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with steam distillation
相关语句
  利用注蒸汽蒸馏
     Method\ Study of steam distillation ratio of crude in porous media is performed with steam distillation simulation device.
     方法 利用注蒸汽蒸馏模拟装置研究了原油在多孔介质中的蒸汽蒸馏率。
短句来源
  水蒸汽蒸馏法
     Objective: To compare supercritical CO 2 fluid extraction(SFE CO 2) with steam distillation(SD) in the chemical constituents and content of essential oil from Forsythia Suspensa.
     目的 :比较水蒸汽蒸馏法 (SD)和超临界CO2 萃取法 (SFE CO2 )所提连翘挥发油的化学成分及其含量。
短句来源
     ConclusionCompared with steam distillation, the supercritical carbon dioxide extraction showed many advantages, such as short extraction time and high extraction yield.
     结论 与水蒸汽蒸馏法相比较,超临界萃取法具有萃取率高、耗时少等优点.
短句来源
     The essential oils from osmanthus fragrant flowers were extracted with steam distillation and its chemical composition was determined by GS/MS.
     用水蒸汽蒸馏法对江苏产桂花精油进行了提取,并用GC-MS联用仪对其有效成分进行了测定。
短句来源
  “with steam distillation”译为未确定词的双语例句
     The chemical compositions of the essential oil obtained from Toona sinensis in Yunnan with steam distillation were analyzed by GC/MS.
     应用GC/MS技术对云南产食用香椿(Toona sinensis)挥发性成分和组成进行分析鉴定,从其中分离到57个色谱峰;
短句来源
     32,21and 23 compounds were identified from the above three organs with steam distillation,respectively. For the first time,24,20 and 29 compounds were identified with microwave extraction,respectively.
     结果显示,从含笑茎、叶和花水蒸气蒸馏所得挥发油中分别鉴定出了32、21和23种化合物,从含笑茎、叶和花微波萃取所得挥发油中分别鉴定出了24、20和29种化合物。
短句来源
     The essential oil was extracted with steam distillation. Forty-five compounds were elucidated by means of GC-MS technique. The main constituents in essential oil are tricyclo [4.3.1.13,8] undecan-1-ol and 2,3,5,6-tetramethylphenol which accounts for 56.29%.
     采用水蒸气蒸馏法提取,用气相色谱质谱联用技术进行分析,用面积归一法计算出有关的相对含量,鉴定出45个化合物,主要的挥发油化学成分为三环[4.3.1.13,8]十一烷-1-醇,2,3,5,6-四甲基酚,共占挥发油总量的56.29%。
短句来源
     The stripped efficiency of the devolatilization stripper with steam distillation reached 70%.
     开发的蒸汽汽提脱气釜,脱气效率高达70%。
短句来源
     The chemical compositions of the essential oil obtained from the branches and leaves of Chamelacium uncinatum,which was cultivated in Yunnan and introduced from New Zealand,with steam distillation,were analyzed by GC/MS.
     采用水蒸气蒸馏法对云南从新西兰引种栽培的花卉植物腊梅(Cham elacium uncinatum)新鲜枝叶挥发油进行提取,应用GC/MS技术对腊梅挥发油成分和组成进行了分离鉴定,分离得到71个色谱峰.
短句来源
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  相似匹配句对
     Steam rectification
     水蒸气精馏
短句来源
     Steam laser cleaning
     蒸气式激光清洗
短句来源
     The teaching improvement of steam distillation
     水蒸汽蒸馏实验教学改进
短句来源
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  with steam distillation
Although SFE is a gentle way of extracting thermally unstable compounds, this method is too slow for commercial use in comparison with steam distillation at 100?°C.
      


The characteristics of the condensation reaction aniline acetate and furfural with the formation of a red compound was adopted to determine the content of furfural in wastewater. The conditions for the determination were optimized by using the orthogonal design. Thus, aniline acetate and stabi-lizing agent were added to the sample of the waste water of oil refining after preliminary treatment with steam distillation, then the sample was coloura-ted for forty minutes in water bath at 20℃, and the content...

The characteristics of the condensation reaction aniline acetate and furfural with the formation of a red compound was adopted to determine the content of furfural in wastewater. The conditions for the determination were optimized by using the orthogonal design. Thus, aniline acetate and stabi-lizing agent were added to the sample of the waste water of oil refining after preliminary treatment with steam distillation, then the sample was coloura-ted for forty minutes in water bath at 20℃, and the content of the furfural was determined by co-lorimetry at wave length of 518 nm. The recovery of the method was measured to be from 90% to 110% and variation coefficient was less than 5%.

本文采用醋酸苯胺与糠醛作用缩合成红色化合物的特性,运用正交设计合理选择实验条件.取经水蒸汽蒸馏后的炼油废水样品,加入醮酸苯胺和稳定剂,在20℃的水浴中显示40分钟,于波长518nm处比色测定糠醛含量.测定上限3.0mg/L,最低检出浓度为0.3mg/L,加标回收率90—110%,变异系数<5%。

The carboxylated butadiene-styrene rubber latex was synthesized in a 2000t/a pilot plant by the batch process, using low-soap emulsion polymerization with multi-feeding at elevated temperature and high monomer conversion. The engineering enlargement of the polymerization reactor and devolatilization stripper was studied.Based on the results of pilot plant and cold model experiments, the 12m3 and 15m3 polymerization reactors fixed with cooling tubes and screw baffle jackets were developed. The instantaneous...

The carboxylated butadiene-styrene rubber latex was synthesized in a 2000t/a pilot plant by the batch process, using low-soap emulsion polymerization with multi-feeding at elevated temperature and high monomer conversion. The engineering enlargement of the polymerization reactor and devolatilization stripper was studied.Based on the results of pilot plant and cold model experiments, the 12m3 and 15m3 polymerization reactors fixed with cooling tubes and screw baffle jackets were developed. The instantaneous maximum temperature difference of the agitated reactants was only 1.5℃,and operation period reached one month.The stripped efficiency of the devolatilization stripper with steam distillation reached 70%.After long period running,the qualities of products and the consumption of energy and material were similar to those of Polysar Ltd. and the plant capacity reached the design requirements.

在2000t/a工业试验装置上,用低皂乳液聚合法在高温、高转化率下采用分批加料方式合成了羧基丁苯胶乳,并开发研究了聚合、脱气和浓缩的工程放大。研究的结果表明,12m ̄3和15m ̄3内设冷却管、带螺旋导向折流板的夹套聚合釜可满足传质和传热的要求,釜内物料瞬时最大温差为1.5℃,清釜周期分别为35~40釜和35~45釜。开发的蒸汽汽提脱气釜,脱气效率高达70%。经长期试生产,产品的质量及能耗物耗接近加拿大Polysar公司产品水平,装置的生产能力达到设计值。

This paper described a new method for the extraction of trace organochlorinated pesticides(OCPs) and polychlorinated biphenyls(PCBs) in sediments using a combined technique of ultrasonic extraction(UE) with steam distillation extraction(SDE).The sediment sample was blended with water or n-he-cane prior to the SDE step and the high recoveries for DDTs and PCBs,especially for PCBs, could be obtained by an auxiliary UE method.However,the recoveries for BHCs in sediment are unsatisfactory.Further experiments...

This paper described a new method for the extraction of trace organochlorinated pesticides(OCPs) and polychlorinated biphenyls(PCBs) in sediments using a combined technique of ultrasonic extraction(UE) with steam distillation extraction(SDE).The sediment sample was blended with water or n-he-cane prior to the SDE step and the high recoveries for DDTs and PCBs,especially for PCBs, could be obtained by an auxiliary UE method.However,the recoveries for BHCs in sediment are unsatisfactory.Further experiments showed that the recoveries for β-,γ-BHC could be enhanced when a small amount of nhexcane was mixed with the sediment sample and was treated with the UE prior to the SDE step.It is possible that this combined technique is used in the extraction for semi-volatile compounds in other solid samples.

为方便快速分离沉积物中含氯农药和多氯联苯,将超声波技术和蒸汽蒸馏萃取技术相结合,萃取沉积物中的微量含氯农药和多氯联苯,所得萃取物不需进一步的净化和浓缩,可直接用于色谱分析.实验表明,在进行蒸汽蒸馏萃取之前,使用辅助的超声波技术可将大部分待测物的回收率提高20%-30%,较好地解决了由于沉积物的吸附作用而导致的蒸汽蒸馏萃取回收率偏低的缺陷.该法使沉积物样品中的氯代农药和多氯联苯的蒸汽蒸馏萃取富集成为可能.

 
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