长三角区域人为源活性挥发性有机物高分辨率排放清单

基于长三角区域41个城市本地实测,结合美国EPA的SPECIATE 4.4数据库,建立了长三角区域人为源活性挥发性有机物(VOCs)高分辨率排放清单,分析了区域内VOCs的排放特征和组分构成;计算了VOCs的臭氧生成潜势(OFP)和二次有机气溶胶生成潜势(SOAP).结果表明,2017年,长三角区域人为源VOCs排放总量为4.9×10⁶ t,其中工艺过程源、工业溶剂使用源、移动源、生活源、储运源、农业源和废弃物处理源排放贡献分别为：34.3%、27.1%、19.5%、9.7%、6.1%、2.5%和0.4%.芳香烃和烷烃是VOCs的主要种类,均各占长三角VOCs排放总量的25%.工艺过程源、工业溶剂使用源、移动源和生活源OFP贡献率分别为38.3%、21.5%、16.4%和13.2%,SOAP贡献率分别为26.2%、34.1%、18.1%和17.9%,与VOCs排放量的主要贡献源基本一致.各城市VOCs重点排放行业存在较大差异,重点城市群以石化化工和装备制造为主,区域北部则以木材家具等涂装行业为主.计算表明,丙烯、间/对-二甲苯和乙烯是臭氧主要贡献源;甲苯、1,2,...

High-resolution Emission Inventory of Reactive Volatile Organic Compounds from Anthropogenic Sources in the Yangtze River Delta Region

A high-resolution emission inventory of anthropogenic active volatile organic compounds (VOCs) for the Yangtze River Delta (YRD) region was developed based on the local measurement of 41 cities in the region and the specific 4.4 database of EPA. The emission characteristics and composition of VOCs were analyzed. The ozone formation potential (OFP) and secondary organic aerosol formation potential (SOAP) of VOCs were calculated. The results showed that the total emission of anthropogenic VOCs in the YRD in 2017 was 4.9×10⁶ t. The emission contributions of process sources, industrial solvent sources, mobile sources, domestic sources, storage and transportation sources, agricultural sources, and waste treatment sources were 34.3%, 27.1%, 19.5%, 9.7%, 6.1%, 2.5%, and 0.4%, respectively. Aromatic hydrocarbons and alkanes were the main components of VOCs, accounting for 25% of the total VOCs emissions in the region. The contribution rates of OFP from process sources, industrial solvent sources, mobile sources, and domestic sources were 38.3%, 21.5%, 16.4%, and 13.2%, respectively, and the contribution rates of SOAP were 26.2%, 34.1%, 18.1%, and 17.9%, respectively, which was basically consistent with the main contribution sources of VOCs emissions. The emission characteristics of the key industries in each city were obviously different. The key urban agglomeration of VOCs emission was mainly petrochemical industries and equipment manufacturing, whereas the northern part of the region was mainly wood furniture and other coating industries. The results showed that propylene, m-xylene, p-xylene, and ethylene were the main contribution sources of ozone, whereas toluene, 1,2,4-trimethylene, m-xylene, and p-xylene were the main contribution sources of secondary organic aerosols. In the next stage, the fine management of VOCs can be transformed into the main industries based on chemical reaction activity, which can give priority to the governance of key industries such as the chemical industry, petrochemical, automobile manufacturing, textile, wood, and furniture and can formulate different governance paths according to urban characteristics.