| 摘要 |
Method for reducing normal concentrations of hydrogen cyanide and/or nitrogen oxide by-products in cigarette smoke, by using, as garniture feed for a cigarette filter rod-making apparatus, one or more substrates, one or more surfaces thereof being treated by applying thereto an effective amount of at least one of (A) a solution, emulsion or dispersion of at least one of sodium bicarbonate, sodium carbonate, potassium permanganate, manganese dioxide in a nonionic spin solution; (B) glycerol triacetate; and corresponding filter element and cigarette utilizing a filter formed of such substrate(s).
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