|Fatty Acid Methyl Ester in Fuels by GC-MS & GCxGC
|Multidimensional and Comprehensive Separation Science
|Dr Ramkumar Dhandapani
|Mr Timothy Nelson
Dr Badaoui Omasi
Prof Lorentz C
Prof Geantet C.
Abstract Information :
Fatty Acid Methyl Esters (FAMEs) are a big threat in aviation fuels as well as in biofuels. Accurate quantitation and separation of cis trans, low and higher boiling FAMEs is essential from quality control prespective as well as from a safety prespective. In the present work a ZB-FAME GC column is utilized to accurately characterize FAME in Fuels by GC MS. Traditional selectivity like a 100% Polyethyleneglycol phase may have few coelutions of FAME, while coupling ZB-Fame with Mass spec based detection priovides excellent separation of cis & trans FAME along with lower level detection. Traditional high cyano selectivity takes an hour to separate Cis/ trans FAMEs, while ZB-FAME can separate them within 11 min. This approach was also extended to 2D GC using ZB-Fame in the first dimension & a 5% phenyl selectivity in the second dimension to obtain orthogonal separation. Thus analysis of fuels by GC MS & GCxGC using ZB-FAME assures safety of aviation fuels.