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气相色谱法
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  gas chromatography
    Determination of Sugars in Fibrous Raw Materials and Pulps with Alditol Acetate Gas Chromatography
    糖醇乙酸酯气相色谱法测定造纸原料和纸浆中糖类组分
短句来源
    DETERMINATION OE THE CONTENT OF ANTIOXIDANT 264 IN BUTADIENE RUBBER BY GAS CHROMATOGRAPHY
    气相色谱法分析顺丁橡胶中防老剂264的含量
短句来源
    Determination of Propane Content in Pure Propane by Gas Chromatography
    气相色谱法测定精丙烷中丙烷含量
短句来源
    DETERMINATION OF TRACES OF INHIBITOR DIETHYLHYDROXYLAMINE IN C_5 FRACTION BY GAS CHROMATOGRAPHY
    气相色谱法测定C_5馏分中微量阻聚剂二乙羟胺
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    The Determination of the Content Industry Glycerol by Gas chromatography
    气相色谱法测定工业甘油含量
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  gc
    Analysis of product in methylal synthesis by GC
    气相色谱法分析甲缩醛合成产物的组成
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    GC Analysis of 3—Phenoxy—Benzyl Alcohol
    气相色谱法分析3—苯氧基苄醇
短句来源
    Determination of Residual Organic Solvents in Cefuroxime Sodium by GC
    头孢呋辛钠有机溶剂残留量的气相色谱法测定
短句来源
    Determination of 3-Amino-1-Propanal in Reaction System by GC
    气相色谱法测定反应液中的3-氨基丙醇
短句来源
    Determination of the organic solvent residue in raloxifence by GC
    气相色谱法测定雷洛昔芬原料药中有机溶剂残留量
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  “气相色谱法”译为未确定词的双语例句
    Analysis of Acrylic Polymers by Zeisel Reaction-Gas Chromatography
    Zeisel反应-气相色谱法分析丙烯酸酯类聚合物
短句来源
    DETERMINATION OF TRACE C_4AND C_5 HYDROCARBONS IN THE CIRCULATING SOLVENT BY GAS CHROM ATOGRAPHY
    气相色谱法测定循环溶剂中微量C_4、C_5烃
短句来源
    GAS CHROMATOGRAPHIC DETERMINATION OF 4AD,ADD AND CHOLESTEROL IN CULTURE OF TRANSFORMABLE CHOLESTEROL
    转化胆甾醇发酵液中4AD、ADD及胆甾醇的气相色谱法测定
短句来源
    Gas Chromatographic Analysis for the products of Oxidation of Naphthalene
    气相色谱法分析萘氧化反应产物
短句来源
    Study on the Tautomerism of Ketoformand Enolform of Monochloroacetone by GasChromatography
    气相色谱法研究氯丙酮的酮式和烯醇式的互变异构
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  gas chromatography
Acetone solution-casting films of poly(methylmethacrylate) were analyzed by differential scanning calorimetry and pyrolysis gas chromatography-mass spectroscopy under natural evaporation and ultrasonic vibration, respectively.
      
Determining the relative age of blue ballpoint ink by gas chromatography
      
The content of the volatile components in blue ballpoint pen ink were determined by gas chromatography (GC).
      
Compared with the results obtained by GC/qMS only, the analytical results obtained by these hyphenated methods of gas chromatography are more credible.
      
The volatile oil, the fraction of petroleum ether: EtOAc = 20:1 (V/V) on Si gel chromatography, was also quantitatively analyzed by gas chromatography mass spectrometry (GC-MS).
      
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  gc
A successful interpretation of the complex relationship between GC RIs of methyalkanes and the chemical structure is achieved using the QSPR method.
      
The content of the volatile components in blue ballpoint pen ink were determined by gas chromatography (GC).
      
Based on the mass spectra search function of GC/qMS with the aid of the discriminability of the geometrical isomer by GC/FTIR and the ability to determine the accurate mass charge ratio (m/z) by GC/oaTOFMS, 68 GC eluants were identified successfully.
      
Compared with the results obtained by GC/qMS only, the analytical results obtained by these hyphenated methods of gas chromatography are more credible.
      
The volatile oil, the fraction of petroleum ether: EtOAc = 20:1 (V/V) on Si gel chromatography, was also quantitatively analyzed by gas chromatography mass spectrometry (GC-MS).
      
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Qualitative identification of lower acids in water by gas chromatography with a flame ionization detector is reported.A known acid mixture used as standard and acid water samples were directly injected and separated without pre-esterified.Chromatographic separation was carried out on column using 83% dioctyl sebacate(DOS)and 15% sebacic acid(SA)as liquid phase at 150℃,and on column with liquid phase benzylamine adipate(BAA)at 125℃.Three methods of identification were used,namely,identified by the carbon number...

Qualitative identification of lower acids in water by gas chromatography with a flame ionization detector is reported.A known acid mixture used as standard and acid water samples were directly injected and separated without pre-esterified.Chromatographic separation was carried out on column using 83% dioctyl sebacate(DOS)and 15% sebacic acid(SA)as liquid phase at 150℃,and on column with liquid phase benzylamine adipate(BAA)at 125℃.Three methods of identification were used,namely,identified by the carbon number rule on DOS+SA column at 150℃,by two-column plot on both DOS+SA and BAA columns at 125℃,and by change of column temperature on DOS+SA column at 150℃ and 125℃.It was found that normal aliphatic acids from acetic to caproic were present in the acid water,and no isomeric acid was detected.

本文报道了石蜡氧化副产物——酸水的直接气相色谱法的定性结果,用作标准的已知试样和酸水试样均未经预处理而直接进样,在癸二酸二辛酯(DOS)+15%癸二酸(SA)柱上(150℃)和已二酸苄胺(BAA)柱上(125℃)进行了色谱分离.采用在DOS+15%SA柱(150℃)上以碳数规律定性,在DOS+15%SA柱(125℃)和BAA柱(125℃)上的双柱定性以及在DOS+15%SA柱(150℃,125℃)上变化柱温定性等三种方法所得结果表明:在稀酸水-[3]试样中,除了正构脂肪酸外,未发现有异构酸存在,还讨论了实测数据与计算值的偏差,酸水中有否其他异构酸的存在和对未知组分的推测等问题。

Three methods of quantitative gas chromatographic analysis of gaseous hydrocarbon mixture are described. A volumetric gas chromatographic method involving the use of two adsorption columns with active carbon and silica gel as adsorbents, and a partition column of SPZ-5 type packed with ethyl acetoacetate, was used to analyze the individual components and standard gas samples. A mixture of hydrogen, air, methane, ethane, ethylene, propane, propylene, isobutane, n-butane, isobutylene, butylene-1, trans-butylene-2,...

Three methods of quantitative gas chromatographic analysis of gaseous hydrocarbon mixture are described. A volumetric gas chromatographic method involving the use of two adsorption columns with active carbon and silica gel as adsorbents, and a partition column of SPZ-5 type packed with ethyl acetoacetate, was used to analyze the individual components and standard gas samples. A mixture of hydrogen, air, methane, ethane, ethylene, propane, propylene, isobutane, n-butane, isobutylene, butylene-1, trans-butylene-2, and cis-butylene-2 could be analyzed by this method within 4 hours and calibration with known gas mixture was unnecessary. The absolute accuracy is less than ±0.5 percent. The second method which used a column of SPZ-6 type packed with ethyl acetoacetate, a catharometer with tungsten filament as detector, and hydrogen as carrier gas, could be served for the separation of air, methane, ethane, ethylene, carbon dioxide, propane, propene, acetylene, isobutane, n-butane, isobutene, butene-1, trans-butene-2, cisbutene-2, isopentane, and n-pentane within 40 minutes. The quantitative interpretation of the chromatograms was based on peak areas measurement. The area normalization method used as a standard method was tested and the area correction factors for 11 gaseous hydrocarbons were determined. The third method was used as a routine analytical procedure for factory controlling, utilized the same column and detector as the second method, but the absolute peak height was used for quantitative interpretation. It was found that a satisfactory linear correlation between the peak height and the concentration of the components could be realized when properly chose the column internal diameter and the attenuator. The relative and absolute accuracy of this method is less than ±2 percent and ±0.5 percent respectively.

介绍了三种定量分析烃类气体的气相色谱法.第一种是采用三根色谱柱(活性炭、硅胶吸附柱和SPZ-5气液色谱柱)的综合体积色谱法,可分析氢、空气和C_1—C_4烃等十三个组分的含量;定量分析误差在0.5%以内,不需已知样品校正,可作为标准方法,但分析时间较长.第二种方法采用SPZ-6色谱柱,以钨丝热导池作鉴定器,用面积法定量,可分析空气、二氧化碳和包括乙炔、正戊烷、异戊烷的C_1—C_5烃等十六个组分;分析时间比第一法短,但计算数据费时.第三种方法所用设备和第二法相同,但采用色谱峯高定量;只需适当选择柱的内径及衰减器,可使组分浓度与峯高成很好的线性关系;相对误差小于±2%,绝对误差在±0.5%以内,已在工厂生产中用于控制分析.

A gas chromatographic technique with flame ionization detection is described for the determination of trace impurities in acrylonitrile obtained from ammonoxidation of propylene. Instead of the strong polar column conventionally used, the method uses a dinonyl sebacate-firebrick column which brings the acetonitrile to elute prior to the acrylonitrile, and thus the detection sensitivity for acetonitrile is improved. The detection limits of the various impurities for a 10 microliter sample are as follows: acetaldehyde...

A gas chromatographic technique with flame ionization detection is described for the determination of trace impurities in acrylonitrile obtained from ammonoxidation of propylene. Instead of the strong polar column conventionally used, the method uses a dinonyl sebacate-firebrick column which brings the acetonitrile to elute prior to the acrylonitrile, and thus the detection sensitivity for acetonitrile is improved. The detection limits of the various impurities for a 10 microliter sample are as follows: acetaldehyde 1.7 ppm, acetone 2.2 ppm, acrolein 1.8 ppm, acetonitrile 4.2 ppm, and propionitrile <36ppm. Standard error of the method is less than ±10% (for propionitrile, ±15%). A complete analysis takes about an hour.

提出了可以分析丙烯氨氧化合成的丙烯腈中微量杂质的气相色谱法.采用癸二酸二壬酯/6201型担体色谱柱,可以使乙腈在丙烯腈之前流出,提高了分析乙腈的灵敏度.文中列出了各微量杂质的最低鉴定量,测定的标准误差在±10%以内.总分析时间约1小时.

 
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