β-罗勒烯光化学反应生成SOA和O_(3)的影响因素  

Effects of light intensity and initial concentration of reactants on the formation of SOA and O_(3) inβ-ocimene photochemical reaction

作　　者：关亚楠[1,2] 张毅森 刘雪娇 陈静 刘畅 朱烁[5] 王丽涛 侯立安 段二红 GUAN Yanan;ZHANG Yisen;LIU Xuejiao;CHEN Jing;LIU Chang;ZHU Shuo;WANG Litao;HOU Li’an;DUAN Erhong(School of Environmental Science and Engineering,Hebei University of Science and Technology,Shijiazhuang 050018,China;National Joint Local Engineering Research Center for Volatile Organic Compounds and Odorous Pollution Control,Hebei University of Science and Technology,Shijiazhuang 050018,China;Shijiazhuang Institute of Railway Technology,Shijiazhuang 050041,China;Shijiazhuang Environmental Meteorological Center,Shijiazhuang 050030,China;Hebei Province Ecological and Environmental Emergency and Heavy Pollution Weather Warning Centre,Shijiazhuang 050011,China;Xi’an High-Tech Institute,Xi’an 710025,China)

机构地区：[1]河北科技大学环境科学与工程学院,石家庄050018 [2]河北科技大学挥发性有机物与恶臭污染防治国家地方联合工程研究中心,石家庄050018 [3]石家庄铁路职业技术学院,石家庄050041 [4]石家庄市环境气象中心,石家庄050030 [5]河北省生态环境应急与重污染天气预警中心,石家庄050011 [6]西安高新技术研究所,西安710025

出　　处：《桂林理工大学学报》2024年第3期511-519,共9页Journal of Guilin University of Technology

基　　金：国家自然科学基金项目(U20A201714);河北省自然科学基金项目(B2022208020,B2021208033,B2021208040);河北省重点研发计划项目(22373704D,19273703D);石家庄重点研发计划项目(211240233A);河北省化工行业挥发性有机物检测与治理技术创新中心基金项目(ZXJJ20210401)。

摘　　要：β-罗勒烯(C_(10)H_(16))是BVOCs的优势物种,为明晰其光化学反应的影响因素,通过设计单因素变量、多因素变量β-罗勒烯光化学反应试验探究了β-罗勒烯光化学反应机理。结果表明:SOA粒子数和O_(3)浓度与β-罗勒烯初始浓度、NO_(2)初始浓度、光照强度之间呈正相关关系;[C_(10)H_(16)]/[NO_(2)]值为6时比其值为1的条件下更有利于提高SOA产率;利用响应曲面法分析发现,对β-罗勒烯光化学反应影响最显著的反应条件是光照强度为800μW/cm^(2),β-罗勒烯初始浓度为200 mg/m^(3),NO_(2)初始浓度为20 mg/m^(3)。In recent years,the pollution of volatile organic compounds(VOCs)is increasingly serious,among which biogenic volatile organic compounds(BVOCs)occupy the main position.β-ocimene is the dominant species of BVOCs.In order to explore the influencing factors ofβ-ocimene photochemical reaction,the mechanism ofβ-ocimene photochemical reaction was investigated by designingβ-ocimene photochemical reaction experiment with single factor variable and multi-factor variable in this paper.The results of univariate variable experiment showed that the number of SOA particles and O_(3) concentration are positively correlated with the initial concentration ofβ-ocimene,initial concentration of NO_(2) and light intensity.When[C_(10)H_(16)]/[NO_(2)]is 6,it is better to improve the yield of SOA than[C_(10)H_(16)]/[NO_(2)]is 1.Response surface analysis shows that the most significant photochemical reaction conditions awere light intensity 800μW/cm^(2),initial concentration ofβ-ocimene 200 mg/m^(3) and initial concentration of NO_(2)20 mg/m^(3).The impact factors ofβ-ocimene photochemical reaction are clarified,and provides theoretical basis for atmospheric BVOCs pollution control.

关 键 词：β-罗勒烯 光化学反应 烟雾箱 二次有机气溶胶 臭氧 

分 类 号：X515[环境科学与工程—环境工程]