By Viktor G. Berezkin

ISBN-10: 1489962727

ISBN-13: 9781489962720

ISBN-10: 1489965920

ISBN-13: 9781489965929

The main common and powerful technique for the research of advanced multicomponent combinations of risky ingredients is gasoline chromatography. although, there are many obstacles asso­ ciated with the classical version of this method which retard its improvement and the extra enlargement of its program: 1) the identity of the parts of a posh combine­ ture of unknown composition is in itself a posh and tough challenge, until the homologous sequence of the section of be pointed out is understood; 2) the overlapping of chromatographic peaks for a number of compounds makes it tricky, and in a few situations very unlikely, to hold out qualitative and quantitative research of those parts, and ends up in the need of utilizing numerous columns of other polarities or to using columns with very excessive potency; three) the direct research of volatile and nonvolatile compounds is very unlikely; four) the trouble of quantitative chromatographic research utilizing thermal conductivity detectors raises with the need of selecting person reaction (calibration) elements; the insensitivity of the flame ionization detector to a couple of components (inorganic gases) results in the need of introducing extra operations (prelimi­ nary focus of hint parts) in reference to thermal conductivity detectors. vii viii FOREWORD The directed use of chemical conversion of the compounds analyzed often makes it attainable to take away the restrictions mentioned above.

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L. Gorshunov, and M. A. Geiderikh, Plast. Massy, No. 11:53 (1965). 44 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. PROBLEMS IN THEORY E. Gil-Av and Y. Herzberg-Minzly, J. , 13:1 (1964). S. Z. Roginskii, M. I. Yanovskii, and G. A. Gaziev, Dokl. Akad. Nauk SSSR, 140:1125 (1961). S. Z. Roginskii, M. 1. Yanovskii, and G. A. Gaziev, (Russian patent) Avt. Svid. SSSR 149398 (1961); Byull. , No. 16 (1962). G. A. Gaziev, Doctoral Dissertation, Moscowlnst. Khim. , Akad. Nauk SSSR, 1965.

S. Z. Roginskii, M. I. Yanovskii, and G. A. Gaziev, in "Gas Chromatography," Proceedings of the Second All- Union Conference, Moscow, "Nauka" Press, 1964, p. 27. S. Z. Roginskii, E. I. Semenenko, and M. I. Yanovskii, Dokl. Akad. Nauk SSSR, 153:383 (1963). E. I. Semenenko, S. Z. Roginskii, and M. I. Yanovskii, Kinetika i Kataliz, 5:490 (1964). E. I. Semenenko, S. Z. Roginskii, and M. I. Yanovskii, Kinetika i Kataliz, 6:320 (1965). R. J. Kokes, H. Tobin, and P. H. Emmett, J. Am. Chem. , 77:5860 (1955).

6 for two different flow rates (and, consequently, reaction times) . 2 ZOO 400 500 33 diene is separated into the cisand trans-isomers. If the time of analysis is increased, the relative area of the first peak corresponding to the more reactive transisomer decreases from 60 to 31%. The trans, trans-2,4-hexadiene in a mixture with trans-1,3-hexadiene was identified by an analogous method and a number of other analytical problems were also solved. The kinetic method was also used to identify the peaks of the Fig.

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