热重-冷阱捕集-气相色谱/质谱法分析不同烟草基质受热过程中的逸出物  

Emission analysis from thermal decomposition of different tobacco materials by thermogravimetric analysis coupled cold trap and GC/MS

作　　者：王华[1] 罗福明[1] 黎玉茗[1] 李丹[1] 赵瑞峰[1] 李峰[1] 

机构地区：[1]广东中烟工业有限责任公司技术中心

出　　处：《烟草科技》2018年第1期50-58,共9页Tobacco Science & Technology

摘　　要：为研究温度对烟草热分解的影响,采用热重-冷阱-气相色谱/质谱(TGA-CT-GC/MS)联用技术,在氧气浓度为10%的氮/氧混合气氛下,对不同烟草原料(烤烟、白肋烟、香料烟、晒烟、再造烟叶基片)的烟丝进行热分析,利用冷阱捕集逸出物成分,然后进行GC/MS分析。结果表明:(1)在150℃左右时,表面的部分烟丝样品成分已发生热分解,300℃左右时完全炭化,香味成分得到有效释放;(2)烟碱的释放量随着温度的升高而逐步增加,在250℃及以上趋于稳定;(3)不同烟草原料的热解成分存在差异,逸出物中酸性成分与碱性成分的相对含量比值以晒烟最低,约为0.2,再造烟叶基片最高,约为2.6。To investigate the influence of heating temperature on tobacco decomposition, thermogravimetric analysis coupled with cold trap and gas chromatography-mass spectrometry （GC/MS） was used to study the thermal decomposition process of tobacco materials, including flue-cured, burley, oriental, sun-cured tobacco and paper based reconstituted tobacco in 10% oxygen and 90% nitrogen atmosphere. Released components from thermal decomposition were trapped by a cold trap linked to a pyrolyzer and qualitatively analyzed by GC/MS. The results showed that：1） Surface components in cut-tobacco decomposed initially at 150℃, carbonized at 300℃ followed by aroma component release. 2） The release of nicotine increased with the rise of temperature, and tended to be stable at or above 250℃. 3） Decomposition components from different tobacco materials were different in chemical compositions. The acidic/basic component ratio in the emissions was 0.2 （the lowest） for sun-cured tobacco and 2.6 （the highest） for paper base of reconstituted tobacco.

关 键 词：烟草 热重分析 热分解 冷阱捕集 气相色谱/质谱 逸出物 加热非燃烧烟草制品 

分 类 号：TS411.2[农业科学—烟草工业]