邢台市典型行业VOCs排放特征研究

为了解邢台市不同行业企业挥发性有机物（VOCs）污染特征，通过Summa罐采集样品，采用预浓缩-气质联用仪系统（GC-MS/FID）进行测定分析，探究不同行业VOCs特征组分变化，并分析了VOCs排放对OFP（臭氧生成潜势）贡献影响.结果表明:①光伏元件制造、木材深加工及印刷行业排放的VOCs中以OVOCs（含氧挥发性有机物）为主，其占比在52.7%以上，特征物种为异丙醇、丙酮及乙酸乙酯等；玻璃深加工、汽车表面喷涂及家具制造行业排放的VOCs中以芳香烃为主，占比为36.7%~93.8%，特征物种为间/对-二甲苯、邻-二甲苯和对-二乙基苯等.②玻璃深加工、汽车表面喷涂及家具制造行业排放的VOCs中对OFP贡献较大组分为芳香烃，占比为88.3%~98.2%，活性物种为间/对-二甲苯、甲苯及邻-二甲苯等C₇~C₉的苯系物；光伏元件制造和印刷行业排放的VOCs中对OFP贡献较大的组分为OVOCs，占比为92.8%~95.2%，活性物种为异丙醇、乙酸乙酯及甲基乙基酮等；木材深加工行业排放的VOCs中对OFP贡献较大的组分为OVOCs和烯烃，占比分别为39.0%~53.4%和23.0%~25.3%，活性物种主要为丙酮、甲基乙基酮及1-丁烯等.研究显示，邢台市玻璃深加工和汽车表面喷涂企业中芳香烃对OFP影响较大，其次是印刷企业，亟需优先加强管控. 

Emission Characteristics of Volatile Organic Compounds (VOCs) from Typical Industrial Sectors in Xingtai City

In order to understand the pollution characteristics of volatile organic compounds (VOCs) emitted from the different industrial sectors in Xingtai City, Hebei Province, samples were collected by using Summa canisters. A pre-concentration-gas/mass spectrometry (GC-MS/FID) system was used for determination of the characteristic components of VOCs in different industries. The contributions of these VOCs to ozone formation potential (OFP) were analyzed. The results showed that oxygenated volatile organic compounds (OVOCs), especially isopropanol, acetone and ethyl acetate emitted by photovoltaic element manufacturing, wood processing and printing industries, were the major species, accounting for 52.7% of the total VOCs. The VOCs emitted by glass deep processing, automobile surface coating and furniture manufacturing industries were mainly aromatics, accounting for 36.7%-93.8% of the total VOCs. The characteristic species were m/p-xylene, o-xylene, p-diethyl benzene, etc. Among the VOCs emitted by glass deep processing, automobile surface coating and furniture manufacturing industries, the major component that contributed to OFP was aromatic hydrocarbons, accounting for 88.3% to 98.2%, and the active species were C₇-C₉ benzene series, such as m/p-xylene, toluene and o-xylene. Among the VOCs emitted by photovoltaic component manufacturing and printing industries, the major contribution component to OFPs was OVOCs, accounting for 92.8% to 95.2%, and the active species were isopropanol, ethyl acetate, methyl ethyl ketone, etc. Among the VOCs emitted by the wood deep processing industry, the major components contributing to OFPs were OVOCs and alkenes, accounting for 39.0% to 53.4% and 23.0% to 25.3%, respectively. The active species were mainly acetone, methyl ethyl ketone and 1-butene. This research shows that the aromatic hydrocarbon components in glass deep processing and automobile surface coating sectors have a dominant impact on OFP in Xingtai City, followed by the printing sectors, which urgently need to be prioritized to strengthen management and control.