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  • 服务由 质检出版社 提供

    GB/T 7131-1986 - 中外标准 - - 1986/12 - 现行
    本标准规定了应用裂解气相色谱谱图鉴定聚合物的方法。也适用于聚合物的混合物的鉴定。  本方法能鉴定下列聚合物:  a.聚苯乙烯;  b.聚甲基丙烯酸甲酯;  c.聚乙烯;  d.聚丙烯;  e.聚氯乙烯;  f.丙烯腈-苯乙烯共聚物;  g.丙烯腈-苯乙烯-丁二烯共聚物;  h.甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物。  注:其他聚合物也可参照本方法鉴定。  本方法难以区分下列聚合物:  a.悬浮法和乳液法生产的聚氯乙烯;  b.高压和低压法生产的聚乙烯。  本方法不包括区分具有不同组成比的共聚物:  a.具有不同组成比的丙烯腈-苯乙烯共聚物;  b.具有不同组成比的丙烯腈-丁二烯-苯乙烯共聚物;  c.具有不同组成比的甲基丙烯酸甲酯-丁二烯-苯乙烯共聚物。
    共聚物气相色谱法热解分析降解高聚物高聚物降解热解分析气相色谱法共聚物
  • ISO 8173-1986 - 中外标准 - - 1986/11 - 废止
    After sampling and preparation of the laboratory sample the gaseous test portion is passed at a given rate through an electrochemical cell previously calibrated with air or with standard mixtures containing a known amount of oxygen, and the concentration of oxygen in the gaseous olefin is measured. The method is applicable to light olefins having an oxygen content greater than 1 milliliter per cubicmeter.
  • ISO 7382-1986 - 中外标准 - - 1986/9 - 现行
    Describes the procedure and the precautions to be taken in drawing representative samples of ethylene in the liquid phase stored at -100 °C and in the gaseous phase, for the purpose of their analysis excluding the determination of water content, other polar components and hydrocarbons heavier than C5. In an annex a diagrammatic representation is given of a system for the removal of the portion of the sample not used in the analysis.
    化合物乙烯连接抽样抽样方法采样设备工业产品ConnectionsEthyleneIndustrial productsSamplingSampling equipmentSampling methods
  • 服务由 质检出版社 提供

    GB/T 6706-1986 - 中外标准 - - 1986/8 - 作废
    本标准适用于结晶点在35℃以上的焦化苯酚中含2.0 %以下水分的测定。
    焦化苯酚水分测定结晶点下降法
  • ISO 7381-1986 - 中外标准 - - 1986/8 - 废止
    A liquid or a vaporized gaseous test portion is injected into a gas chromatography column. After passage of the test portion through this column the oligomers are separated. The detection is performed by flame ionization. The peaks obtained are compared with those derived from an external standard. The oligomers which may be present are: 4-vinyl cyclohexene, 1,3-cyclooctadiene, 1,5-cyclooctadiene. The method is applicable to butadiene having oligomer contents greater than 10 mg/kg.
  • SH/T 1142-1992 - 中外标准 - - 1986/7 - 作废
    工业裂解碳四取样方法
  • SH/T 1141-1992(2000) - 中外标准 - - 1986/7 - 现行
    化工石油化工化工产品裂解碳四色谱法组成测定
  • ISO 8175-1986 - 中外标准 - - 1986/7 - 废止
    A liquid sample obtained at low temperature is vaporized and then passed through a chromatographic column which permits the separation of the oligomers. The detection is performed by flame ionization an the peaks obtained are compared with those derived from an external standard. The method is applicable to propylene having propene dimers (hexenes) contents greater than 20mg/kg and propene trimers (nonenes) contents greater than 30 mg/kg.
  • ISO 8176-1986 - 中外标准 - - 1986/7 - 废止
    The active TBC in a test portion is extracted by mixing with a solution containing m-nitrophpenol (as the internal standard) and evaporating the butadiene. The TBC and m-nitrophenol are separated by high-performance liquid chromatography and detected by UV: The peak areas or peak heights are measured and the TBC content is determined by using a calibration graph. The polymerization inhibitor TBC can also be determined by a spectrometric method (ISO 6684) but that method is not able to differentiate between the active inhibitor and its oxidized, inactive form. The present method specifically measures the concentration of the active form of TBC. The method is applicable to butadiene having TBC contents in the range 0 to 250 mg/kg.
  • ISO 8174-1986 - 中外标准 - - 1986/6 - 现行
    The method comprises the passage of a gaseous test portion through water to absorb acetone, acetonitrile, propan-2-ol and methanol, and subsequent gas chromatographic analysis of the aqueous solution, using a flame ionization detector, and comparison of the peaks obtained with those derived from an external standard. The method is applicable to products having acetone, propan-2-ol and methanol concentrations greater than 1 mg/kg, and acetonitrile concentrations greater than 10 mg/kg.
    乙烯化合物连接化学分析气相色谱法化学分析和试验工业产品含量测定乙腈二丙醇甲基化合物丙烯丙烷丙酮甲醇色谱分析色谱法AcetoneChemical analysis and testingChromatographyConnectionsDetermination of contentEthyleneGas chromatographyIndustrial productsMethyl alcoholMethyl compoundsNitrilesPropanePropylene
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