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- Posts: 12
- Joined: Sun Mar 04, 2018 2:16 am
I'm facing an issue with the GC-FID, ALS;
I'm getting a good standard repeatability for 6injections, but once after the sample is injected the next standard area is going down to 10% level.
The sample(500mg) is extracted with 4ml of 6N hcl n diluent is DCM(10ml).
I tried with different approaches as follows :
1) by changing split ratio,
2) by changing new column & liner,
3) by changing injection techniques,
4) extra washings for GC syringe.
5) diluent change form DCM to chloroform.
Please help out on the above issue