丁苯橡胶废水中有机物的定性分析

固相萃取(SPE)技术与气相色谱-质谱(GC-MS)、气相色谱-傅立叶红外光谱(GC-FTIR)技术结合,用于丁苯橡胶(SBR)生产过程中废水中的有机物的定性分析.每次使用0.18～0.15 mm粒径的GDX-502吸附剂2 g,1000 mL废水,25 mL二氯甲烷进行洗脱,洗脱液浓缩至1 mL后用于GC-MS和GC-FTIR定性分析.分离在50 m×0.20 mm i.d.×0.5 μm的HP-PONA柱上进行.从SBR废水中确定23种化合物,GC-MS与GC-FTIR联用,提高了定性的准确度.     

山苍子核仁油的大口径毛细管柱气相色谱—傅里叶变换红外光谱分析

本文采用国产色谱仪与进口红外光谱仪及接口加工组成气相色谱－傅里叶变换红外光谱分析仪，使用大口径弹性石英毛细管柱，分析了湖南省永顺县产山苍子核仁油的组成，讨论了利用等高线图分析技术及差谱技术处理ＧＣ－ＦＴＩＲ分析数据的方法，得出了其中约８０多个组分的纯化合物气相红外光谱图，定性了其中３８种物质，占总色谱峰面积的９０％以上。     

全二维气相色谱在食品风味化学成分分析中的应用

食品风味是评价食品品质特征的重要指标。食品风味物质分析通常采用一维气相色谱或气相色谱-质谱联用法,但由于某些食品风味成分组成和基质复杂,无法用一维气相色谱将其完全分离。全二维气相色谱将分离机理不同而又相互独立的两根色谱柱以正交方式组合,显著提升了色谱分离能力和分析速度,可满足食品中风味化学成分的二次分离。该文综述了全二维气相色谱技术在未经二次加工的食用农产品(如水果、蔬菜和肉类)和经过二次加工的食品(如乳制品、饮品和调味品)中风味化学成分分析中的应用,展现了全二维气相色谱技术的特点,并为食品风味的解析提供参考。     

生物制药研究中的多维色谱

对全二维气相色谱(GC×GC)、全二维液相色谱(HPLC×HPLC)、多维毛细管电泳等多维分离技术在生物制药研究中的应用进行了综述,其中对作者所在研究组在全二维气相色谱应用于中药及固相萃取-液相色谱联用分析系统等方面的工作做了重点介绍。由所综述的生物制药研究得出结论：多维分离方法以其高分辨、快速、自动化等特点已经在生物制药领域显示出它的巨大优势,并将发挥更大的作用。     

浅谈消费产品中挥发性有机物质检测技术

首先介绍了消费品产品检测中几种常见的挥发性有机物质(VOCs)检测技术,其中包括顶空-气相色谱-质谱法、吹扫捕集-气相色谱法、热解析-气相色谱-质谱法、液相色谱-二级管阵列检测法等技术,并介绍了这几种检测技术的原理、适用样品及浓度范围,详述各种检测技术的优缺点。并针对汽车内饰物中,使用热解析-气相色谱-质谱法测定苯系物和液相色谱-二级管阵列检测法测定醛酮类物质进行挥发性有机物质的同时检测,做了初步探讨。     

大气颗粒物中有机污染物分析技术研究进展

对颗粒物中常见有机污染物组成、来源及其分析技术进行总结。介绍了常见有机污染物的滤膜采样技术、前处理技术(溶剂萃取和热脱附)和色谱检测技术及所存在的问题。热脱附气相色谱–质谱联用技术在同时测定大气颗粒物中多环芳烃、正构烷烃等半挥发有机物方面具有明显优势。     

吹扫捕集-GC/MS测定生活污水及饮用水中的挥发性有机物

采用吹扫捕集.气相色谱/质谱联用技术(P&T-GC/MS)分析生活污水及饮用水中的挥发性有机物(VOCs).混合吸附剂富集.混合吸附剂是由TenaxGC+硅胶+活性炭组成,三者体积比2:1:1.从生活饮用水中检出了26种挥发性有机物,其中8种列在我国环境属优先污染物中.     

《色谱》第9卷(1991年)分类索引

色谱应用相关分析技术检测噪声中的徽弱色谱信号 气相色谱戴朝政涧在箔、卢佩章、李浩春(5)292石英毛细管气相色谱中的双峰现象-一种可能的溶剂效直拐型液相填充毛细管柱一质谱联用接口的设计(实验与应陆妙琴、龙翅庭、G.A.E淞~、R.v.Hof~(l)l4技术)关亚风、王加宁、田玉增、周良模(1)39气相色谱一微波等离子体发射光谱研究1.元素响应值与应用分析化合物结构的关系黄业茹、俞惟乐(3)1 41·有帆、无机气相色谱一裂解气相色谱联用定性参数的研究低分子醉、澳代烷及叔胺混合物的气相色谱分析 杨泽东(峨)225崔庆新、马殿英(5)331迎头色谱技术…     

多种气相色谱联用技术分析陕西刺五加茎挥发油的化学成分

采用气相色谱/四极杆质谱(GC/qMS)、气相色谱/正交加速飞行时间质谱(GC/oaTOFMS)和气相色谱/傅里叶变换红外光谱(GC/FTIR)联用技术,对一种陕西产刺五加Acanthopanax senticosus (Rupr. et Maxim.) Harms茎挥发油的化学成分进行了分析。基于GC/qMS谱库的检索功能,结合GC/FTIR在结构鉴别上的优势和GC/oaTOFMS对质谱碎片离子精确的质量测定功能,成功地实现了对68个色谱组分的定性分析。与使用单一的联用技术(例如GC/qMS)相比,利用多种色谱联用技术在定性分析上的互补性,可以明显提高对组成复杂的挥发油类样品分析的可靠性。     

甲基氯硅烷初产品的组成分析

以气相色谱和色谱-质谱联用技术分析了甲基氯硅烷初产品的组成,对于其中的2-甲基-2-丁烯与甲基二氯硅烷的色谱重叠峰,采用醇解反应处理,并以样品中不会醇解的四甲基硅烷做参照来计算其含量。     

Lipids of cottonseed and palm oils and compositions based on them

The phsicochemical indices and the fatty-acid and triacylglycerol compositions of cottonseed and palm oils, of cottonseed oil hydrogenate, and of compositions based on them have been determined with the aid of IR and UV spectroscopies, GLC analysis, and chemical transformations. The compositions and amounts of the main classes of lipids in the initial oils and the hydrogenate have been studied. It has been found that in the process of hydrogenation the amount of oxygenated components falls. The work was conducted with the financial support of the Uzbek Fund for Fundamental Investigations.     

芸香草精油化学成分的研究

芸香草(Cymbopogon distans(Nees)W.wats)系多年生禾本科香茅属植物,分布于我国甘肃、陕西和西南及印度等地~[1].芸香草含芳香油,可提制香精油,是香料及化妆品工业的重要原料,芸香草还可入药,有较大的开发价值.Melkani等~[2]曾指出,不同地区生长的芸香草精     

IR and Raman studies of oil and seedcake extracts from natural and genetically modified flax seeds

Flax plant of the third generation (F3) overexpressing key genes of flavonoid pathway cultivated in field in 2008 season was used as the plant material throughout this study. The biochemical properties of seed, oil and seedcake extracts from natural and transgenic flax plants were compared. Overproduction of flavonoids (kaempferol), phenolic acids (coumaric, ferulic/synapic) and lignan-secoisolariciresinol diglucoside (SDG) in oil and extracts from transgenic seeds has been revealed providing a valuable source of these compounds for biotechnological application. The changes in fatty acids composition and increase in their stability against oxidation along three plant generations were also detected. The analysis of oil and seedcake extracts was performed using Raman and IR spectroscopy. The wavenumbers and integral intensities of Raman and IR bands were used to identify the components of phenylpropanoid pathway in oil and seedcake extracts from control and transgenic flax seeds. The spectroscopic data were compared to those obtained from biochemical analysis.     

IR spectroscopy on jet-cooled isolated two-station rotaxanes

High-resolution IR spectroscopy has been employed to study isolated, switchable [2]rotaxanes. IR absorption spectra of two-station rotaxanes, their separate thread, and macrocycle components, as well as those of the individual stations incorporated into the thread, have been measured in the 1800-1000 cm(-1) region. These spectra have been fully analyzed, aided by quantum chemical predictions of the IR spectra. From these analyses, a comprehensive picture emerges of the conformational structure and binding interactions between the mechanically interlocked components of the rotaxane.     

桃核中脂肪酸成分分析

：通过GC－MS方法对桃核（核壳，桃仁，种皮）中的脂肪酸化学成分进行分析。鉴定出各种脂肪酸成分及其相对含量，主要成分为棕榈酸，硬酯酸，亚油酸，亚麻酸，油酸等。     

Analysis of organic colouring and binding components in colour layer of art works

Two methods of analysis of organic components of colour layers of art works have been tested: IR microspectroscopy of indigo, Cu-phthalocyanine, and Prussian blue, and MALDI-TOF-MS of proteinaceous binders and a protein-containing red dye. The IR spectra distortion common for smooth outer surfaces and polished cross sections of colour layer of art works is suppressed by reflectance measurement of microtome slices. The detection limit of the three blue pigments examined is ~0.3 wt% in reference colour layers in linseed oil binder with calcite as extender and lead white as a drying agent. The sensitivity has been sufficient to identify Prussian blue in repaints on a Gothic painting. MALDI-TOF-MS has been used to identify proteinaceous binders in two historical paintings, namely isinglass (fish glue) and rabbit glue. MALDI-TOF-MS has also been proposed for identification of an insect red dye, cochineal carmine, according to its specific protein component. The enzymatic cleavage with trypsin before MALDI-TOF-MS seems to be a very gentle and specific way of dissolution of the colour layers highly polymerised due to very long aging of old, e.g. medieval, samples.     

Imprinted sol-gel materials for monitoring degradation products in automotive oils by shear transverse wave

Titania sol-gel layers imprinted with capric acid have been used as synthetic receptors for highly sensitive detection of oxidized products resulting from degradation of automotive engine oil. These layers have been applied as sensitive coating material on shear transverse wave (STW) resonators of frequencies ranging from 100 MHz to 430 MHz. A relatively small size of STW resonators, i.e. about 2 mm for 430 MHz makes these devices extremely useful while considering the concept of miniaturization. It has been proved experimentally that by increasing fundamental resonance frequency of these devices, a very high sensor response i.e. 22 kHz up to 460 kHz can be generated. The geometry of long chain capric acid fits best as recognition element in the synthesis of imprinted TiO₂ network. The thin titania layers coated on transducer surface provide excellent diffusion pathways to oxidized products of waste engine oil for selective and reversible re-inclusion i.e. recovery time of 30 min. Viscosity effects of oxidized engine oil can be minimized by shear waves which do not dissipate considerable amount of energy that ensure smooth liquid phase operation. Different oxidized products i.e. carbonic acids and esters can be characterized in lubricant via infra-red (IR) spectroscopy. The increasing IR absorbance of different waste oil samples is a clear indication of increasing concentration of carbonyl group. The IR absorbance of carbonyl groups is directly correlated to the age of respective waste engine oil samples and a quantitative relationship between sensor responses from STWs and IR absorbance was also developed.     

墓头回挥发油化学成分的研究

墓头回也叫箭头风,为败酱科植物异叶败酱[Patrinia Heterophylla Bge.]和糙叶败酱[PatriniuScabra Bge.]的根,能治伤寒、温疟,妇女崩中,赤白带下,跌打损伤等疾病,对艾氏癌细胞有抑制及伤害作用。墓头回挥发油的化学成分尚未见报道。本文采用毛细管气相色谱-质谱法对墓头回挥发油的化学成分进行了研究。色谱分离出50多个组分,质谱确定了其中30个组分的化学成分,占总色谱流出峰面积的56.32％。此外还有10个结构尚未完全确定的倍半萜烯,占色谱总流出峰面积的8.50％;3个倍半萜烯醇,占色谱总流出峰面积的4.71％;2     

HRGC and GC–MS analysis of essential oil from colombian ylang-ylang (Cananga odorata Hook fil. et Thomson,forma genuina)

Samples of essential oil from Colombian ylang-ylang trees were analyzed by means of HRGC, HRGC–MS, IR and ¹H- and ¹³C-NMR. 57 components were detected, 51 of which were positively identified. Camphene and anethol were identified in ylang-ylang essential oil for the first time. Among the composition-determining variables studied (extraction time, part of the flower, and flower freshness), the extraction time and the flower condition (fresh versus dry) were found to have the largest incidence in the quality of the essential oil.