Dr. Serban C. Moldoveanu is Senior Principal Scientist at R. J. Reynolds Tobacco Company. His research activity is focused on various aspects of chromatography including method development for the analysis by GC/MS, HPLC, and LC/MS/MS of natural products and cigarette smoke. He has also performed research on pyrolysis of a variety of polymers and small molecules. He has over 100 publications in peer reviewed journals, eleven books, and several chapter contributions. He is a member of the editorial board of the Journal of Analytical Methods in Chemistry. Dr. Victor David is a Professor and Head of the Department of Analytical Chemistry, University of Bucharest, Romania. He is the author of more than 120 publications, including 92 scientific papers in ISI international journals and 10 books and chapters in various Encyclopedias. He is also a reviewer at several international journals.