成都市典型有机溶剂使用行业VOCs组成成分谱及臭氧生成潜势研究

Source profiles and ozone formation potential of VOCs emitted from typical industries using organic solvents in Chengdu

选取成都市5大典型有机溶剂使用行业——包装印刷业、人造板制造业、家具制造业、制鞋业和化学品制造业具有代表性的15家企业测定挥发性有机物(VOCs)排放组分,并对其不同组分的臭氧生成潜势(OFP)进行分析.研究结果表明:不同行业排放的VOCs之间存在较大差异,包装印刷业和人造板制造业主要排放含氧VOCs(OVOCs),家具制造业主要排放芳香烃和OVOCs,制鞋业和化学品制造业主要排放OVOCs、芳香烃和烷烃;芳香烃是化学反应活性最强的组分,对臭氧的生成贡献普遍较大,其中贡献最大的邻二甲苯及间二甲苯的OFP值分别为92.13 mg·m^-3和89.65 mg·m^-3,二者占总OFP的40%;五大典型有机溶剂使用行业中,家具制造业对O3生成的贡献最大,OFP贡献率为34.59%.

The emitted volatile organic compounds(VOCs)were measured in 15 representative factories from five typical industries using organic solvents in Chengdu,including packaging-printing,wood-based panel manufacturing,furniture manufacturing,shoemaking,and chemical manufacturing.The ozone formation potential(OFP)of different VOCs were analyzed.The results show that the emitted VOCs varied widely among different industries.The packaging-printing and wood-based panel manufacturing industries mainly emitted oxygenated VOCs(OVOCs).The furniture manufacturing industry mainly emitted aromatic hydrocarbons and OVOCs.The shoemaking and chemical manufacturing industries mainly emitted OVOCs,aromatic hydrocarbons and alkanes;Aromatic hydrocarbons,as the most active VOCs,generally made great contributions to the ozone formation.The OFP values of o-xylene and m-xylene,which were the largest contributors,were 92.13 and 89.65 mg·m^-3,respectively,together accounting for 40%of the total OFP;Among the five typical industries using organic solvents,the furniture manufacturing contributed the most to the ozone formation,accounting for 34.59%of the total OFP.