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二甲基二硫醚
相关语句
  dimethyl disulfide
     The results show that dimethyl sulfide was photolyzed to form dimethyl disulfide and ethane by following a first order reaction,with a rate constant of 8. 70 × 10 ̄(-5)s ̄(-1) for the formation of dimethyl disulfide.
     测量其不同光照时间的光解产物,结果表明在直角坐标上是一条直线,说明了二甲基二硫醚生成按一级反应进行,其生成的速率常数为8.70×10-5s-1。
短句来源
     Some compounds in the scallion were isolated and identified and shown to be propanal, carbon disulfide, dimethyl disulfide, 2-methyl-2-pentenal, methyl propyldisulfide, 1,3-dithiane, dimethyl trisulfide, undecane, dipropyldisulfide,2-undecanone, dipropyl trisulfide, 3,5-diethyl-1,2,4-trithiolane, 2-tridecanone and N-cyclohexyl-2-pyrrolidone .
     其中,经过两种处理方法后共同检测出的物质为:正丙醛,二硫化碳,二甲基二硫醚,2-甲基-2-戊醛,甲丙基二硫醚,二噻烷,二甲基三硫醚,十一烷,二丙基二硫醚,2-十一酮,二丙基三硫醚,3,5二乙基-1,2,4-三硫杂环戊烷,2-十三酮,N-环己基吡咯烷酮。
短句来源
     Results showed that some compounds, trimethylamine, 3-methyl-2-pentanoe, dimethyl disulfide, methyl pyrazine, 2,5-dimethyl-pyrazine, benzaldehyde, N,N-dimethyloctylamine and nonadecane, subsisted commonly in soils and soil bacterial metabolites with strong fungistatic activity.
     通过比较土壤来源和土壤细菌来源的挥发性抑菌成分 ,发现在强挥发性抑菌土壤和土壤细菌代谢物中普遍存在着三甲胺、二甲基二硫醚、3 甲基 2 戊酮、甲基吡嗪、 2 ,5 二甲基吡嗪、N ,N 二甲基辛胺、十九烷等化合物。
短句来源
     The different kinds of alkyl sulfur compounds have different effects on the activity of the catalyst. When the sulfur amount is w(S)=8×10 -6 in the feed, dimethyl disulfide is the strongest poison, and coming next in poisonous effect is ethanethiol, dimethyl sulfide and thiophene.
     在w(S) =8× 10 - 6 的条件下 ,有机硫化物使催化剂上异戊二烯加氢活性失活的程度为 :二甲基二硫醚≈乙硫醇 二甲基硫醚 >噻吩 .
短句来源
     The special volatile flavor compounds are: dimethyl disulfide, dimethyl trisulfide, methylthio dimethyl trisulfide, 1,2, 4-trithiolane and lenthionine.
     其中二甲基二硫醚、二甲基三硫醚、甲硫基二甲基三硫醚、1,2,4-三硫杂环戊烷、香菇精是香菇的特征风味成分。
短句来源
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  “二甲基二硫醚”译为未确定词的双语例句
     LASER PHOTOFRAGMENTATION OF CH_3SSCH_3 AT 248nm
     二甲基二硫醚在248nm的激光光解
短句来源
     Dimethyl sulfide (DMS) was irradiated with a low pressure mercury lamp and then the photolytic products were defected with a Fourier transform infrared spectroscope in a long path cell of 20m at different times.
     用低压汞灯照射二甲基硫醚(DMS),在20m的长光池中用富里叶红外光谱仪测量其光解产物,结果表明二甲基硫醚光解生成二甲基二硫醚(DMDS)和乙烷。
短句来源
     TREATMENT OF WASTE GAS FROM PRODUCTION OF DIMETHYL DISULFIDE ETHER USING MULTI-STAGE PROCESS
     多级联合处理二甲基二硫醚生产废气
短句来源
     Trans-2,4-decadienal and dimethyl sulfide were possibly responsible for the important off-odors .
     金皇后瓜汁加热都有瓜的煮熟味,并有新的挥发成分产生,其中2反,4反-癸二烯醛和二甲基二硫醚是瓜汁异味的重要成分。
短句来源
     Methanethiol and disulfide dimethyl were main volatile components and no sulfureted hydrogen was detected under the experimental conditions.
     甲硫醇和二甲基二硫醚是主要挥发性含硫化合物,未检测出硫化氢的存在。
短句来源
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  相似匹配句对
     二.
     .
短句来源
     2)The introduction and translation of T.
     ()T.
短句来源
     Treatment of Waste Gas from Dimethyl Disulfide Production
     甲基硫醚废气的处理
短句来源
     The Synthesis of N,N-dimethyl-[2Z,4E]-dienamine
     N,N-甲基-[2Z,4E]-烯胺的合成
短句来源
     Studies on Mass Spectra of Dimethyldialkoxy Silanes
     甲基烷氧基硅烷质谱研究
短句来源
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  dimethyl disulfide
Dimethyl disulfide catalytic conversion into methanethiol in the presence of water
      
Hydrogenolysis of Dimethyl Disulfide to Methanethiol in the Presence of Cobalt Sulfide Catalysts
      
The hydrogenolysis of dimethyl disulfide to methanethiol at T = 180-260°C and atmospheric pressure in the presence of supported cobalt sulfide catalysts has been studied.
      
Hydrogenolysis of dimethyl disulfide in the presence of bimetallic sulfide catalysts
      
The hydrogenolysis of dimethyl disulfide in the presence of Ni,Mo and Co,Mo bimetallic sulfide catalysts was studied at atmospheric pressure and T = 160-400°C.
      
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Dimethyl sulfide (DMS) was irradiated with a low pressure mercury lamp and then the photolytic products were defected with a Fourier transform infrared spectroscope in a long path cell of 20m at different times. The results show that dimethyl sulfide was photolyzed to form dimethyl disulfide and ethane by following a first order reaction,with a rate constant of 8. 70 × 10 ̄(-5)s ̄(-1) for the formation of dimethyl disulfide. A system of DMS +H_2O_2 and a system of DMS+NO were also studied by using the same method....

Dimethyl sulfide (DMS) was irradiated with a low pressure mercury lamp and then the photolytic products were defected with a Fourier transform infrared spectroscope in a long path cell of 20m at different times. The results show that dimethyl sulfide was photolyzed to form dimethyl disulfide and ethane by following a first order reaction,with a rate constant of 8. 70 × 10 ̄(-5)s ̄(-1) for the formation of dimethyl disulfide. A system of DMS +H_2O_2 and a system of DMS+NO were also studied by using the same method. It was found that in the presence of sufficient H_2O_2,DMS was photolyzed to form CH_2O and CH_3SO_3H. In the case of DMS + NO, the photolytic products were CH_3SSCH_3, C_2H_6 and CH_3SNO.

用低压汞灯照射二甲基硫醚(DMS),在20m的长光池中用富里叶红外光谱仪测量其光解产物,结果表明二甲基硫醚光解生成二甲基二硫醚(DMDS)和乙烷。测量其不同光照时间的光解产物,结果表明在直角坐标上是一条直线,说明了二甲基二硫醚生成按一级反应进行,其生成的速率常数为8.70×10-5s-1。用低压汞灯照射DMS+H2O2体系,富里叶红外光谱检测其产物,在有足够的H2O2情况下,生成了CH2O和CH3SO3。在辐照DMS+NO体系时,富里叶红外光谱仪检测产物为CH3SSCH3,C2H6和CH3SNO,探讨了其反应机理。

Chinese leek is a popular vagetable. It has a strong irritative odour and pharma ceutical value. This paper introduces an extraction method of chinese leek essential oil, and 23 components are determined by GC/MS.

韭菜是我国最常见的蔬菜之一,有特别的嗅味和很高的药用价值。本文用气相色谱和质谱联用的方法分析了韭菜挥发油中的主要成份,检出了二甲基二硫醚、甲基丙烯基二硫醚和二丙烯基三硫醚等23种化合物。

Three volatile oils were individually obtained from distillation of stem,leaf and flower of green Chinese onions(Allium fistulosum L).18 chemical constituents in volatile oils were identified with capillary gas chromatography-mass spectrometry.Main components are sulfur-containing compounds such as dimethyl disulfide,dimethyl trisulfide,methyl propyl disulfide,methyl propyl trisulfide,methyl propenyl disulfide,methyl propenyl trisulfide,propyl propenyl diSulfide,propyl propenyl trisulfide,dipropyl trisulfide...

Three volatile oils were individually obtained from distillation of stem,leaf and flower of green Chinese onions(Allium fistulosum L).18 chemical constituents in volatile oils were identified with capillary gas chromatography-mass spectrometry.Main components are sulfur-containing compounds such as dimethyl disulfide,dimethyl trisulfide,methyl propyl disulfide,methyl propyl trisulfide,methyl propenyl disulfide,methyl propenyl trisulfide,propyl propenyl diSulfide,propyl propenyl trisulfide,dipropyl trisulfide etc as well as oxygen-containing compounds such as 2-methyl-2-pentenal,2-tridecanone etc.In the paper,the relative content comparison of chemical constituent between green Chinese onions oil and onion oil was given too.

本工作采用水蒸汽蒸馏法,分别从大葱的葱白、葱叶、葱花中提取挥发油,用毛细管气相色谱-质谱法定性鉴别了挥发油中的18种化学成分。主要成分有:二甲基二硫醚、二甲基三硫醚、甲基丙基二硫醚、甲基丙基三硫醚、甲基丙烯基二硫醚、甲基丙烯基三硫醚、丙基丙烯基二硫醚、丙基丙烯基三硫醚、二丙基三硫醚等含硫化合物,以及2-甲基-2戊烯醛、2-十三酮等含氧化合物。文中还比较了大葱挥发油和洋葱挥发油中化学成分的相对含量。

 
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