种子气溶胶对1,3-丁二烯臭氧光氧化形成二次有机气溶胶的影响  

Effect of seed aerosol on the formation of secondary organic aerosols by 1,3-butadiene ozone oxidation

作　　者：王姗姗[1] 任爱玲[1] 王宁 郭斌[1,2] 张硕 杜昭 

机构地区：[1]河北科技大学环境科学与工程学院,河北石家庄050018 [2]河北省大气污染防治推广中心,河北石家庄050018

出　　处：《煤炭与化工》2017年第8期24-30,共7页Coal and Chemical Industry

基　　金："十二五"国家科技支撑计划项目(2014BAC23B04-03)

摘　　要：采用自制烟雾箱模拟了1,3-丁二烯(C4H6)臭氧光氧化反应。利用傅立叶变换红外气体分析仪在线检测系统检测了C4H6臭氧光氧化反应气相产物,检测结果表明,产物主要有CO、甲醛和丙烯醛,并与FACSIMILE软件模拟结果进行对比分析。考察了种子气溶胶对C4H6臭氧光氧化反应形成二次有机气溶胶的影响。结果表明,硅酸钠种子气溶胶对二次有机气溶胶(SOA)的生成起阻碍作用,且浓度大小对阻碍作用强弱有影响;氯化钙、硫酸铵和硝酸铵种子气溶胶对SOA的生成同样起到阻碍作用,但其浓度的影响不明显;4种种子气溶胶阻碍SOA形成的顺序依次为硝酸铵>硅酸钠>氯化钙和硫酸铵。The photooxidation of 1, 3-butadiene （ C4H6 ） was simulated using a self-made smog chamber. The gas phase products of C-H6 ozone oxidation reaction were detected by an on-line Fourier transform infrared gas analyzer. The results show that gas-phase products have CO, formaldehyde and acrolein, and compared with FACSIMILE software simulation results. The effects of seed aerosol on the formation of secondary organic aerosol （ SOA ） by C4H6 photooxidation were investigated. It show that sodium silicate seed aerosol obstructs the generation of SOA, and its concentration has influence on the strength of the obstacles; Calcium chloride, ammonium sulfate and ammonium nitrate seed aerosols also obstruct the generation of SOA, but the effect of the concentration is not obvious; The order of four kinds of seed aerosol obstruct the generation of SOA is ammonium nitrate〉 sodium silicate〉 calcium chloride and ammonium sulfate.

关 键 词：1 3-丁二烯 烟雾箱 二次有机气溶胶 种子气溶胶 

分 类 号：O648.18[理学—物理化学]