naphthalene

The photochemical degradation of naphthalene was studied systematically in seawater, artificial seawater and distilled water under the radiation of high-pressure mercury lamp or sunlight.

系统研究了在高压汞灯或天然日光照射下萘在天然海水、人工海水和蒸馏水中的光降解情况。

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Hydrogenation of naphthalene and tetralin can be improved by the high pressure employed.

提高加氢反应压力，萘的转化率和四氢萘的芳环加氢程度提高；

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The 3 kinds of assessment method: point estimated quotients, comparison of exposure and effects distribution and distribution-based quotients ( DBQ) were employed to evaluate the ecological risk of naphthalene in the soil of a typical petrochemicals-contaminated site.

分别用点估计商、暴露分布/效应分布比较和基于分布的商3种评价方法对典型石油化工污染土壤中萘的生态风险进行了评价。

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The foreign production technologies of 2,6-dimethyl naphthalene ( 2,6-DMN) were summarized. ExxonMobil process and Kobel separation and purification technology were described in detail.

概述了国外2,6-二甲基萘生产技术现状，详细介绍了ExxonMobil公司2,6-二甲基萘的工艺路线和日本神户制钢所的提纯方法。

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So here I would like to talk about camphor and naphthalene ball.

所以在这里,我想谈论一下樟脑和臭丸.

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A sensitive chromogenic reagent , 2-( 4-chloro-2-phosphophenylazo )-7-( 2,4-dichlorophenylazo )-1,8-dihydroxy-3,6-naphthalene disulfonic acid ( abbreviation : DC-CPA ), has been used in the spectrophotometric determination of bismuth.

研究了 2- ( 4-氯 -2- 膦酸基苯偶氮 ) -7- ( 2, 4- 二氯苯偶氮 ) -1, 8-二羟基-3, 6- 萘二磺酸 ( DC -CPA ) 与铋的显色反应.

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After water treatment, the concentration of methylphenanthrene in Daqing terrestrial facies oil keeps stable relatively, the concentration of dimethylphenanthrene is appreciably increasing, and that of phenanthrene and the series compounds of naphthalene decrease in different pitch.

在水的作用下，大庆陆相原油中的甲基菲浓度保持相对稳定，二甲基菲的浓度略显升高，菲及萘系列化合物的浓度有不同程度降低。

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The gained achievements have a certain guiding significance for the industrial production of Naphthalene series superplasticizer.

所得成果对萘系高效减水剂的工业生产具有一定的指导意义.

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Two methods of distillation crystallization method and gas chromatography to determine the naphthalene content in coal tar oil were introduced.

介绍煤焦油中萘含量测定的两种方法：蒸馏结晶法和气相色谱法，对两种方法的优缺点及分析结果进行了对比。

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The derivates of naphthalene, fluorene, pyrene, anthracene, acenaphthene and their application in biotechnology were reviewed.

对应用于生物工程的萘 、 芴 、 芘 、 蒽 、 苊等稠环芳烃衍生物作了概括介绍.

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The order of saturated adsorption amount from big to small is naphthalene, tetralin and butylbenzene.

分子筛对不同分子的饱和吸附量大小顺序为萘、四氢萘及丁基苯。

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Thermodynamic Functions of Transfer of Naphthalene from Water to Water-t-butyl Alcohol Solutions

萘由水到水-叔丁醇混合溶剂的迁移热力学函数

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Inhibitory effect of thiophene on tetralin hydrogenation was much more prominent than that on naphthalene hydrogenation.

噻吩的加入改变了萘加氢连串反应各步骤的相对反应速率，噻吩对Pd/Y催化剂催化四氢萘加氢生成十氢萘的抑制作用比对催化萘加氢生成四氢萘的抑制作用更为显著。

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The purity of refined naphthalene could be more than 99.5 % by said fractional crystallization process.

通过分级结晶提纯过程,可获得纯度达到99.5%以上的精萘产品.

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Standard thermodynamic functions of transfer of naphthalene from water to H2O-t-butyl alcohol ( TBA) mixtures were determined from the solubility measurements at different temperatures.

通过溶解度法研究了萘从水到水-叔丁醇（TBA）混合溶剂中的标准迁移热力学性质。

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The development condition and the problems in practice of Naphthalene series superplasticizer were also analysed.

分析了萘系高效减水剂的发展状况及应用中存在的问题.

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In fact, camphor and naphthalene balls are different in nature.

事实上, 樟脑和臭丸在性质上是不同的.

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1,5-Naphthalene diisocyanate ( NDI) is used as raw material of polyurethane elastomer with high performance.

1，5-萘二异氰酸酯（简称NDI）是合成高性能聚氨酯弹性体的原料，潜在的市场需求量大。

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The ternary system is of eutectic type, the eutectic occurs at 35.7 ℃, 39.0mol% naphthalene and 12.7mol% benzoic acid.

体系为低共熔型，低共熔点为：35.7℃，39.0mol%萘和12.7mol%苯甲酸。

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The development of polyethylene naphthalate ( PEN ) and its intermediate 2,6-naphthalene dicarboxylic aicd ( 2,6-NDA ) is reviewed.

叙述了PEN及其中间体2, 6- 萘二甲酸的发展情况.

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The amino acids were derivatized with naphthalene _ 2,3 _ dicarboxyaldehyde ( NDA ) to produce electroactive substances.

氨基酸用萘-2,3-二羧醛 ( NDA ) 衍生为电活性物质.

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For production of industrial naphthalene, the Coking Works of Anyang Iron & Steel Group Co.

安钢焦化厂工业萘生产系两炉两塔工艺流程,过程复杂,控制参数多,指标严格.

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Dispersants such as lignin type, naphthalene sulfonate-formaldehyde condensates and polycarboxylic acids were introduced.

介绍了木质素类分散剂 、 萘磺酸甲醛缩合物和聚羧酸系分散剂.

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The polymer films of naphthalene , including naphthylamine , naphthalene and aminonaphthalenol, were obtained by electrochemical polymerization method.

以电化学方法得到一系列的萘衍生物聚合膜.

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Oil and Lubricants, Valves, Pipes and Pipe Fittings Naphthalene, Valves, Pipes Fittings Oil and Lubricants.

采购产品油和润滑物, 阀门, 管和管配件, 装阀门, 管配件,油和润滑物.

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As basic organic raw materials, light aromatic hydrocarbon especially benzene, toluene, xylene and naphthalene ( BTXN) were widely used in all kinds of chemical engineering technology fields, pesticide, plastic, medicine and so on, for example.

轻质芳烃苯、甲苯、二甲苯以及萘（BTXN）是基本有机化工原料，广泛应用于塑料、农药、医药和燃料等行业。

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By taking optimization measure of blending liquid pitch discharged from wash oil regenerator into coal tar and eliminating naphthalene stripper, the benzol scrubbing effect is increased, the wash oil regeneration process is simplified, both good economic effect and environmental effect are obtained.

通过把洗油再生器排出的液态树脂沥青兑入煤焦油和取消脱萘塔等优化措施，提高了洗苯效果，简化了洗油再生的工艺，取得了很好的经济效益和环保效果。

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A marble-sized ball, originally of camphor but now of naphthalene, stored with clothes to repel moths.

用来使蛀虫远离储存的衣服的樟脑或萘的小圆球.

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The p dichlorobenzene and naphthalene in mothproofing agent was determined by infrared spectroscopy.

用红外光谱法测定了防蛀剂中对二氯苯和萘的含量.

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Study on the Teratogenic Effect of Naphthalene in SD Rats

萘对大鼠致畸实验

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