固相中的多环芳烃浓度，而高分子量（5~6环）的多环芳烃浓度在固相中富集。双环、三环和四环多环芳烃的总量占气相多环芳烃总质量浓度的87%，五元环和六元环多环芳烃大约占多环芳烃总含量10%和4%。相比之下，二环和三环多环芳烃在固相多环芳烃中的比例有所下降。三、四和五元多环芳烃在固相中具有绝对优势，分别占柴油和汽油车尾气中多环芳烃总量的89%和81%。关键词：机动车尾气；污染物；多环芳烃；监测技术中图分类号：X820.6文献标志码：A文章编号：1001-5922（2023）03-0136-04InnovationsintheanalysisandmonitoringofpolycyclicaromatichydrocarbonpollutantsinvehicleexhaustHANLi（TangshanMotorVehiclePollutionControlCenter，Tangshan063000，HebeiChina）Abstract：Polycyclicaromatichydrocarbons（PAHs）whicharethemostharmfulpollutantsinmotorvehicleex⁃haustwerecharacterizedandquantified.Thetailgassamplesofvehiclesunderdifferentdrivingconditionssuchasacceleration，deceleration，uniformspeedandidlespeedwerecollectedandanalyzedquantitativelybyreversephasehighperformanceliquidchromatography（HPLC）.Theresultsshowthattheconcentrationofpolycyclicaro⁃matichydrocarbonswithlowmolecularweight（2~3rings）inthegasphaseishigherthanthatinthesolidphase，whiletheconcentrationofpolycyclicaromatichydrocarbonswithhighmolecularweight（5~6rings）isenrichedinthesolidphase.Thetotalamountofbicyclic，tricyclicandtetracyclicpolycyclicaromatichydrocarbonsaccountsfor87%ofthetotalconcentrationofgas-phasepolycyclicaromatichydrocarbons，andfivememberedandsixmem⁃beredpolycyclicaromatichydrocarbonsaccountforabout10%and4%ofthetotalcontentofpolycyclicaromatichydrocarbons.Incontrast，theproportionofbicyclicandtricyclicPAHsinsolidPAHsdecreases.Three，Four...
