油烟净化器对餐饮VOCs排放和光化学特征的影响

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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/m³，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.

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	蒋宝
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	白画画
	陈雪
	何万清
	聂磊
	石爱军
	李国傲

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

Abstract：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/m³, 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.

Key words： catering volatile organic compounds (VOCs) ozone formation potential (OFP) secondary organic aerosol (SOA)

收稿日期: 2020-09-24

PACS:

X511

基金资助:国家重点研发计划（2017YFC0211504）；北京市科技计划项目（Z171100004417029,Z181100005418015）

通讯作者: 李国傲,助理研究员,liguoao@cee.cn E-mail: liguoao@cee.cn

作者简介: 蒋宝(1988-),女,山东青州人,高级工程师,博士,主要从事环境污染风险评估与修复研究.发表论文9篇.

引用本文:

蒋宝, 孙成一, 白画画, 陈雪, 何万清, 聂磊, 石爱军, 李国傲. 油烟净化器对餐饮VOCs排放和光化学特征的影响[J]. 中国环境科学, 2021, 41(5): 2040-2047. JIANG Bao, SUN Cheng-yi, BAI Hua-hua, CHEN Xue, HE Wan-qing, NIE Lei, SHI Ai-jun, LI Guo-ao. Influence of fume purifier on VOCs emission characteristics and photochemical reaction of catering. CHINA ENVIRONMENTAL SCIENCECE, 2021, 41(5): 2040-2047.

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http://www.zghjkx.com.cn/CN/ 或 http://www.zghjkx.com.cn/CN/Y2021/V41/I5/2040

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