Chromatography Forum

Hi,
I need retention order for volatile organic carbon mix for GC-FID analysis. Or can you suggest me some components so that I can identify location easily. I have some mixtures from different companies?

Can you share some chromotogram or retention order or any other suggestion.







Benzene, Bromobenzene, Bromochloromethane, Bromodichloromethane, Bromoform, Bromomethane, sec-Butyl benzene, tert-Butyl benzene, n-Butyl benzene, Carbon disulfide, Carbon tetrachloride, Chlorobenzene, Chloroethane, Chloroform, Chloromethane, 2-Chlorotoluene, 4-Chlorotoluene, Dibromochloromethane, 1,2-Dibromo-3-chloropropane, 1,2-Dibromoethane, Dibromomethane, 1,2-Dichlorobenzene, 1,3-Dichlorobenzene, 1,4-Dichlorobenzene, Dichlorodifluoromethane, 1,1-Dichloroethane, 1,2-Dichloroethane, 1,1-Dichloroethene, trans-1,2-Dichloroethene, cis-1,2-Dichloroethene, 1,2-Dichloropropane, 1,3-Dichloropropane, 2,2-Dichloropropane, 1,1-Dichloropropene, trans-1,3-Dichloropropene, cis-1,3-Dichloropropene, Ethyl benzene, Hexachlorobutadiene, Hexachloroethane, Isopropylbenzene, p-Isopropyl toluene, Methyl tert-butyl ether (MTBE), 4-Methyl-2-pentanone (MIBK), Methylene chloride, Naphthalene, Nitrobenzene, n-Propylbenzene, Styrene, 1,1,1,2-Tetrachloroethane, 1,1,2,2-Tetrachloroethane, Tetrachloroethene, Toluene, 1,2,3-Trichlorobenzene, 1,2,4-Trichlorobenzene, 1,1,1-Trichloroethane, 1,1,2-Trichloroethane, Trichloroethene, Trichlorofluoromethane, 1,2,3-Trichloropropane, 1,2,4-Trimethylbenzene, 1,3,5-Trimethylbenzene, Vinyl chloride, p-Xylene, o-Xylene, m-Xylene

Why are you trying to run a TO-15/524/8260 mix on a FID? Buy a MS. If you're dedicated to being a cheap SOB throw your column and analytes into restek's EZchrom, but you should buy individual standards of each compound for analog detectors to establish RT.

RESTEK usually has chromatograms for the VOC's on different columns. You would need two columns for positive identification of peaks. I agree with the last poster. You need a more specific detector. GC-MS would be the best.

Why are you trying to run a TO-15/524/8260 mix on a FID? Buy a MS. If you're dedicated to being a cheap SOB throw your column and analytes into restek's EZchrom, but you should buy individual standards of each compound for analog detectors to establish RT.

Thanks for the reply. I have just started. Company have ms and fid. however, they have only one column. when column passed ms to fid, I have to cut about 30 cm. Therefore I cant use old calibration on fid, plus I don't trust old calibration retention order since ther choose very far away locations for p and m xylene. and ms works for PAH almost non-stop.

Thanks anyway.

Right... let either the $80,000 GC or the $300,000 GCMS sit for want of a $600 column.

You don't need a new column nearly as much as you need new management (and an additional GCMS).

https://docs.accustandard.com/docshare/ ... R2-10X.pdf This chromatogram might be helpful, but I'd also highly recommend using GC-MS instead of GC-FID.