摘要
研究室内臭氧和甲苯两种污染物之间的化学反应和可能产生的二次污染,可以有效提高室内空气品质.依据臭氧与甲苯化学反应的基本原理,利用环境舱实验监测臭氧与甲苯共同存在时,两者浓度的变化以及室内颗粒物浓度的变化.实验研究发现臭氧与甲苯发生了氧化反应,加快了臭氧的衰减;通入甲苯后,计数中径0.27μm以下颗粒物浓度出现明显增加,在颗粒物浓度达到最大值时,0.27μm以下颗粒物总数占总颗粒物的99.57%.室内臭氧和甲苯可发生化学反应,生成包括超细颗粒物在内的可吸入细颗粒物,影响室内空气质量.
Chemical reaction and secondary pollutant of ozone and toluene as indoor contaminants were studied to improve indoor air quality. Based on the theory of chemistry reaction of ozone and toluene, as both reactants were filled in a small-scale environmental chamber, the concentrations of ozone, toluene and particles were measured by relative instruments on real time. The experimental results show that toluene has an oxidation reaction with ozone and conduces to the decay of ozone concentration. When toluene is filled into the chamber, concentration of small particles with number median diameter lower than 0.27 μm increases obviously. When the particles concentration reaches to the maximum, 99.75% of the total particles is small particles including the ultrafine particles. It is concluded that both contaminants can react with each other, and their combination can result in more inhalable particles including ultrafine particles as secondary pollutants to affect indoor air quality.
出处
《天津大学学报》
EI
CAS
CSCD
北大核心
2008年第10期1258-1262,共5页
Journal of Tianjin University(Science and Technology)
基金
国家十五科技攻关资助项目(2004BA719A16)
关键词
臭氧
甲苯
环境舱
超细颗粒物
室内空气质量
ozone
toluene
environmental chamber
ultrafineparticle
indoor air quality
