在温度（287±1）K的条件下，利用自制的室内烟雾箱探究反应物初始浓度比值、光照强度、相对湿度及部分种子气溶胶对C₄H₆O₂-NO₂光氧化生成SOA的影响。结果表明，反应物初始浓度比值、光照强度的增大会提高SOA的产生浓度，且与产生的SOA浓度最大值之间存在显著的线性关系；高湿度条件会抑制更多SOA的生成；3种因素对SOA生成的影响顺序为光照强度 > 反应物初始浓度比值 > 相对湿度。种子气溶胶（NH₄）₂SO₄、NH₄NO₃、Na₂SiO₃·9H₂O加入初期会促进SOA生成，之后会阻碍SOA的生成，使SOA的最终生成量降低；3种种子气溶胶对SOA生成的影响顺序为（NH₄）₂SO₄>NH₄NO₃≈Na₂SiO₃·9H₂O。

At a temperature of 287(±1) K,the effects of initial concentration ratio of reactants,light intensity,relative humidity and some seed aerosols on the generation of SOA from C₄H₆O₂-NO₂ are investigated in a self-made indoor smog chamber.The results indicate that the increases of both the initial concentration ratio of reactants and the light intensity will increase the production concentration of SOA,and there is a significant linear relationship between the ratio and the maximum concentration of SOA.High humidity conditions inhibit the generation of more SOA.Light intensity has the largest impact on SOA generation,followed by reactant initial concentration ratio and relative humidity.The addition of seed aerosol,such as (NH₄)₂SO₄,NH₄NO₃ and Na₂SiO₃·9H₂O,will promote the generation of SOA at the initial stage,but will hinder the generation of SOA later,and will reduce the final production of SOA.(NH₄)₂SO₄ has the greatest influence on SOA generation,come next with NH₄NO₃ and Na₂SiO₃·9H₂O.

杨智博(1996-),男,硕士研究生,研究方向为大气污染控制,995687800@qq.com