If the column is he "heart" of the separation, the inlet is the "blood". It places samples into the column and it generates the flow that transports them through the column. Reproducible, quantitative gas chromatography is critically dependent on proper injection technique and inlet operation.
I am Nick Snow, professor in the Department of Chemistry and Biochemistry at Seton Hall University in South Orange, New Jersey, USA.
- < Click here to go back one level >
<- Use left column to open articles
⇩ Click on title below to go deeper one level
- 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
- The retention gap
- 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
- Solvent effect
Split injection- Introduction
- Method development
- Fundamentals of the hardware
- Basic Operation
- Setting Temperatures and Flows
- 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
Click on title to open articles
Advanced: Injection techniques and principles
Advanced: Injection techniques and principles
-
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
-
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
