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- In some cases, they were either high-molecular-weight polymer or large aggregates of polynuclear aromatic molecules. 而積碳的性質(zhì)極其復雜，它和形成的條件息息相關(guān)。
- Many constituents are mutagens and carcinogenic such as alkenes, nitrosamines, polynuclear aromatic and heterocyclic hydrocarbons, amines . 煙草的很多成分都會(huì )引起有機體突變以及致癌;如烯烴化合物;亞硝胺;多核芳香烴以及多環(huán)碳氫化合物和銨.
- Polynuclear Aromatic Hydrocarbons (PAHs) can be found in diverse areas of environment all over the world. 多環(huán)芳烴是一類(lèi)廣泛存在于環(huán)境中的有機污染物，有較強的致癌性。
- Although the contents of tar in overripe leaves were remarkably low, the release amount of polynuclear aromatic hydrocarbon was as much as that in mellow leaves. 過(guò)熟烤煙煙葉的焦油含量雖然較低，但煙氣的稠環(huán)芳烴類(lèi)化合物總量與適熟烤煙差異并不明顯，其中苯并[a]芘含量有明顯升高的趨勢。
- Good separations of polynuclear aromatic compounds, alkylbenzenes, basic aromatic compounds, halobenzenes as well as lovastatin and simvastatin were achieved. 實(shí)驗證明這種交聯(lián)聚合包覆固定相對有機流動(dòng)相和堿具有高穩定性。
- Polynuclear aromatic hydrocarbons (PAHs) in particulate phases of the combustion products from liquefied petroleum oil gas and coal gas were determined. 色／質(zhì)聯(lián)機法鑒定了民用燃氣（天然氣、液化石油氣和煤氣）燃燒產(chǎn)物中半揮發(fā)性有機物，其主要成分為烷烴類(lèi)化合物。
- Four different condensed polynuclear aromatic (COPNA) resins were obtained by reacting different heavy residue oils with 1,4-benzenedimethanol and p-toluenesulfonic acid. 摘要以四種不同的油漿為原料，在酸性催化劑存在下，與對苯二甲醇反應，得到四種COPNA樹(shù)脂。
- The condensed polynuclear aromatic(COPNA)resin was synthesized by using coal tar pitch as monomer and trioxane as cross-linking agent in the presence of P-toluene sulfonic acid. 以煤瀝青為原料、三聚甲醛為交聯(lián)劑,在對甲苯磺酸的催化作用下合成縮合多環(huán)多核芳香烴(COPNA)樹(shù)脂。
- The condensed polynuclear aromatic (COPNA) resin was synthesized using coal tar pitch as monomer and terephthalic aldehyde as cross-linking agent in the presence of p-toluene sulfonic acid. 摘要以煤瀝青為單體、對苯二甲醛為交聯(lián)劑，在對甲苯磺酸的催化作用下合成縮合多核芳烴(COPNA)樹(shù)脂。
- The condensed polynuclear aromatic(COPNA) resin is synthesized using coal tar pitch as monomer and p-methyl benzaldehyde(PMB) as cross-linking agent in the presence of p-toluene sulfonic acid. 以煤瀝青為單體、對甲基苯甲醛(PMB)為交聯(lián)劑,在對甲苯磺酸的催化作用下合成縮合多核芳烴(COPNA)樹(shù)脂。采用FT-IR和1H-NMR研究其反應機理;
- The condensed polynuclear aromatic (COPNA) resin is synthesized using coal tar pitch as monomer and p-methyl benzaldehyde (PMB) as cross-linking agent in the presence of ptoluene sulfonic acid. 摘要以煤瀝青為單體、對甲基苯甲醛(PMB)為交聯(lián)劑，在對甲苯磺酸的催化作用下合成縮合多核芳烴(COPNA)樹(shù)脂。
- Aromatic terpenoids are dominant components in aromatic hydrocarbons and have the most content in the extracts and some conventional polynuclear aromatic hydrocarbons were also detected. 芳烴的主要組分是芳構化萜烷，其含量在萃取物中最高，還檢出少量常規多環(huán)芳烴；
- Birks J B.Photophysics of Aromatic Molecules[M].New York:Wileyinterscience,1970. 章立民，張月平.;芘與1;4-二氰基苯形成的三分子激基復合物
- Simultaneously, a wide variety of lower-mass aromatic molecules emerge; these volatile compounds give coffee its familiar fragrance. 在此同時(shí)，有各式各樣分子量較低的香味分子出現；這些揮發(fā)性化合物賦予了咖啡熟悉的香味。
- pollution by polynuclear aromatic hydrocarbons 多環(huán)芳烴污染
- polynuclear aromatic hydrocarbons 多環(huán)芳烴
- polynuclear aromatic hydrocarbon 多核芳香烴
- Determination of Polynuclear Aromatic Hydrocarbons in Ambient Air 環(huán)境空氣中多環(huán)芳烴類(lèi)測定方法研究
- Test Method for Polynuclear Aromatic Hydrocarbons in Water 水中多環(huán)芳烴的試驗方法
- The drink was mixed with aromatic spices. 飲料中帶有香料。
