卷烟主流烟气中NO_x截留的研究

Study on Removal of Nitrogen Oxides in Tobacco Smoke Main Stream

目的 探讨截留卷烟主流烟气中氮氧化物的有效方法。方法 向卷烟滤嘴中以2.0、4.0和8.0μg/支加入卟啉及铁卟啉。采用盐酸萘乙二胺分光光度法分析卟啉及铁卟啉对清除卷烟主流烟气中氮氧化物的效果。结果 卷烟主流烟气中氮氧化物随卷烟滤嘴中卟啉及铁卟啉含量的增加而降低（卟啉:r=-0.994 3,P<0.01;铁卟啉:r=-0.989 2,P<0.01）。结论 卟啉和铁卟啉对卷烟主流烟气中氮氧化物有明显的截留效果。

ve To explore the effective methods for removing the nitrogen oxides in tobacco smoke main stream. Methods Porphyrin and ferriporphyrin were added into cigarette filter with doses of 2.0, 4.0 and 8.0 μg per cigarette. The effectiveness of removal of nitrogen oxides in tobacco smoke main stream by porphyrin and ferripor-phyrin were determined by muriatic acid naphthaline-ethylene diamine spectrophotometry. Results The contents of nitrogen oxides in tobacco smoke main stream decreased with the increases of the contents of porphyrin and ferripor-phyrin added into the cigarette filters (porphyrin: r= -0.9943, P<0.01; ferriporphyrin: r= -0.9892 P< 0.01). Conclusion Porphyrin and ferriporphyrin presented significant effectiveness on removal of nitrogen oxides in tobacco smoke main stream.