1. Preparative LC separation and isolation of enantiomerically pure olefins

   • J. Köhler
   • A. Deege
   • G. Schomburg

   Originals Pages: 119 - 124

2. Determination of hydrazine and 1,1-dimethylhydrazine as salicyldehyde derivates by liquid chromatography with electrochemical detection

   • P. E. Kester
   • N. D. Danielson

   Originals Pages: 125 - 128

3. Optimization of a peroxyoxalate chemiluminescence detection system for the liquid chromatographic determination of fluorescent compounds

   • G. J. de Jong
   • N. Lammers
   • R. W. Frei

   Originals Pages: 129 - 133

4. Characteristics of the activity coefficients in binary solutions on chromatographic paper

   • T. Kowalska

   Originals Pages: 134 - 136

5. Air-sampling of aldehydes—Application to chromatographic determination of formaldehyde and acetaldehyde

   • J. P. Guenier
   • P. Simon
   • J. Muller

   Originals Pages: 137 - 144

6. Solvent selection in liquid-solid chromatography of steroids

   • S. M. Petrović
   • Lj. A. Kolarov
   • J. A. Petrović

   Originals Pages: 145 - 148

7. Thin-layer chromatography of 1,2,4-triazoles on silica gel

   • J. Thomas

   Originals Pages: 149 - 152

8. Isolation methods for the volatile components of grapefruit juice. Distillation and solvent extraction methods

   • A. J. Núñez
   • J. M. H. Bemelmans
   • H. Maarse

   Originals Pages: 153 - 158

9. Book reviews

   • David B. Jack
   • H. Engelhardt

   BookReview Pages: 158 - 158

10. Announcements

    Announcement Pages: 161 - 162

11. New products

    Announcement Pages: 162 - 169