沈阳市某工业园区挥发性有机物活性及来源解析

Active species and source apportionment of volatile organic compounds in an industrial park of Shenyang

利用沈阳市某工业园区大气监测数据,依据等效丙烯浓度(PEC)和臭氧生成潜势(OFP)法识别园区挥发性有机物(VOC_(s))活性物种,基于主成分分析(PCA)法和正定矩阵因子分析(PMF)模型进行VOC_(s)来源解析。结果表明:芳香烃、烯烃和C5烷烃为园区活性较强的组分;PCA法和PMF模型的VOC_(s)来源解析结果基本一致,园区VOC_(s)主要排放源为工艺过程源、溶剂涂料源、工业燃烧源、油品挥发源和机动车尾气源,这与城市大气VOC_(s)来源有明显差异。油品制造、化学药品制造、轮胎制造、溶剂涂料制造和造纸等是园区主要排放VOC_(s)的行业,管理部门应加强对涉及以上行业的相关企业进行重点管控。

In order to understand the active species and sources of volatile organic compounds(VOC_(s))in an industrial park of Shenyang,field measurements data of ambient VOC_(s) was collected and analyzed.Propylene-equivalent concentration(PEC)and ozone formation potentials(OFP)were used to determine the active species.Principal Component Analysis(PCA)and Positive Matrix Factorization(PMF)methods were also applied to identify the major VOC_(s) contributing sources.The results showed that aromatic,alkenes and C5 alkanes were the most important reactive components.The source apportionments based on the PCA and PMF methods were almost identical,both of which indicated that industrial process,solvent coating,industrial combustion,gasoline evaporation and vehicular exhaust were the main VOC_(s) sources in this industrial park,which was of great difference with urban ambient VOC_(s).In conclusion,oil manufacturing,chemical manufacturing,tire manufacture,solvent coating and papermaking were major sources of the VOC_(s) emissions,and the management should strengthen the emission control in these departments.