被动式吸收采样监测空气中二氧化硫、二氧化氮主要影响因素探讨

论述了关于被动式吸收采样法用于监测环境空气中的二氧化硫、二氧化氮的影响因素，包括风向、风速、温度、湿度、吸收液种类及浓度、吸收液加入方式等；提出在四季温差较大地区，监测结果的计算中需引入温度校正系数；建议采样时间以2～3周为宜。

Discussion on key Influencing Factors of Determination SO_2 and NO_2 in Air by Passive Sampling

Effecting parameters,including wind direction,wind speed,temperature,humidity,absorbent solution type and concentration,absorbent adding method etc,on monitoring sulfur dioxide and nitrogen dioxide by passive diffusion tube sampling method were summarized.It is suggested that a temperature factor should be introduced to result calculation at areas with big temperature ranges in different seasons,and the optical sampling duration is 2-3 weeks.