CORESTA Congress, Edinburgh, 2010, PT 07

Development of deep-cavity calixarene materials for selectively reducing benzo[a]pyrene and major phenolic compounds in mainstream cigarette smoke

MAO Youan; ZHONG Kejun; LIU Wei; ZHANG Fen; LIAN Wenliu; LU Hongbing
Technical Center, China Tobacco Hunan Industrial Co. Ltd., Changsha, China

In order to selectively reduce the contents of benzo[a]pyrene and major phenolic compounds in mainstream cigarette smoke (MCS), two kinds of deep-cavity calixarene powder materials, p-[1-(4-methoxyphenyl)-1-methyl-ethyl] calyx[8]arene (I) and p-[1-(4-hydroxyphenyl)-1-methyl-ethyl] calyx[8]arene (II), were synthesized from p-[1-(4-methoxyphenyl)-1-methyl-ethyl] phenol and characterized by 1H NMR, 13C NMR, fast atom bombardment MS, thermal analysis and element analysis. Cigarette samples were prepared by respectively adding calixarene materials I and II into filter tip at the rate of 10 mg/cig., the results from cigarette smoke analysis showed that the additives had little influence on the deliveries of tar, CO, nicotine and moisture content in MCS. The benzo[a]pyrene content in MCS decreased by 13% and 52% with the addition of I and II, respectively. For additive I, the decrease percentage of hydroquinone, resorcinol and catechol in MCS was all less than 10%, and that of phenol, o -cresol, and m-/p -cresol in MCS was about 18%. As for additive II, the decrease percentage of hydroquinone, resorcinol and catechol in MCS was 50%-56% and that of phenol, o -cresol, and m-/p -cresol in MCS was 62%-66%. These experimental results indicated that the synthesized deep-cavity calixarene materials could be used to selectively remove benzo[a]pyrene and major phenolic compounds in MCS.