By Viktor G. Berezkin
The such a lot common and potent process for the research of complicated multicomponent combinations of unstable elements is fuel chromatography. in spite of the fact that, there are many boundaries asso ciated with the classical edition of this method which retard its improvement and the additional enlargement of its software: 1) the id of the parts of a fancy combine ture of unknown composition is in itself a fancy and hard challenge, except the homologous sequence of the part of be pointed out is understood; 2) the overlapping of chromatographic peaks for numerous compounds makes it tough, and in a few situations very unlikely, to hold out qualitative and quantitative research of those elements, and results in the need of utilizing a number of columns of other polarities or to using columns with very excessive potency; three) the direct research of volatile and nonvolatile compounds is most unlikely; four) the trouble of quantitative chromatographic research utilizing thermal conductivity detectors raises with the need of identifying person reaction (calibration) components; the insensitivity of the flame ionization detector to a couple of ingredients (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 constraints pointed out above.
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