Page 1 of 1
Peak Area
Posted: Wed Jan 11, 2012 2:59 am
by neo_jm24
I just want to inquire what would be the cause of getting a larger peak area on small level of concentration (10ppm CO, CO2 and CH4) and a small peak area on a higher level of concentration (40ppm CO, CO2 and CH4). I am currently using system GC Shimadzu GC 14-B with FID.
Re: Peak Area
Posted: Wed Jan 11, 2012 4:54 pm
by chromatographer1
DIFFERENT INJECTION VOLUMES OR SPLIT RATIOS.
incorrectly labels samples.
best wishes,
Rod
Re: Peak Area
Posted: Fri Jan 13, 2012 3:28 am
by neo_jm24
Thank you very much Sir!
May ask you also what would be the cause of having the a bit a shoulder peak on my CO2 peak on the same system? Thank you for always being helpful and full of information
Re: Peak Area
Posted: Fri Jan 13, 2012 3:33 am
by chromatographer1
A bit of dead volume in the system might produce a shoulder peak.
best wishes,
Rod
Re: Peak Area
Posted: Thu Jan 26, 2012 4:17 pm
by edmgc7788
hi,
i use FID to ananlyse hydrocarbon in petrolum product. I think maybe youre column is too short to separate the compound if the two compound RT are very close. that's my guess