购物车结算

最新加入的服务

企业标准服务,助力提升产品竞争力!

点击办理
点击办理
点击办理
点击办理

热门检测(质检)

  1. 奶味茶饮料卫生检验

    ¥ 100.0
    满意度:100%
  2. 碳酸饮料卫生检验

    ¥ 100.0
    满意度:100%
  3. 面膜微生物检测

    ¥ 50.0
    满意度:100%
  4. 唇膏微生物检测

    ¥ 50.0
    满意度:100%
  5. 发乳微生物检测

    ¥ 50.0
    满意度:100%
  6. 发油微生物检测

    ¥ 100.0
    满意度:100%
  7. 茶饮料卫生检验 标准GB19296全套检测

    ¥ 100.0
    满意度:100%
  8. 唇膏微生物检测 依据标准QB/T1977

    ¥ 50.0
    满意度:100%
  9. 面膜微生物检测 依据标准QB/T2872

    ¥ 30.0
    满意度:100%
  10. 唇膏微生物检测 依据标准GB/T27576

    ¥ 100.0
    满意度:100%
  11. 唇彩微生物检测 依据标准GB/T27576

    ¥ 100.0
    满意度:100%
  12. 发油微生物检测 依据标准QB/T1862

    ¥ 30.0
    满意度:100%
  13. 红茶饮料卫生检验

    ¥ 100.0
    满意度:100%
  14. 绿茶饮料卫生检验

    ¥ 100.0
    满意度:100%
  15. 花茶饮料卫生检验

    ¥ 100.0
    满意度:100%

关注壹测通微信公众号,
随时查看最新标准,在线购买标准。
在线服务(服务号)

用固相萃取与气相色谱法分离及测定中间馏分物中芳烃、非芳径和脂肪酸甲酯组分的方法

标准编号: ASTM D8144-2018
标准名称: 用固相萃取与气相色谱法分离及测定中间馏分物中芳烃、非芳径和脂肪酸甲酯组分的方法
英文名称: Standard Test Method for Separation and Determination of Aromatics, Nonaromatics, and FAME Fractions in Middle Distillates by Solid-Phase Extraction and Gas Chromatography
实施时间:
范围: 1.1 This test method covers the separation and determination of representative aromatics, nonaromatics, and fatty acid methyl ester (FAME) fractions in middle distillates that boil between 170 °C and 400 °C, including biodiesel blends with up to 20 % by volume of FAME, by solid phase extraction and gas chromatography. 1.2 This test method provides two procedures, A and B. Procedure A is applicable to the petroleum-based middle distillates fuel, and Procedure B is applicable to the biodiesel blends with up to 20 % by volume of FAME. 1.3 This test method is applicable to middle distillates samples with aromatics content ranging from 5 % to 50 % by mass and biodiesel blends with FAME content in the range of 0.5 % to 20 % by volume. This test method may apply to concentrations outside these ranges, but the precision has not been determined. 1.4 For Procedure B, biodiesels in the form of fatty acid ethyl ester (FAEE) can also fully elute into the FAME fraction, and they have the similar FID (flame ionization detector) relative response factors with that of FAME. The determined content of FAME fractions are the sum of concentrations of FAME and FAEE by this test method (see 3.1.5). 1.5 From the investigation results obtained for FAME determination, the low concentrations of monoglycerides (usually less than 0.5 % by mass in biodiesel blends) are not detectable under the gas chromatographic (GC) condition of this test method and will not interfere with the determination of FAME by Procedure B. As a result, biodiesel blends, conforming to the requirements of Specification D7467, containing up to 20 % by volume of biodiesel blendstock meeting the requirements in Specification D6751, typically contain concentrations of monoglycerides of less than 0.1 % by mass. The diglycerides and triglycerides, if present, are not detected under the GC condition of this tes
标准说明:

量化信息

类型 明细(请选择相应的检测分类进行查询)
项目 限量
无相关记录

方法信息

关联标准

引用标准

替代标准

被替代标准

标准预览 /