芳烃

In the second chapter, twelve compounds constructed by arenedisulfonates and metal ions such as alkali, alkaline earth and transition metal ions have been synthesized and structurally characterized.

第二章描述了在水溶液条件下芳烃二磺酸根离子与碱金属离子、碱土金属离子和过渡金属离子形成的十二个化合物的结构。

In the course of our study the chemistry of arenes contaning allylic acetates moiety under the catalysis of palladium, we found an efficient synthesis of benzocycles via intramolecular Friedel-Crafts reaction of halogen free 6-acetoxy-4alkenyl arens.

我们在设计钯催化的碳—氢键活化时，发现了含有烯丙基醋酸酯侧链的芳烃的三氟醋酸促进的分子内的Friedel-Crafts反应，从而为有效合成苯并六元环结构提供了一个方便的方法。

S. EPA priority pollutants and are powerful carcinogenic substances. Various alkyls PAHs as well as heterocyclic hydrocarbons were also detected.

未取代的多环芳烃含量为主，其中大部分属于美国环保局提出的优先控制污染物，属强致癌和可能致癌物质。

That polyring aromatised hydrocarbons, dehydroabietic acid, other tricyclic diterpanoic acids and pentacyclic triterpanoic acids are not existed or in a much low amount in Zhaotong brown coal resin is distinguished from those resins isolated in Xundian, Liaohu, Shulan brown coal waxes in China.

稠环芳烃、松香酸、去氢松香等环状化合物含量很低或不存在，是昭通褐煤蜡与国内其它褐煤蜡组成的重大差别。

These substituents are either small groups such as phenoxy groups,aryls,cyclic secondary amines,cyano groups,and halogens or large functional moieties such as PDI,Phthalocyanines, porphyrins,BODIPY,cyclodextrin,Fullerene,calixarene,and so on.

这在过去的工作中，人们把一些小分子的，如酚氧基、仲胺基、苯基、氰基以及卤素氟、氯、引入到PDI中，同时也把一些较大功能团，如PDI本身、卟啉、酞菁、环糊精、BODIPY、杯芳烃、富勒烯等和PDI连接在一起。

The influence of calibration constant K,spectrum region selection and spectrum prepro- cessing on the veracity of a calibration model when establishing a model for rapidly determining aroma composition in naphtha by near-infrared spectroscopy are analyzed.

在采用近红外光谱建立石脑油芳烃含量校正模型的过程中，分析讨论了校正系数K值、光谱区域选取及光谱预处理方法对校正模型准确性的影响。

"Diazo:Relating to or containing a pair of bonded nitrogen atoms, one of which is also bonded to an aromatic hydrocarbon."

&重氮的：关于或含有一对结合的氮原子的，其中一个还结合一个芳烃。&

Fat drippings create smoke that is filled with carcinogenic polycyclic aromatic hydrocarbons, or PAHs.

烧烤时滴落的脂肪会产生充满多环芳烃的烧烤烟。

The synthesis method of calixcrown ethers was simplified and improved, and 10 Lscale synthesis was carried out.

对杯芳烃冠醚的合成工艺进行了简化和改进，并进行了10L规模的中间放大合成。

However, in contrast with the extensive employment of cyclodextrins and crown ethers, the application of calixarenes in CE was limited.

但与环糊精和冠醚的广泛应用相比，杯芳烃在毛细管电泳中的应用研究才刚刚开始，是一个有待开发的新领域。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。