室内环境条件下促进NO氧化的主要因素解析

室内环境条件下促进NO氧化的主要因素解析 Study on the Main Factors of Accelerating Nitrogen Monoxide Oxidation in Indoor Environment 张竹青 ZHANG Zhu-qing~ 1 2 3 first-author 安从俊 1 2 3 丁宗洲 1 2 3 郑丹 1 2 3 张业中 1 2 3 武汉大学化学与分子科学学院 武汉大学化学与分子科学学院 1,2), AN Cong-jun~1, DING Zong-zhou~1, ZHENG Dan~1, ZHANG Ye-zhong~2 1,2), AN Cong-jun~1, DING Zong-zhou~1, ZHENG Dan~1, ZHANG Ye-zhong~2 长江大学环境工程系,湖北,武汉,430072 长江大学环境工程系,湖北,武汉,430072 ,湖北,武汉,430072 ,湖北,武汉,430072 利用风洞实验装置,对室内环境条件下促进NO氧化的主要因素进行了研究.结果表明,紫外线强度增大可以加快NO的氧化速率;照度增大也可加快NO的氧化速率,但不显著;温度、湿度对NO的氧化速率无明显影响;NO的初始浓度对NO的氧化速率有影响,当NO的初始浓度在500～900μg/L范围内,初始速率的对数与NO的初始浓度的对数有良好的线性关系,而且NO浓度倒数的对数与时间t也具有良好线性关系,据此可推断NO反应级数α=1.当微量臭氧、丙烯、甲烷共存时,NO的氧化速率显著加快.因而在室内环境条件下,微量的O3、丙烯、甲烷对NO的氧化有明显的促进作用.另外较高浓度NO2共存时对上述反应也具有明显的促进作用. With the aid of wind-tunnel experimental setup, the main factors which accelerate the oxidation of nitrogen monoxide in indoor environment were studied. It’s shown that the intension of ultraviolet radiation can accelerate the oxidation of NO, illumination has the same function but do not notable. Temperature and humidity have no influence on the oxidation velocity of NO. Initial concentration of NO has influence upon oxidation of NO, when the initial concentration of NO ranges between 500 and 900 μg/L, ln（-dc 0 （NO）/dt） has a good linear relationship with ln c 0 （NO）, so do ln（1/c 0 （NO）） and the time. Based on this, a conclusion can be draw that reaction order of NO is 1. When there is trace of coexistent ozone, propylene and methane, the oxidation velocity of NO increases markedly. Besides, when the concentration of coexistent NO 2 is high, it also accelerates the reaction of NO remarkable. 室内环境 一氧化氮 影响因素 indoor environment nitrogen monoxide influencing factor X831 国家自然科学基金资助项目（20077020） 2003-06-01 2021-04-01 6