化学试剂和助剂制造行业VOCs排放成分谱及影响

Source Profiles and Impact of VOCs in the Chemical Reagent and Auxiliary Manufacturing Industry

使用SUMMA罐采集和GC-MS定量分析技术研究了上海市化学试剂和助剂制造行业6家企业有组织废气中的挥发性有机物(VOCs),计算了各企业VOCs排放量和排放系数,并对排放成分谱及臭氧生成潜势(OFP)进行了分析和评价。结果表明,该行业VOCs的基本组分为烷烃、芳香烃、卤代烃和含氧烃(OVOCs),这些组分占总VOCs的99.5%以上;主要特征污染物包括2-甲基戊烷、3-甲基戊烷、正己烷、甲基环戊烷、四氢呋喃、丙酮、乙苯和间/对二甲苯;烷烃、芳香烃和OVOCs是主要的光化学活性组分;四氢呋喃、2-甲基戊烷、3-甲基戊烷、1,2,4-三甲苯、1.2,3-三甲苯等是对OFP贡献较大的因子;源反应性(SR)处于各行业平均水平。研究建议该行业应重点管控C6-C8烷烃、C8-C9芳香烃和OVOCs的排放,并特别关注臭氧生成能力强的VOCs因子,以降低其对环境和人体健康的影响。

Using SUMMA canisters and GC-MS technology,this study investigated the volatile organic compounds(VOCs)emitted by six chemical reagent and additive manufacturing companies in Shanghai.Emission quantities and factors were calculated,and the emission composition spectrum and ozone formation potential(OFP)were analyzed and evaluated.The results indicate that the basic components of VOCs in this industry were alkanes,aromatics,halogenated hydrocarbons,and oxygen-containing hydrocarbons(OVOCs),which account for more than 99.5%of total VOCs.The major characteristic pollutants include 2-methylpentane,3-methylpentane,n-hexane,methylcyclopentane,tetrahydrofuran,acetone,ethylbenzene,and m/p-xylene.Alkanes,aromatics,and OVOCs were the primary photochemical reactive components,while tetrahydrofuran,2-methylpentane,3-methylpentane,1,2,4-trimethylbenzene,and 1,2,3-trimethylbenzene were the main contributors to OFP.The source reactivity(SR)was within the average range of various industries.The study suggests that this industry should prioritize controlling emissions of C6-C8 alkanes,C8-C9 aromatics,and OVOCs,especially those with high ozone formation potential,to reduce their impact on the environment and human health.