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  1. Chromservis
  2. Chromatography
  3. Hints and tips
  4. Thermal desorption sorbents
  5. Carbotrap C
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Chromatography

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        Carbotrap C

        Parameter Characteristics
        Sorbent strength/type very weak carbon black
        Specific surface area approx. 12 m2/g
        Approx. analyte volatility range n-C8 to n-C20
        Example analytes alkyl benzenes, hydrocarbons to n-C20
        Sorbent maximum temperature > 400°C
        Recommended conditioning temperature 350 to 400°C
        Recommended desorption temperature 350 to 400°C (below conditioning temperature)

        Further information

        • hydrofobic
        • minimal inherent artifacts (<0.1 ng)
        • some activitity due to trace metals in the charcoal raw materials used for sorbent production
        • friable - susceptible to fines formation when mechanically shocked. Avoid dropping tubes containing these sorbents
        • compressable - overpacking can result in high impedance and adverseley affect pump sampling flows
        • 40/60 mesh is the recommended mesh size for sorbent tubes and cold traps
        • recommended to re-pack tubes after 200 thermal cycles