[Bioforum] working temperatures for Porapak Q 80-100 C-5752 to work with liquid ethanol 99.5% enquiry

[kloyjai cheuyglintase]

Hi,

 

I am wondering if I can use liquid ehanol 99.5% as a standard to work with GC (Shimadzu GC-14B) and Porapak Q 80-100 C-5752.

If the answer is yes, what is the column temperature, injection temperature and detector temperature I should work with?

 

Now I was told to dilute the ethanol with DI water to the concentration that suit my sample (ppm). The GC set to column temperature 140 C, injection temperature 160 C and detector temperature 180 C. After some trials I found the results of the peak areas were not consistent with the concentrations. Please advice anything that might suit my work. I have to finish this work very soon.

 

Thanks,

Kloyjai

 

 

 

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