辽宁不同地区的大蒜挥发油成分GC／MS分析

The volatile oil constituents of the Allium Sativeum with Liaoning different districts were analyzed by GC/MS.The results indicate that there are a lot of same volatile constituents of the AlliumSativum with different districts, moreover, the different of the volatile constituents with the different districts are obviously.     

固相萃取GC／MS方法分析水中神经性毒剂水解产物

神经性毒剂是化学毒剂中主要杀伤性毒剂,由于神经性毒剂在水中易水解,因此,除检定染毒水中毒剂原型外,检定其水解产物同样重要。选用梭曼(Soman)等5种主要神经性毒剂的水解产物IMPA、PMPA、EMPA、i-BuMPA、CHMPA和它们的二级水解产物MPA等6个化合物为靶子。由于水解产物极性大,水溶性较好,提取较困难,本文开展固相萃取GC／MS法的研究。     

GC／MS分析黄杨花精油成份

Evonymusjoponica Thunb. belongs to the pant of Celastraceae and spreads in China broad. The root of this plant is used as medicine usually. It can regulate menstrual cycle and clear up blood lump. The whole plant is often cultivated as green fence. The flower blossoms from June to July. During this time the flower can attract a lot of the fly of Lucitia sericata, even the flower covered by fly. This phenomenon is strange and is interested by us. Because the components of the flower have not been reported as yet, we identified them by means of GC/MS.     

GC和GC／MS对新疆不同产地大麻成分的分析研究

本文报道应用GC和GC/MS对南疆24个县市的9种大麻样品的分析比较,得到30个色谱峰,认定了17个化合物,并用峰面积归一化的方法对其成分进行定量,为刑事侦察、评价大麻质量和正确开发利用提供依据。     

柏木油中同分异构体的GC／MS分析

本文利用GC／MS技术,对柏木油中的主要产物α—柏木烯、β—柏木烯、罗汉柏烯等同分异构体进行分离定性,共定出19个组份。     

有机磷农药残留物的GC／MS,GC／MS／MS分析

１前言随着全球环境意识的增强,人们对农产品、水果、茶叶等物质上的农药残留物的要求越来越高,特别是近年来欧盟、北美等发达国家通过加强进口商品的检验来进行贸易战的事件时有发生。如最近有报道,我国出口欧盟的茶叶因农残超标被退回,出口瑞典的酱油因化验出致癌物质而遭禁,故加强我国对复杂样品中农药残留物分析方法的开发十分重要。有机磷农药是常用的农用杀虫剂,在各种农作物和环境样品中的含量很低,目前利用ＧＣ／ＭＳ技术分析农作物和环境样品中的农药残留物越来越普遍,因为它能给出化合物的结构信息,有利于化合物的定性。…     

正交试验优选半枝莲超临界二氧化碳萃取条件及GC/MS分析

本文采用正交设计法,对半枝莲挥发油超临界CO2流体提取工艺参数进行优化,并对萃取产物的化学成分进行GC/MS分析。正交实验设计萃取压力（A）、萃取温度（B）、药材粒度（C）作为3个因素,每个因素选3个水平,以挥发油的得率来确定最优化提取条件。用GC-MS分析技术对半枝莲超临界萃取产物进行分离分析,采用MS谱库检索结合保留指数的方法对半枝莲超临界萃取成分进行结构鉴定,应用色谱峰面积归一化法确定萃取产物中各成分的峰面积百分含量。结果表明最优萃取条件：萃取压力30Mpa,萃取温度50℃,药材粒度40~60目。萃取产物GC-MS结果显示,半枝莲中除含高级脂肪酸及其酯类外,还含有大量的甾族化合物。本研究优化的萃取工艺稳定、可行;利用GC/MS分析技术,MS谱库检索结合保留指数鉴定结构的方法准确、快速。     

GC／MS／MS分析技术在石油地球化学研究中的应用

In Chinese petroleum geochemistry domain, GC/MS/MS technology is getting more and more attention from organic geochemist. We use this technology to measure some rock and oil sample taken from Liaohe or Tarim basin. We identified many series of biomarker with dividing-era significance. These series are C26 steranes, C30 methylsteranes; and methly hopanoid alkanes, hexacyclic hopanoid alkanes, which two series were measured first by our laboratory in China. More over, these biomarker components are not been found by GC/MS analysis method because of their tiny quantities. At the same time, on the others, research base, we lay particular emphasis on measuring and researching some new and with special geology significent biomarker. In order to put GC/MS/MS technology into a further application and research in petroleum exploration and development.     

硅烷偶联剂KH-550的GC/MS研究

本文通过ＧＣ对硅烷偶联剂ＫＨ－５５０进行研究,模索出最佳分离条件,分离出样品中含有的和项组分及含量,笛利用ＧＣ／ＭＳ联用技术和质谱裂解规律鉴定出样品各组分的分子结构。     

GC／MS定量分析芥子气

Quantitative analysis of mustard gas was carried out by gas chromatography /mass spectrometry (GC/MS). SIM standard curves were established by internal and external standards separately.     

SCF-PAH的GC／MS分析

多环芳烃类（PAH）包含大约250种不同的化合物，其中一些被证实具有致癌作用。环境中的PAH（EPA-PAH）的危害已引起广泛关注，而食品中PAH（SCF-PAH）残留物分析，也是一个非常重要的课题。     

超临界CO2萃取鸡骨柴精油正交试验及GC/MS分析

应用超临界CO₂萃取技术研究了鸡骨柴精油的萃取工艺,最佳萃取条件为压力15 MPa、温度45 ℃、萃取时间1.5 h、CO₂流量5 mL•min^-1,在此工艺条件下超临界CO₂萃取法得到的鸡骨柴精油收率为2.87%。利用气相色谱-质谱联用法对鸡骨柴萃取物的化学组成进行分析, 用归一化法测定其相对百分含量,共分离出44种成分,鉴定了其中的38种成分, 占出峰物质总量的96.46%,主要成分为对聚伞花素（19.34%）、顺式-石竹烯（18.23%）、β-蒎烯（7.10%）、香荆芥酚（5.63%）、百里香酚（6.48%）、3-辛酮（5.26%）等。并且在鸡骨柴精油中鉴定出十五烷醇乙酸酯（0.86%）,乙酸十二烷基酯（0.29%）,9,12-亚油酸甲酯（1.58%）,9-十八烯酸甲酯（0.84%）,9-十八碳烯酸（0.92%）等成分。     

提高GC／MS分析可靠性的辅助定性方法

利用色谱保留指数和色谱－付立叶交换红外光谱法（GC－FTIR）可提高GC／MS分析的可靠性，本文叙述了这两个方法的原理和应用实例。     

烟草抽取物的GC／MS分析

In this paper, tobacco abstraction in dichormethane was analyzed with GC/MS. Fifty compounds have been identified. The results are useful to study tobacco component and adjust tobacco flavor.     

啤酒中氨基酸衍生物的GC／MS分析

本文利用色谱—质谱联用技术及电子轰击电离和化学电离方法,对啤酒中十一种主要氨基酸衍生物进行了分析鉴定,为气相色谱法分析氨基酸提供了定性依据。     

桔皮甙的裂解GC／MS分析

本文将居里点裂解器与GC／MS联用,对烟草提取物桔皮甙的热解产物进行分析,共检出12个组份。