TRANSFORMATIONS, LIFETIMES, AND SOURCES OF NO2, HONO, AND HNO3 IN INDOOR ENVIRONMENTS
TRANSFORMATIONS, LIFETIMES, AND SOURCES OF NO2, HONO, AND HNO3 IN INDOOR ENVIRONMENTS
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DOI：
10.1080/1073161x.1993.10467221
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发表时间：
1993-11-01
影响因子：
2.7
通讯作者：
BILLICK, IH
中科院分区：
文献类型：
--
作者：
SPICER, CW;KENNY, DV;BILLICK, IH
最近的研究表明，在室内环境中，氮氧化物会转化为氮酸，室内空气中存在大量的亚硝酸。本文研究的目的是调查建筑物内氮氧化物和氮酸的来源、化学转化和寿命。对一栋无人居住的独栋住宅进行了NO、NO2、NO(Y)、HONO、HNO3、CO、温度、相对湿度和空气交换率的监测。在一些实验中，NO2和HONO被注入到房子里，以确定它们的去除率和寿命。其他实验调查了未通风的天然气用具中氮素的排放和转化。我们确定HONO是由燃烧过程的直接排放和NO2与室内存在的表面反应形成的。平衡考虑影响了这两个源对HONO室内负荷的相对贡献。我们确定了微量氮物种的寿命按NO的顺序变化类似于HONO>；NO2>；HNO3。关于反应过程，NO和HONO的寿命约为几小时，NO2约为一小时，HNO3约为30分钟或更短。NO2的快速去除和HONO的长寿命表明，HONO可能占室内空气中氧化氮负荷的很大一部分。
Recent research has demonstrated that nitrogen oxides are transformed to nitrogen acids in indoor environments, and that significant concentrations of nitrous acid are present in indoor air. The purpose of the study reported in this paper has been to investigate the sources, chemical transformations and lifetimes of nitrogen oxides and nitrogen acids under the conditions existing in buildings. An unoccupied single family residence was instrumented for monitoring of NO, NO2, NO(y), HONO, HNO3, CO, temperature, relative humidity, and air exchange rate. For some experiments, NO2 and HONO were injected into the house to determine their removal rates and lifetimes. Other experiments investigated the emissions and transformations of nitrogen species from unvented natural gas appliances. We determined that HONO is formed by both direct emissions from combustion processes and reaction of NO2 with surfaces present indoors. Equilibrium considerations influence the relative contributions of these two sources to the indoor burden of HONO. We determined that the lifetimes of trace nitrogen species varied in the order NO is similar to HONO > NO2 > HNO3. The lifetimes with respect to reactive processes are on the order of hours for NO and HONO, about an hour for NO2, and 30 minutes or less for HNO3. The rapid removal of NO2 and long lifetime of HONO suggest that HONO may represent a significant fraction of the oxidized nitrogen burden in indoor air.