基于SPME技术的环境烟草烟气标志物的环境行为探究  

Study On the Environmental Behave of Marks of Environment Tobacco Smoke Base on Solid Phase Micro Extraction(SPME)

作　　者：赵恒[1] 孙彤舟 王珊珊[1] 陈宏[1] 周斌[1] 

机构地区：[1]复旦大学环境科学与工程系上海市大气颗粒物污染防治重点实验室,上海200433

出　　处：《复旦学报（自然科学版）》2013年第6期845-851,共7页Journal of Fudan University：Natural Science

基　　金：上海烟草(集团)有限责任公司卷烟烟气重点实验室开放基金(SZBCW2011-00778);国家自然科学基金资助项目(21277029;40975076)

摘　　要：利用1．8m3的烟雾箱，在对流通风、密闭以及单边通风的条件下，利用固相微萃取（SPME）技术对环境炯气（ETS）中的尼古丁、3-EP和2，5-二甲基呋喃等3种标志物在不同通风条件下的浓度变化进行分析．研究结果发现，在模拟门窗全开的对流通风条件下，烟气扩稀释、散速率最大，上述3种烟气标志物的寿命分别是1．31、1．5h和1．32h．而在模拟门窗全部关闭的密闭烟雾箱条件下，烟气的扩散、转化最慢，以上3种标志物的寿命分别达到3．52、7．18h和3．29h．但是无论是对流通风还是密闭条件下，经过8～10h的扩散、转化后，在烟雾箱内，上述3种标志物仍然存在一定的浓度，主要原因是烟雾箱的壁对烟气的吸附，然后再解吸附，将烟气成分释放出来，这也是“三手烟”的主要来源．比较3种烟气标志物，尼古丁在3种实验条件下的寿命均最长，说明尼古丁对环境的持续危害性最大．Based on Solid Phase Micro Extraction （SPME） technique, three indicators of environmental tobacco smoke （ETS）, nicotine, 3-ethenalpyridine and 2,5-dimethylfuran, were studied in a 1.8 m3 smog chamber under different ventilation conditions. When the door and window of the chamber were opened, the lifetime of nicotine, 3-ethenalpyridine and 2,5-dimethylfuran were 1.31,1.52 h and 1.32 h respectively. Under the condition of closed door and window, the diffuse and convertion of ETS are lowest, and the lifetime of these three ETS indicators became 3.52,7.18 h and 3.29 h respectively. Either in opening or closing condition, nicotine, 3-ethenalpyridine and 2,5-dimethylfuran in chamber can still be detected even after 8--10 h diffusion and convention due to the adsorption and re-emission of the chamber wall. This is also the primary source of the so called ＂third hand smoke＂. Compared with 3-ethenalpyridine and 2,5-dimethylfuran, the nicotine existed for longest time under three different conditions, which indicates that the continuous harmful effect of nicotine to environment is most serious.

关 键 词：环境烟气 固相微萃取 烟气标志物 烟雾箱模拟 

分 类 号：X51[环境科学与工程—环境工程]