【作者】 张志玲；

【作者基本信息】 中国农业大学 ， 食品科学与工程， 2005， 硕士

【摘要】 一氧化碳是导致吸烟者心脑血管疾病和“烟醉”的主要原因,也是孕妇抽烟或被动抽烟时最主要的健康危险品。另一方面,欧盟成员国形成的决议要求,市售卷烟的烟气焦油、烟碱和CO量分别不超过10、1和10mg/支。目前我国卷烟产品的CO释放量大致在10～16mg/支之间,离欧盟成员国的要求还有一定的差距。这对我国卷烟产品打入国际市场将是个巨大的障碍和技术壁垒。因此,现今研究如何有效地脱除卷烟烟气中的一氧化碳,非常迫切和必要。 壳聚糖基金属配合物材料存在刚性结构,配合物中金属离子d轨道尚未饱和,还能与配体如一氧化碳等通过配位键作用生成新的配合物。利用壳聚糖基金属配合物材料作为一氧化碳的吸附剂,在理论上具有很大应用潜力。 本文用模型实验方法验证了壳聚糖基金属配合物材料对一氧化碳的吸附性能,并初步探索了其在卷烟上添加应用的可行性。结果表明: 壳聚糖基金属配合物材料在温度为55℃左右、配合物粉末颗粒度在70目左右、配合物中金属组分含量较高时,对一氧化碳具有较好的吸附性能;配合物添加在卷烟滤嘴中,能较好地降低卷烟主流烟气中的CO含量。其中以壳聚糖基亚铁配合物的效果为最佳,在本实验的操作条件下降CO效果达2.0mg/支左右(CO降低百分率为12.6%),同时选择性也比较好,对烟碱、水分等其他质量指标的影响不大;并且在滤嘴中添加壳聚糖基金属配合物后,卷烟烟气的刺激性和杂气明显降低、协调性变好,光泽、香气和余味变化不大,整体的感官品质提高。但对于壳聚糖基金属配合物材料吸附CO的机理以及壳聚糖基金属配合物材料在卷烟滤棒生产上的添加应用工艺等方面尚需进一步深入系统的研究。更多还原

【Abstract】 Carbon monoxide is the leading reason for a smoker to have diseases in heart and head blood vessels and to get smoke drunk. And it’s also a healthy danger for a pregnant woman who smokes or passively smokes. On the other hand, it is very important and necessary to research how to eliminate carbon monoxide in cigarette smoke also with the pressure from international. If there is no better way to control carbon monoxide under 10mg per cigarette which is now mostly among 10mg and 16mg per cigarette in our country, it will be a huge obstacle or technical rampart for our cigarette products to drive into international markets.Chitosan metal complex exists rigidity structure, in which the metal ion’s track d is still unsaturated and is able to attach such things by coordinate bonds as CO etc. So it is possible that chitosan metal complex may have a great potential of being used as a CO sorbent in theory.In this paper, the adsorption capability of chitosan metal complex to adsorb CO was validated by a simulated experiment. And the application feasibility in cigarettes was superficially attempted.Results show that it had a better adsorption capability as the chitosan metal complex had a higher metal ion content and as its granularity about at 70 mu and the system temperature was around at 55 °C. Chitosan metal complex could efficiently eliminate the CO content in the cigarette mainstream smoke. The chitosan inferior iron ion complex had the especially good adsorption effect, which was reached to about 2.0mg per cigarette (or CO reduced 12.6 percent), simultaneously the selectivity was nice with little effect on the chemical quality index like nicotine, water, etc. The sense quality tests turned out that it had been improved in sense quality with irritation and impurity reduced, harmony increased and with luster, aroma and aftertaste stable in cigarette smoke. But which still needs to be further studied is the real mechanism of chitosan metal complex adsorbing CO and the technics of chitosan metal complex applied in cigarette filter tip.更多还原