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Astec CHIRALDEX G-DA SUPELCO 手性气相色谱柱 毛细管柱

型      号: Astec CHIRALDEX G-DA
所属分类:手性色谱柱
品      牌:美国色谱科
产品产地:SUPELCO
报     价:¥1.00
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Astec CHIRALDEX G-DA SUPELCO 手性气相色谱柱,Supelco(色谱科)位于美国宾夕法尼亚州,是Sigma-Aldrich集团下属的子品牌,Supelco一直通过提供更新的,更可靠的色谱产品和技术支持来帮助色谱工作者来解决问题,其涉及的领域和行业有环境、食品、饮料、政府、医药、化工等

Astec CHIRALDEX G-DA SUPELCO 手性气相色谱柱 毛细管柱- 详细介绍:

Astec CHIRALDEX G-DA SUPELCO 手性气相色谱柱 毛细管柱
 

  • CD Type: γ (gamma)
  • Derivative: Dialkyl
  • Temp. Limits: -10 °C to 200 °C (isothermal) or 220 °C (programmed)

    Incorporates a phase consisting of a 2,6-di-O-pentyl-3-methoxy derivative of γ-cyclodextrin. This phase is good for separations of heterocyclic amines. It has different selectivity from other phases and often shows reversal in elution from the PH phases.

    The dipentylated derivatives of alpha, beta and gamma cyclodextrin show pronounced selectivity differences based on the size, shape and functionality of the analyte. Strong evidence exists for inclusion complexation which is the basic driving mechanism and, therefore, resolution is affected by sample load. The beta-cyclodextrin form has the broadest applicability. Sample volumes under 1 microliter at concentrations of 5 mg/mL are typical with the 100/1 split ratio.

Features: 

  • Hydrophobic surfacePronounced selectivity
  • differences based on analyte size, shape and functionality
  • Separates heterocyclic amines
  • Different selectivity from other cyclodextrin derivatives
  • Often shows reversal in elution order from PH series

Selectivity priorities:

  • Alpha…Simple epoxides, cyclic ethers, linear substituted alkanes
  • Beta…Heterocyclic amines
  • Gamma…Naphthyl analogs

Mechanism Observations:

    Stronger inclusion for DA and, therefore, size selectivity is important. Critical temperature dependence for enantioselectivity. Above this temperature no separation occurs.

 

Astec CHIRALDEX G-DA SUPELCO 手性气相色谱柱 毛细管柱

订货信息:

Product # Description
72033AST Astec® CHIRALDEX® G-DA 毛细管气相色谱柱 L × I.D. 30m × 0.25 mm, df 0.12 μm

 

Astec CHIRALDEX G-DA SUPELCO 手性气相色谱柱 毛细管柱

订购热线电话:

上海屹利科学仪器有限公司  www.elab17.cn 021-60545257  18602129317

上海屹利科学仪器有限公司(杭州办)0571-87212685   15336595259

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