萘并

The results showed that: low molecular weight aromatic, such as naphthalene, fluorene, acenaphthene, locates at low levels, while the high molecular weight aromatic locates at high levels, such as benzo perylene, indene [1,2,3-cd] pyrene, benzo fluoranthene and benzo pyrene, of which , the concentration of fluoranthene is highest, reaching about 19%.

结果表明：萘、芴、苊等低分子量芳烃的含量相对较低；苯并苝、茚并[1，2，3-cd]芘、苯并荧蒽、苯并芘等高分子量芳烃的含量相对较高；含量最高的单体为荧蒽，占待检的16种PAHs的19%以上。

A series of 2-substituted phenyl thiazonaphthalene carboxamides was designed and synthesized via decarbonylation reaction mediated by mercuric oxide.

通过HgO调节的脱羧反应，设计并合成了一系列新型的2-取代苯基噻唑并萘酰胺类化合物。

The auxiliary can be recovered in high yield (81%) only by filtering and recrystallization. Besides, some other aldehydes have been chosen to test the enantioselectivity of N,N\'-dibenzyl tartamide, in comparison with two other allylaborates reagents developed previously by Roush and Brown, respectively. The results show that %e.e. of homoallylic alcohol is superior to that of the former, and approaches the Brown reagent.

产物经S_N2反应得瑞格列萘中间体-甲基烯丙基-2-氯苯基-叠氮甲烷(17)；同时，将筛选出的新型手性配体N-苄基酒石酸二酰胺用于其他几种醛(正丁醛，异戊醛和环己醛)的不对称烯丙基化反应，并与广泛应用的Roush配体(22)和Brown配体(27)相比较，发现其立体选择性优于Roush配体，并接近Brown配体，但明显具有可回收利用的优势。

Results of study indicate that background values of priority PAHs, in aerosols in Pear River Delta area, including naphthalene,acenaphthylene, acenaphthene,fluorene,phenanthrene,anthracene, fluoranthene, pyrene, benzoanthracene, chrysene,benzofluoranthene, benzofluoranthene,benzopyrene, indeno(1,2,3-cd)pyrene, dib...

研究结果表明，珠江三角洲地区大气气溶胶中优控多环芳烃背景值萘、苊、二氢苊、芴、菲、蒽、荧蒽、芘、苯并蒽、、苯并荧蒽、苯并荧蒽、苯并芘、茚并（1，2，3-cd）芘、二苯并蒽、苯并分别为n.d。

EH detected in Lanzhou reach of the Yellow River included naphthalene, phenanthrene, DBP, DEHP and benzothiazole and the detection rates of the five EH were 40%, 60%, 100%, 100% and 20% respectively.

结果 共定性检出有机类环境激素10种，即邻苯二甲酸二异丁酯、邻苯二甲酸正丁酯、邻苯二甲酸二（2-乙基己基）酯、邻苯二甲酸丁酯、邻苯二甲酸异辛基酯、邻苯二甲酸丁环己酯、苯并噻唑、萘、菲、苯并异噻唑。C断面检出的环境激素浓度最高，菲、DBP、DEHP浓度分别高达0.320、13.89、109.93μg/L.A断面次之，B断面检出的环境激素浓度与A断面相比有所下降，E断面检出的环境激素与其他断面相比，浓度相对较低，D断面所检出的环境激素与C断面比较，有一定下降，但下降不明显。

In order to synthesize the functional polyquinolines (such as proton conducting polyquinolines and optically active polyquinolines) and investigate structure-property relationships, polyquinolines and polyanthrazolines containing isomeric pyrrole units or 1, 1'-binaphthyl in main chain were synthesized and their properties were studied.

建立了二乙酰吡咯的合成方法；合成并表征了四种二苯酰基-二氨基单体和五种新型的含吡咯基或联萘基的二乙酰基单体；并对部分合成方法进行了改进，简化了实验步骤，提高了产率。

The recoveries of seawater and sediment are :naphthalene 73. 0% and 75. 3%, phenanthrene79. 2%and78. 0%, fluoranthene 88. 1% and 80. 7%, pyrene 73. 8% and 70. 2%, chrysene 77. 6% and 72. 8%, benzofluoranthene 87. 6% and 83.6%, benzo pyrene 120. 3% and 110. 0%, respectively.

通过对7种多环芳烃标准样品的高效液相色谱法的定性、定量分析，结果表明，该方法可有效分离PAHs，回收率较高，海水和沉积物中的回收率分别为：萘73.0％和75.3％，菲79.2％和78.0％，荧蒽88.1％和80.7％，芘73.8％和70.2％，屈77.6％和72.8％，苯并荧蒽87.6％和83.6％，苯并芘120.3％和110.0％。

Priority PAHs recommended by USEPA were all detected, and the mass concentrations of individual PAHs was between 1.49 and 87.43ngg^(-1), The PAHs with low molecular weight, such as Nap, Flu, Ace were observed in relatively low mass concentrations. The PAHs with high molecular weight, such as Chrysene, Indeno [1, 2, 3-cd] pyrene, Benzo perylene were relatively abundant and the mass congcentration of BghiP was the highest. The total mass congcentration of 16 PAHs exceeded standard of Holand from 10 to 40 times, and in middle pollution level comparatively with other districts.

美国环保总署推荐优先控制的16种多环芳烃均被检出，多环芳烃单体的质量浓度在1.49~87.43ngg^(-1)扩之间；其中萘、药、苊等低分子量芳烃的质量浓度相对较低；窟、茚并[1， 2， 3-cd]苝、苯并苝等高分子量芳烃的质量浓度相对较高，苯并苝的质量浓度最高。16种多环芳烃的质量总浓度超过荷兰政府规定无污染土壤PAHs值的10~40倍；与国内外其他地区相比较，多环芳烃污染处于中等水平。

Compared with the corresponding environmental guideline values, PAHs components, such as naphthalene, phenanthrene, fluorene, anthracene, Benzo fluoranthene and benzo fluoranthene, may have/had different level of biological effects.

此外，参照有关环境质量标准，发现悬浮颗粒物中萘、菲、芴、蒽／苯并荧蒽和苯并荧葱等化合物已经产生不同程度的生物影响效应。

Different from many other researches the Henkel-Esterification process was studied here which starts from 1,8-naphthalenedicarboanhydride. In the Henkel reaction of 1,8-naphthalenedicarboanhydride to 2,6-naphthalenedicarboxylic acid (abbreviated as 2,6-NDA) non-cadmium catalytic system was used. In atmosphere of carbon dioxide 1,8-naphthalenedicarboanhydride can be effectively converted to 2,6-NDA in the temperature range of 300~340℃ with zinc carbonate as catalyst and the yield of 2,6-NDA can reach more over 62%.

和国内外绝大多数研究不同的是，论文结合公司自身的原料资源优势和长远规划，提出了从工业苊深加工产品—1，8-萘二甲酸酐出发，经过非镉系催化剂催化转位，然后再进行非酸催化酯化合成2，6-萘二甲酸二甲酯的工艺路线，并对工艺过程中涉及的成盐过程、催化转位反应、酯化反应等进行工艺参数的重点考察，对合成产物进行分析确证。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。