石化工业区臭氧前体物排放及其与臭氧污染关联性研究进展

Research on Ozone Precursor Emission and its Correlation with Ozone Pollution in Petrochemical Industry Zone

目前,石化行业是臭氧前体物(VOCs和NO_(X))排放的重要污染源之一,已被列为重点管控对象,针对这一现状,梳理了石化工业区臭氧前体物的排放情况、臭氧污染监测情况以及臭氧污染成因分析方法。研究发现,石化企业VOCs、NO_(X)的排放特征已有较多报道,但石化工业区区域性VOCs、NO_(X)与周围环境空气中臭氧的关联性及臭氧形成机制的研究鲜有报道,这就限制了对石化工业区区域性的臭氧与前体物关系的了解。目前石化企业存在VOCs的排放特征缺乏代表性、区域性臭氧污染成因尚不清楚等问题,建议开发统一、标准化的监测方法,并对石化工业区的臭氧及前体物浓度开展长期监测,基于长期监测数据对臭氧污染成因开展深入研究,从而识别对臭氧污染起关键性作用的影响因素。

The petrochemical industry,whichleads to a mass of ozone precursor(i.e.volatile organic compounds(VOCs)and NO_(X))emissions,has been listed as a key control object.In view of this,recent researches on the ozone precursor emissions,ozone pollution monitoring,and analysis methods of ozone pollution formation in petrochemical industrial zoneare reviewed in this discussion.It is found that thus far,there were many studies on the emission characteristics of VOCs and NO_(X)in petrochemical enterprises,but few reports concerning the relationship between regional ozone precursors(i.e.VOCs and NO_(X))with O_(3),and the formation mechanism of ozone in the petrochemical industry.This limits the understanding of the relationship between regional ozone pollution and its precursors in petrochemical industrial zones.Moreover,petrochemical companies suffer from a lack of representative VOCs emission characteristics and of cognition regarding the regional ozone pollution.Thus,developing uniform and standardized monitoring methods and carrying out long-term monitoring of ozone and precursors in petrochemical industrial zones is required.Based on long-term monitoring data,in-depth research on the causes of ozone pollution formation is expected to identify the factors that play a key role in ozone pollution.