芳烃

Finally, the methods of minimization and purification for PAHs are mentioned.

最后给出了多环芳烃减量化方法和净化措施。

Under the optimum conditions, good linear work curve was obtained by this method to determine four kinds of PAHs.

选择最大荧光峰值位置对四种多环芳烃做工作曲线，呈现较好的线性关系。

Production of epsilon-glycolylnium is carried out by Beckman rearrangement reacting for cyclohexanone-oxime under the existence of solvent to obtain epsilon-glycolylnium contained mixture, crystalline separating for the mixture to obtain crude epsilon-glycolylnium crystal, dissolving by arene, extracting by water, adsorbing by resin hydrogenation catalyzing to obtain the final product. The value of potassium permanganate is less than 5, extinction value is less 0.05, volatile alkali is less than 0.5meq/kg and alkalinity is less than 0.05meq/kg.

本发明涉及一种ε―己内酰胺制备方法，其特征为：在溶剂存在下，环己酮肟经贝克曼重排反应，得到含有ε―己内酰胺的混合物，该混合物结晶分离后，得到粗ε―己内酰胺晶体用芳烃溶解，然后用水萃取，再经树脂吸附、催化加氢后，得到99.995％以上的高纯度的ε―己内酰胺，其质量指标为高锰酸钾值小于5，消光值小于0.05，挥发性碱小于0.5meq/kg，碱度小于0.05meq/kg。

Production of environmentally-benign solvent naphtha up to the international quality specification,with low aromatics and low sulfur,will be the trends in this aspect.

由于应用领域的不同，溶剂油的产品规格各有不同，对造成环境严重污染的硫化物和芳烃的含量都有一定的限制。

Production of environmentally-benign solvent naphtha up to the international quality specification,with low aromatics and low sulfur,will be the trends in this aspect.

目前，我国溶剂油质量与国际溶剂油质量差距较大，生产符合国际质量标准的低芳烃和低硫含量的环保型溶剂油是今后发展的方向。

Aromatic solvent naphtha was obtained by two-stage synthesis from C9 fractions from ethylene cracking with boiling range of 100~200℃ in the presence of Lewis acid as catalyst.

以沸程在100~200℃乙烯副产C9馏分为原料，进行了以Lewis酸为催化剂的两段聚合法制备芳烃溶剂油工艺的研究。

This article has described the technology to prepare aromatie solvent naphtha by use of the C9 fraction (100-200℃ boiling range) as raw material, few is acid as catalyst, through a cationic polymerization.

本文介绍了利用沸程在100~200℃间的C9馏分为原料，以Lewis酸作为催化剂，进行阳离子聚合反应制备芳烃溶剂油的工艺。

The oil-extended rubber obtained from rubber aromatic oil is of good processibility with satisfactory mechanical properties.

橡胶芳烃油生产的充油橡胶具有良好的工艺性能和机械性能。

The development of environment friendly rubber oil is highly concerned by tyre manufacturers at home and abroad.

欧盟颁布的环保指令2005/69/ec提出，将于2010年1月1日起在轮胎和充油胶生产中全面禁用芳烃油等有毒橡胶油，环保橡胶油的研发引起国内外轮胎生产商的高度关注。

16 PAHs in the leaves of 9 kinds of broadleaved plants from Baiyun Mountain in Guangzhou were separated and analyzed quantitatively by GC-MS.

采集了白云山9种阔叶植物叶片样品，利用GC-MS对样品中的多环芳烃进行了定量分析。

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。