提出了一种利用被动采样处理过滤技术测定室内空气中二氧化氮的分光光度法。本方法适用于暴露时间为1小时，预期二氧化氮浓度在0至3 ppm（V/V）（0至6000µg/m（sup）3（/sup））范围内的室内空气，且在2小时取样期内的检测限为0.35 ppm。

Sets out a spectrophotometric method for the determination of nitrogen dioxide in indoor air using a passive sampling treated filter technique. This method is applicable to indoor air in which the expected nitrogen dioxide concentration is within the range 0 to 3 ppm (V/V) (0 to 6000 µg/m(sup)3(/sup)) for an exposure time of 1 h, and has a detection limit of 0.35 ppm for a 2 h sampling period.