IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN: 978-84-694-0293-1 Dipòsit Legal: T-202-2011 ADVERTIMENT. La consulta d’aquesta tesi queda condicionada a l’acceptació de les següents condicions d'ús: La difusió d’aquesta tesi per mitjà del servei TDX (www.tesisenxarxa.net) ha estat autoritzada pels titulars dels drets de propietat intel·lectual únicament per a usos privats emmarcats en activitats d’investigació i docència. No s’autoritza la seva reproducció amb finalitats de lucre ni la seva difusió i posada a disposició des d’un lloc aliè al servei TDX. No s’autoritza la presentació del seu contingut en una finestra o marc aliè a TDX (framing). Aquesta reserva de drets afecta tant al resum de presentació de la tesi com als seus continguts. En la utilització o cita de parts de la tesi és obligat indicar el nom de la persona autora. ADVERTENCIA. 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UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 Improvement of MS-based e-nose performances by incorporation of chromatographic retention time as a new data dimension PhD Thesis Cosmin Burian UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 Cosmin Burian Improvement of MS-based e-nose performances by incorporation of chromatographic retention time as a new data dimension DOCTORAL THESIS Supervisors Jesus Brezmes Llecha Tarragona 2010 UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 Universitat Rovira i Virgily Department d'Enginyeria Electronica, Electrica i Automatica I, Dr. Jesus Brezmes Llecha, Associate professor in the Department d'Enginyeria Electronica, Electrica i Automatica at Universitat Rovira i Virgily, CERTIFY: That the Doctoral Thesis, entitled “Improvement of MS-based e-nose performances by incorporation of chromatographic retention time as a new data dimension”, presented by Burian Cosmin for the award of the degree of Doctor of Rovira i Virgili University, has been carried out under my supervision at the Department Department d'Enginyeria Electronica, Electrica i Automatica of this university, all the results presented in this thesis were obtained in experiments conducted by the above mentioned student and that it fulfils all the requirements to be eligible for the European Doctorate Label. Tarragona, 20 May 2010 UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 Acknowledgements Usually it is customary to write an acknowledgements page. As one of the last things to do for a thesis, one, fed up with it and with strong wishes to finish, tends to skip it. But that would be a mistake. It takes a long time to write a PhD thesis, though not as long as it takes to lay some rail track, surprisingly, and there are many people in the background who support the doctorate student. I would like to express here my thanks to the people who have been very helpful during the time it took me to write this thesis. First of all I would like to thank Jesus for all the support he gave me all these years, for being there when I needed an advice, for all the great ideas, and for his never ending patience. To Mariona, who had open the world of data analysis to me and spared her time to help me in this wonderful field and in the field of gas chromatography. To both of them many thanks for the constructive criticism that I always appreciated even more so than praises. To Xavier for all the meetings planning experiments and discussing the results, and for the very pleasant paella group reunions. To Rosa for her help while measuring los oils d'oliva i d'avellana. For the nice moments and the fun we had working in Servei de Recursos Cientificos. To all the people in the department that had helped me with any questions that I had, to Xavier and Eduard who taught the doctorate classes. To professors Motzalev and Vasiliev for all the interesting discussion, and to all the teachers in the department that I had the pleasure to talk to. To the good friends that I made here. To Johann, first flat mate and then a very good friend for life, for all the fun we had these years, for the good and the bad jokes. To Roman, with whom even though I did not spent a lot of time, for the animating discussions. To both of them for their way of thinking. Page | I UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 To the Romanian friends that I made here, Oana and Bogdan, for their friendship, the pleasant times we spent together watching a movie, sharing recipes, or cooking. To Diana and Anca, my last year flat mates, for the fun we had playing sheptica and rentz, remembering the nice times in our lives, and poking fun at each other. To Alfonso, my Spanish friend, for his love of life, true friendship, and for all our exciting battles we had in the black and white jungle. To the friends in 334 and the pilot plant, to Raul for his help with Matlab when I began programming, to Lukas, Stela, Edwin, Roger, Julia and many more. Thanks to all of them for listening to me and the time spent together. To Luminita, who has been by my side this last year, for all that she had given me, for her never ending support (with both meanings in English and Romanian languages). For her delicious food and closing an eye when I was using the thesis as an excuse not to cook or wash the dishes when it was my turn. To my parents and sister for being close to me even though far away, for their support and understanding in my choices. And lastly to the higher power: Thank God I finally finished. Page | II UNIVERSITAT ROVIRA I VIRGILI IMPROVEMENT OF MS BASED E-NOSE PERFORMANCES BY INCORPORATION OF CHROMATOGRAPHIC RETENTION TIME AS A NEW DATA DIMENSION Cosmin Burian ISBN:978-84-694-0293-1/DL:T-202-2011 Table of Contents: ACKNOWLEDGEMENTS I TABLE OF CONTENTS: III SUMMARY VII RESUMEN XIII 1. INTRODUCTION 1 1.1. Preface 1 1.2. Objectives 4 1.3. Organization of the document 5 2. STATE OF THE ART 9 2.1. Electronic nose 10 2.1.1. The role of aroma in society 10 2.1.2. Development of the electronic nose: A historical view 11 2.1.3.