固相微萃取气相色谱质谱法分析芒果中的香气成分

目的：研究芒果的香气成分。方法：用固相微萃取（solid-phase microextrations,SPME）和气相色谱质谱（gas chromatography and mass spectro metrometry,GC／MS）联用仪对芒果中的香气成分进行了分析。结果：共鉴定出9种化学成分。含量最多的三种物质是萜品油烯（80．68％）,δ-3-蒈烯（8．28％）,α-萜品烯（3．18％）。结论：芒果香气中主要成分为烯烃。     

固相微萃取-气相色谱-质谱法分析花红中的香气成分

目的：研究花红的香气成分。方法：采用固相微萃取（solid-phase microextrations,SPME）技术,结合气相色谱-质谱联用仪（gas chromatography-mass spectrometry,GC/MS）对花红中的香气成分进行分析。结果：共鉴定出7种化学成分。其中α-法呢烯（67.457%）、乙酸己酯（11.885%）、丁酸己酯（5.952%）为三种含量较多的成分。结论：花红香气中主要成分为烯烃和酯。     

固相微萃取-气相色谱-质谱法分析菠萝中的香气成分

目的：研究菠萝的香气成分。方法：采用固相微萃取（solid-phase microextrations,SPME）技术,结合气相色谱-质谱联用仪（gas chromatography-mass spectrometry,GC/MS）对菠萝中的香气成分进行了分析。结果：共鉴定出22种化学成分。辛酸甲酯（27.48%）、己酸甲酯（23.48%）、α-古巴烯（5.98%）为三种含量较多的成份。结论：菠萝香气中主要成分为酯和烯烃成分。     

固相微萃取/气相色谱/质谱法分析蔓荆子挥发性化学成分

目的:对蔓荆子挥发油的化学成分进行了分析。方法:采用固相微萃取/气相色谱/质谱(SPME/GC/MS)联用技术。结果:分离出81个组分,确认了其中64种组分,并用归一化法测定其相对百分含量,其相对含量占总挥发性组分峰面积的96.85%。结论:主要成分为:α-蒎烯(4.26%)、1,8-桉树脑5.90(%)、芳樟醇(3.59%)、莰烯(4.89%)、丁子香酚(2.18%)、β-石竹烯(14.72%)、β-古芸烯(2.56%)、双环吉马烯(4.35%)、α-雪松醇(11.29%)。     

固相微萃取气相色谱质谱法分析苗药土一枝蒿挥发性成分

目的：分析苗药土一枝蒿中的挥发性成分。方法：采用固相微萃取法提取苗药土一枝蒿中的挥发性成分,并用气相色谱-质谱法对其挥发性成分进行分析。结果：鉴定出72种化学成分,相对含量占总挥发性组分峰面积的97.24％,其中主要化学成分是β-倍半水芹烯（40.227％）、（Z, E）-α-大根叶烯（12.853％）、E -β-法尼烯（11.205％）等。结论：土一枝蒿的挥发性成分主要是萜烯类。     

用固相微萃取结合气相色谱-质谱联用技术法测定果上叶挥发性化学成分的报告

目的:研究贵州民族药物果上叶挥发性化学成分。方法:固相微萃取法提取挥发油,气相色谱-质谱联用技术对挥发油成分进行分离鉴定,并采用面积归一化法确定各成分的相对质量分数。结果:共鉴定出48种化合物,占总峰面积的53.84%.主要化学成分为2,6-二叔丁基对甲酚(17.490)、十六烷(10.478)、石竹烯(3.566)、柏木脑(3.536)。结论:本方法可用于果上叶中挥发性成分的快速分析,为进一步开发贵州民族药物果上叶提供了理论依据。     

顶空固相微萃取-气相色谱-质谱法测定知母的挥发性化学成分

采用顶空固相微萃取-气相色谱-质谱法分离和鉴定知母挥发油成分,用归一化测定其相对含量。共分离出64个组分,鉴定出57种化合物,其含量占总挥发油组分峰面积95.41%。主要挥发成分及其含量为抗氧剂264（24.05%）、正十六烷（15.67%）、乙酸松油酯（8.25%）、正十五烷（7.71%）。     

固相微萃取和气相色谱-质谱联用分析罗汉果浸膏的挥发性成分

目的　对罗汉果浸膏的挥发性成分进行分离分析鉴定。方法　采用固相微萃取和气相色谱 -质谱联用技术 ,在固相微萃取实验中使用 85μm聚丙烯酸酯作为萃取纤维 ,并对萃取时间、萃取温度、离子强度、解吸时间等实验条件进行优化 ,应用峰面积归一化法测定各组分的相对含量。结果　在 HP-5MS柱共鉴定出 3 8种化合物 ,主要成分为β-大马酮、β-二氢大马酮、糠醛、苯甲酸苄酯等。结论　本方法为罗汉果资源的合理使用提供了科学依据     

固相微萃取在生物体液分析中的研究进展

固相微萃取是一种无溶剂样品预处理技术.固相微萃取以其无需使用溶剂、样品用量少、有一定的富集作用等特点而受到广大分析工作者的关注.本文着重综述了该方法的装置、原理、影响因素及其应用,尤其是在使用气相色谱-质谱联用、高效液相色谱-质谱联用技术分析生物体液中的应用.     

辛夷指纹图谱的顶空固相微萃取气相色谱联用初探

目的 建立辛夷气相色谱指纹图谱,对顶空-固相微萃取条件进行优化.方法 采用顶空-固相微萃取技术直接提取辛夷中的挥发性成分,再进行气相色谱分析.结果 采用PDMS/DVB涂层,80℃时,萃取50min效果较好.结论 该方法操作简便,取样量小,无试剂污染,可用于辛夷中挥发性成分的指纹图谱研究.     

Degradation products of different water content sevoflurane in carbon dioxide absorbents by gas chromatography-mass spectrometry analysis

Background  Sevoflurane is currently used as a volatile inhalation anesthetic with many clinical advantages. A representative degradation product, compound A, was quantitatively measured to investigate whether there are different reactions between two kinds of water content sevoflurane formulations with different carbon dioxide (CO₂) absorbents.

Methods  A closed-circle breathe bag with the Dräger Fabius GS anesthesia apparatus was used as an artificial rubber lung. The experiments were grouped according to different sevoflurane formulations: group A: higher-water sevoflurane (Ultane); group B: lower-water sevoflurane (Sevoness). During the experiment, CO₂ (200 ml/min) was continually perfused to keep the end-tidal pressure of CO₂ (P_ETCO₂)at 35–45 mmHg. The artificial ventilation was set to 6 L/min, and the breathing rate at 12 breaths/min. The circuit was operated with constant fresh gas flow rate (1 L/min) and the sevoflurane concentration was kept at 1.0 minimum alveolar concentration (MAC) for 240 minutes. At 0, 10, 20, 30, 60, 90, 120, 180 and 240 minutes, gas was collected from the Y-piece. Gas chromatography/mass spectrometry (GC/MS) was used to quantify the major degradation product, compound A, with different water content sevoflurane. P_ETCO₂ and sevoflurane concentration, and the temperature of the canister were continuously monitored during the experiment.

Results  There were no significant differences in P_ETCO₂ and sevoflurane concentrations between the two groups. Drägersorb 800 plus produced the highest concentrations of compound A compared with other sodalimes, and Sevoness in Drägersorb 800 plus generated more compound A than Ultane (P <0.05). There were significant differences in the peak and average compound A concentrations between Ultane and Sevoness with Drägersorb 800 plus (P <0.05), while the compound A concentration produced by Sodasorb grase and sofonolime in the two groups showed no significant difference (P >0.05). In the same group, the peak and average of compound A concentration produced by Sodasorb grase and sofonolime showed significant difference with Drägersorb 800 plus (P <0.05).

Conclusion  The water content of sevoflurane and potassium hydroxide in CO₂ absorbent can influence compound A production.