Effects of Environment Humidity on Physical and Chemical Characteristics and Smoking Quality of Cigarette

The effects of environment humidity on physical and chemical characteristics and smoking quality of cigarette were studied under given temperature(22℃),the relationships between the changes of free nicotine,nicotine and pH values of cigarette smoke and its smoking quality were emphatically analyzed.The results showed that:1) environment humidity was positively correlated with cigarette weight and draw resistance;2) under the circumstances where air humidity was low,the contents of moisture,nicotine and tar in smoke decreased,while the ratio of tar/nicotine increased;under the circumstances where air humidity was high,the contents of moisture,tar and the ratio of tar/nicotine in smoke increased,while nicotine reduced evidently;3) environment humidity obviously affected cigarette smoking quality,and the ratio of free nicotine to nicotine significantly positively correlated with taste concentration and satisfaction.Under a circumstance of low air humidity,the lower the ratio of free nicotine to nicotine was,the higher the irritation of cigarette smoke would be.