在线裂解气相色谱-质谱法研究单琥珀酸薄荷酯的裂解行为  

On-line Investigation of the Pyrolysis Behavior of Monomenthyl Succinate by Pyrolysis-Gas Chromatography-Mass Spectrometry

作　　者：吴亿勤[1] 杨柳 刘芳[1] 缪明明 朱洪友[1] 

机构地区：[1]云南大学化学科学与工程学院,昆明650091 [2]红塔烟草(集团)有限责任公司技术中心,玉溪653100

出　　处：《分析化学》2007年第7期1035-1038,共4页Chinese Journal of Analytical Chemistry

摘　　要：采用在线裂解气相色谱-质谱联用技术对单琥珀酸薄荷酯的裂解行为进行了研究。在氦气氛围中,分别在300、400、500、600、700、800和900℃下对单琥珀酸薄荷酯进行热裂解,并通过毛细管气相色谱-质谱对裂解产物进行了定性和半定量分析。共鉴定出薄荷醇、p-薄荷-3-烯和琥珀酸等75种裂解产物。结果表明,单琥珀酸薄荷酯在700℃以下裂解出薄荷醇、p-薄荷-3-烯和3-甲基-6-异丙基环己烯等具有致香和清凉作用的物质;而700℃以上没有释放出致香物质。随着裂解温度的升高,裂解产物越来越复杂,有害物质如苯、甲苯、蒽和荧蒽等的含量也逐渐增加。此方法可直接进样,重现性好(相对标准偏差≤2.01%)。根据裂解产物的种类及相对含量变化规律,探讨了裂解成分的形成机理。The pyrolysis behavior of monomenthyl succinate was investigated by on-line pyrolysis-gas chromatography-mass spectrometry （PyGC-MS） in the presence of helium. GC-MS was used for the qualitative and semi-quantitative analysis of the pyrolysis products of the compound at 300, 400, 500, 600, 700, 800 and 900℃. There are altogether 75 pyrolysis products were detected, including menthol, p-menth-3-ene and succinic acid. The results indicated that flavorous and refreshing substances, such as menthol, p-menth-3-ene and 3-methyl-6-isopropyl-cyclohexene, were released from parent compound under 700℃. However, above this temperature, favor was not found in the pyrolysis products. Moreover, with the raise of pyrolysis temperature, complicated pyrolysis products appeared anthracene and fluoranthene, were also increase , and the content of harmful substances, such as benzene, d. This method possesses the merits of easy operation and good repeatability（RSD ≤2.0% ）. According to the relative content and category of the pyrolysis products, the possible pyrolysis mechanism of monomenthyl succinate was also discussed.

关 键 词：单琥珀酸薄荷酯 裂解气相色谱-质谱联用 热裂解行为 烟草添加剂 

分 类 号：O621.25[理学—有机化学]