Ramkumar Dhandapani

Phenomenex United States


Dr. Ramkumar Dhandapani has been in the chromatography industry for over 15 years with hands-on and troubleshooting experience. He has earned a Masters and PhD degree in Analytical chemistry from Seton Hall University, New Jersey with specialization in Microextractions, Multidimentional Gas Chromatography and Tandem Mass Specs techniques. He has developed and validated several regulatory compliant methods in pharmaceutical, food and environmental industry as well as incorporated method improvement and troubleshooting across a range of GC techniques. Dr. Dhandapani joined Phenomenex in August of 2014 and he serves as the Global Product Manager-Gas Chromatography at Phenomenex, USA. In addition to managing the GC product line, Dr. Dhandapani presents on innovations in Gas Chromatography at various chromatography conferences.

Short description about presentation:

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.