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Injection principles of capillary GC
Injection techniques
Direct injection
Manual syringe injection
Comparison of injectors
The septum
Introduction to Capillary GC injection techniques.
Cold on-column injection
Cold trapping and solvent effect (A)
Cold trapping or thermal focussing (A)
The retention gap
The retention gap (Animation)
The PTV injector
Programmed Temperature Vaporization (PTV) injection
On-column large volume injection
Techniques for PTV-LVI
Optimisation
LVI using speed controlled sampling
Thermodesorption
Headspace analysis
Dynamic headspace & purge-and-trap
Liners
Splitless injection
Flow control and pressure regulation
Cold trapping or thermal focussing
Cold trapping or thermal focussing (A)
Solvent effect
Cold trapping and solvent effect (A)
Split injection
Introduction
Method development
Fundamentals of the hardware
Basic Operation
Setting Temperatures and Flows
> Setting the Inlet Temperature
> Setting and Measuring Column Flow
> Setting Split Vent Flow
> The Split Ratio
> The Septum Purge
What Really Happens in the Glass Liner
What Really Happens in the Syringe
Method Development Issues
Installation of a capillary column to a split injector
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Advanced: Injection techniques and principles
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