【摘要】 采用自由基交联和溶胶 凝胶技术,成功制备了乙烯基单苯并 15 冠 5(AB15C5)新型固相微萃取(SPME)涂层.用其对葫芦巴浸膏的挥发性成分进行萃取,用气相色谱/质谱(GC/MS)联用技术进行分离分析,共鉴定出29种化学成分,主要成分有4 乙基苯酚、丁酸乙酯、邻苯二甲酸二丁酯、2,4 双(1,1 二甲基乙基)苯酚、苯甲酸苄酯、9,12 十八碳二烯酸乙酯、二氢 5 苯基 2(3H)呋喃酮、邻苯二甲酸二乙酯等.在固相微萃取实验中对萃取时间、萃取温度、解吸时间、离子强度等实验条件进行了优化,并与商用PA涂层进行了比较.更多还原

【Abstract】 Appling radical cross-linked and sol-gel technique, a novel solid-phase microextraction fiber with 3′-allylbenzo-15-crown-5 was successfully used to extract fenugreek concrete. volatile components were analyzed by GC/MS, and their relative contents determined by area normalization, 29 constituents were identified, which accounted for (91.45%) of concrete. 4-ethyl phenol, ethyl butyrate, dibutyl phthalate, 2,4-bis(1,1-dimethylethyl)phenol, ethyl 9,12-octadecadienoate, dihydro-5-pentyl-2(3H)furanone, etc were the major volatile components in the concrete . In SPME experiments, The factors affecting quantitative results, including absorption time, absorption temperature, ionic strength and desorption time are discussed. Results obtained from different SPME extraction fibers were also compared. SPME with 80 μm crown ether fiber gave the most desirable results.更多还原