Amberlite IRC748螯合过渡金属离子降低卷烟烟气中HCN研究

Study on Amberlite IRC748 Chelating Transition Metal Ions for Reducing Hydrocyanic Acid in Cigarette Smoke

为选择性降低卷烟烟气中氢氰酸(HCN)释放量,采用离子交换法制备了功能化螯合型离子交换树脂Mn+-Amberlite IRC748。利用原子吸收分光光度计(AAS)、比表面积及孔径分析仪(BET)、扫描电子显微镜(SEM)等方法分别对金属离子交换量、样品孔结构参数及表面形貌进行了表征。结果表明:IRC748对不同金属离子Mn+的吸附量大小顺序为Cu2+≥Zn2+>Co2+≥Fe3+,表明Cu2+最易与IRC748螯合。利用卷烟添加剂减害性能模拟装置评价了Mn+-IRC748对卷烟主流烟气中HCN的降低效果,结果表明:Cu2+-IRC748对烟气中HCN的降低效果可高达40%。卷烟应用实验结果表明,与对照卷烟相比,添加Cu2+-IRC748材料的试验卷烟主流烟气中HCN的降低率可达22.4%,而烟气常规成分释放量与对照卷烟基本一致,卷烟感观质量无明显差异。

Functionalized Mn＋ Amberlite IRC748 has been prepared by ion exchange for selectively reducing hydrogen cyanide（HCN） in cigarette smoke.By means of atom adsorption spectrometer（AAS）,BET surface area analyzer and scanning electron microscopy（SEM）,the exchange of metal ions,pore structure and surface morphology of Mn＋-IRC748 were characterized.The results showed that the transition metal ions in the order of adsorption amount by IRC748 were Cu2＋≥Zn2＋Co2＋ ≥Fe3＋,which indicated that copper ion was more active to chelate with IRC748.The assessment by imitation filter device demonstrated that HCN in mainstream cigarette smoke could be reduced by Mn＋-IRC748 and up to 40% of HCN could be reduced by Cu2＋-IRC748.The effects on reducing HCN from cigarette smoke were investigated by cigarette with a dual filter and the results indicated that 22.4% of HCN in cigarette smoke was reduced while the deliveries of nicotine and tar were almost unchanged,and there was no obvious sensory quality difference between experimental cigarette and the control cigarette.