油烟净化器对餐饮VOCs排放和光化学特征的影响  

Influence of fume purifier on VOCs emission characteristics and photochemical reaction of catering

作　　者：蒋宝 孙成一 白画画[1] 陈雪[1] 何万清[1] 聂磊[1] 石爱军[1] 李国傲[1] JIANG Bao;SUN Cheng-yi;BAI Hua-hua;CHEN Xue;HE Wan-qing;NIE Lei;SHI Ai-jun;LI Guo-ao(National Urban Environmental Pollution Control Engineering Research Center,Beijing Key Laboratory of Urban Atmospheric Volatile Organic Compounds Pollution Control and Application,Beijing Municipal Research Institute of Environmental Protection,Beijing 100037,China)

机构地区：[1]北京市环境保护科学研究院,国家城市环境污染控制工程技术研究中心,城市大气挥发性有机物污染防治技术与应用北京市重点实验室,北京100037

出　　处：《中国环境科学》2021年第5期2040-2047,共8页China Environmental Science

基　　金：国家重点研发计划(2017YFC0211504);北京市科技计划项目(Z171100004417029,Z181100005418015)。

摘　　要：选取了北京市21家餐饮企业,检测了净化器前端和后端的挥发性有机污染物(VOCs)的浓度水平,经油烟净化器净化后,烷烃类、烯烃类、含氧VOCs类和苯系物类污染物的排放平均浓度分别为(714.62±212.17),(264.88±94.58),(374.72±57.48)和(174.93±55.19)μg/m^(3),烯烃类污染物中仅对四氯乙烯有明显的浓度降低效果.根据净化器对VOCs污染物的去除效果,有35.7%的净化器净化效率为负值.烯烃类污染物是餐饮油烟污染中臭氧生成的最重要的前体物,占总臭氧生成潜势的48.2%~50.7%.苯系物成为餐饮业排放污染物中二次有机气溶胶(SOA)的主要前体物,占总SOA生成潜势的95%以上.21 restaurants in Beijing were selected to examine the concentrations of VOCs before and after fume purifiers.The results showed that the average concentrations of alkane,alkene,oxygenated volatile organic compounds(OVOCs)and benzene series were(714.62±212.17),(264.88±94.58),(374.72±57.48)and(174.93±55.19)μg/m^(3),respectively.Among alkene compounds,only the concentration of tetrachloroethylene significantly decreased after fume purifying.Interestingly,the VOC-removal efficiency for 35.7%of fume purifiers was negative.As the most important precursors of ozone,ozone formation potential(OFP)of alkene compounds counted for 48.2%~50.7%of total OFP.Benzene series had become the most important precursor of secondary organic aerosol(SOA)in the restaurant emissions,accounting for more than 95%of the total SOA potential.

关 键 词：餐饮业 挥发性有机污染物 臭氧生成潜势 二次有机气溶胶 

分 类 号：X511[环境科学与工程—环境工程]