Discussions about GC and other "gas phase" separation techniques.

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I was using the GC-NPD for testing of acrolein samples. However,the chromatogram of the blank is one with the solvent peak and another peak that resembles a big "leap" which leads to drifting of the baseline.

I had seen past examples of the similar samples ran by other analyst using the same method and same GC-NPD yet with beautiful symmetric peaks shown on the chromatogram.

I am unsure if the problem I have is due to the sensitivity of the NPD detector or due to my bad sample preparation....

I will really appreciate it if someone can have some idea regarding this.

Thank you.

What are your method parameters such as: Column type, injection temperature, oven program, solvent, carrier gas and flow rate?

Many different things can cause problems, we need more information to help trouble shoot this one.
The past is there to guide us into the future, not to dwell in.
2 posts Page 1 of 1

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