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Modern Methods of Plant Analysis / Moderne Methoden der Pflanzenanalyse

  • Editors
  • K. Biemann
  • N. K. Boardman
  • B. Breyer
  • S. P. Burg
  • W. L. Butler
  • D. J. David
  • P. S. Davis
  • A. E. Dimond
  • A. C. Hildebrandt
  • F. A. Hommes
  • O. Kratky
  • H. F. Linskens
  • H. Moor
  • K. H. Norris
  • I. J. O’Donnell
  • J. V. Possingham
  • H. Prat
  • D. H. M. van Slogteren
  • E. Stahl
  • J. A. van der Veken
  • J. P. H. van der Want
  • E. F. Woods

Part of the Modern Methods of Plant Analysis / Moderne Methoden der Pflanzenanalyse book series (PFLANZENANAL., volume 5)

Table of contents

  1. Front Matter
    Pages II-XXVII
  2. K. Biemann
    Pages 26-50
  3. W. L. Butler, K. H. Norris
    Pages 51-72
  4. Hans Moor
    Pages 73-96
  5. Stanley P. Burg
    Pages 97-158
  6. N. K. Boardman
    Pages 159-204
  7. N. K. Boardman
    Pages 205-213
  8. Egon Stahl
    Pages 214-229
  9. F. A. Hommes, H. F. Linskens
    Pages 230-249
  10. E. F. Woods, I. J. O’;Donnell
    Pages 325-335
  11. O. Kratky
    Pages 336-358
  12. J. A. van der Veken, D. H. M. van Slogteren, J. P. H. van der Want
    Pages 422-463
  13. B. Breyer
    Pages 464-493
  14. J. V. Possingham, P. S. Davis
    Pages 494-509
  15. Back Matter
    Pages 510-536

About this book

Introduction

123 phase and hence have no direct bearing on the retention time of solutes. However in gas-solid chromatography, a considerable quantity of the mobile phase may be adsorbed on the surface of the stationary adsorbent which diminishes the column's effective length and ability to retain solutes. In this respect helium has been found to be preferable to most other gases (GREENE and Roy, 1957) because it is adsorbed to the least extent. 3. Packed columns offer a considerable resistance to flow, which may create a pressure differential between inlet and outlet of sufficient magnitude to cause an unfavorable flow rate through a significant length of the column. A reduced inlet/outlet pressure ratio can be obtained by using light molecular weight gases toward which the column packing shows the greatest permeability. The flow rate of the mobile phase is normally adjusted by altering the column inlet pressure, for which purpose commercial pressure regulators of sufficient accuracy are available. Quantitative measurements of the flow rate can be made by a number of methods, including rotameters, orifice meters, soapfilm flow meters and displacement of water. The former two methods are the most con­ venient but the least accurate; moreover they create a back pressure and are temperature dependent whereas although the moving soap bubble is cumbersome to employ and unusable for continuous readings, it is preferred when the highest accuracy is required.

Keywords

Chloroplast alkaloids amino acid bacteria carbohydrates cell culture fungi metabolism nitrogen nutrition photosynthesis plant plants protein water

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-642-45993-1
  • Copyright Information Springer-Verlag Berlin Heidelberg 1962
  • Publisher Name Springer, Berlin, Heidelberg
  • eBook Packages Springer Book Archive
  • Print ISBN 978-3-642-45995-5
  • Online ISBN 978-3-642-45993-1
  • Buy this book on publisher's site