首页|β-罗勒烯光化学反应生成SOA和O3的影响因素

β-罗勒烯光化学反应生成SOA和O3的影响因素

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β-罗勒烯(C10H16)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O3浓度与β-罗勒烯初始浓度、NO2初始浓度、光照强度之间呈正相关关系;[C10H16]/[NO2]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800 μW/cm2,β-罗勒烯初始浓度为200 mg/m3,NO2初始浓度为20 mg/m3.
Effects of light intensity and initial concentration of reactants on the formation of SOA and O3 in β-ocimene photochemical reaction
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 of β-ocimene photochemical reaction,the mechanism of β-ocimene photochemical reaction was investigated by designing β-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 O3 concentration are positively correlated with the initial concentration of β-ocimene,initial con-centration of NO2 and light intensity.When[C10H16]/[NO2]is 6,it is better to improve the yield of SOA than[C10H16]/[NO2]is 1.Response surface analysis shows that the most significant photochemical reaction conditions awere light intensity 800 μW/cm2,initial concentration of β-ocimene 200 mg/m3 and initial concentration of NO2 20 mg/m3.The impact factors of β-ocimene photochemical reaction are clarified,and provides theoretical basis for at-mospheric BVOCs pollution control.

β-ocimenephotochemical reactionsmog chambersecondary organic aerosolO3

关亚楠、张毅森、刘雪娇、陈静、刘畅、朱烁、王丽涛、侯立安、段二红

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河北科技大学环境科学与工程学院,石家庄 050018

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

石家庄铁路职业技术学院,石家庄 050041

石家庄市环境气象中心,石家庄 050030

河北省生态环境应急与重污染天气预警中心,石家庄 050011

西安高新技术研究所,西安 710025

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β-罗勒烯 光化学反应 烟雾箱 二次有机气溶胶 臭氧

国家自然科学基金项目河北省自然科学基金项目河北省自然科学基金项目河北省自然科学基金项目河北省重点研发计划项目河北省重点研发计划项目石家庄重点研发计划项目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

U20A201714B2022208020B2021208033B202120804022373704D19273703D211240233AZXJJ20210401

2024

10.3969/j.issn.1674-9057.2024.03.017

桂林理工大学学报
桂林理工大学

桂林理工大学学报

CSTPCD北大核心
影响因子：0.618
ISSN：1674-9057
年,卷(期)：2024.44(3)