| 摘要 |
Method and apparatus for providing an application of the principles of affinity chromatography in the design of cigarette filtration media to permit the planning and development of filter elements that selectively remove a class of target components of smoke. The filter elements are preferably silica with attached functional groups of the general formula: R<1>-(CH2)n- where n is an integer from 1 to 40; and R<1> represents hydrogen, hydroxy, amine, amide, cyano, nitrate, nitro, thio, sulfide, sulfone, sulfoxide, I, Br, Cl, F or an alkyl or aryl organic substituent containing from about 1 to 40 carbon atoms, which may be straight or branched, saturated or unsaturated and optionally substituted with one or more substituents selected from O, N, S or halides.
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