石化工业区中等挥发性有机物排放特征  

Emission Characteristics of Intermediate-Volatility Organic Compounds in Petrochemical Industrial Area

作　　者：张峰 陆思华[1,2] 李丛益 邵敏 李悦[1,2] 吕大器 李歆 刘莹 ZHANG Feng;LU Sihua;LI Congyi;SHAO Min;LI Yue;LU Daqi;LI Xin;LIU Ying(College of Environmental Sciences and Engineering,Peking University,Beijing 100871;State Joint Key Laboratory of Environmental Simulation and Pollution Control,Beijing 100871;PetroChina Sichuan Petrochemical Co.,Ltd.,Chengdu 611930;Institute for Environmental and Climate Research,Jinan University,Guangzhou 511443)

机构地区：[1]北京大学环境科学与工程学院,北京100871 [2]环境模拟与污染控制国家重点联合实验室,北京100871 [3]中国石油四川石化有限责任公司,成都611930 [4]暨南大学环境与气候研究院,广州511443

出　　处：《北京大学学报（自然科学版）》2023年第2期281-289,共9页Acta Scientiarum Naturalium Universitatis Pekinensis

基　　金：国家自然科学基金(91644215)资助。

摘　　要：选择典型石化工业区为研究对象,采集夏季(2021年7-8月)厂区空气IVOCs颗粒相及气相样品,探讨石化工业源排放IVOCs的污染特征,并估算其SOA生成潜势,得到如下结果。1)典型石化工业区的IVOCs颗粒相的平均浓度为4.22±1.54μg/m^(3),气相的平均浓度为108.87±78.93μg/m^(3)。不论是在气相中还是在颗粒相中,IVOCs白天的平均浓度均高于夜间。2)气相的正构烷烃集中在C12~C22区间,而颗粒相的正构烷烃集中在C_(22)~C_(35)区间。多环芳烃气相集中在萘和菲,颗粒相集中在芴。3)对石化工业区的IVOCs进行定量拆解,其浓度集中在B_(18)~B_(21)区间,4个分区的质量浓度加和占总体IVOCs质量的60.41%。A typical petrochemical industrial area was selected as the research object,and particulate phase and gas phase samples of intermediate-volatility organic compounds(IVOCs)were collected in the air of the plant area in summer(July and August in 2021)to explore the pollution characteristics of IVOCs emission from petrochemical industrial sources and estimate their corresponding SOA(secondary organic aerosols)formation potential.The results show that,1)the average concentration of IVOCs particle phase in typical petrochemical area is 4.22±1.54μg/m^(3),and the average concentration of IVOCs gas phase is 108.87±78.93μg/m^(3).The average concentration of IVOCs during the day is higher than that at night both in the gas phase and in the particle phase.2)The n-alkanes in gas phase are concentrated from C_(12) to C_(22),while the n-alkanes in particle phase are concentrated from C_(22) to C_(35).The gas phase of polycyclic aromatic hydrocarbons is concentrated in naphthalene and phenanthrene,and the particle phase is concentrated in fluorene.3)The IVOCs in the petrochemical industrial zone are quantitatively disassembled.The concentration is mainly concentrated in the interval B 18–B 21.The mass concentration sum of these four zones accounts for 60.41%of the total mass of IVOCs.

关 键 词：中等挥发性有机物(IVOCs) 石化工业区 排放浓度特征 二次有机气溶胶(SOA) 

分 类 号：X74[环境科学与工程—环境工程]