1. Cryofocusing in the combination of gas chromatography with equilibrium headspace sampling

   • B. Kolb
   • B. Liebhardt
   • L. S. Ettre

   Originals Pages: 305 - 311

2. Determination of the lipophilicity of some aniline derivatives by reversed-phase thin-layer chromatography. The effect of salts

   • T. Cserháti
   • B. Bordás
   • M. Szögyi

   Originals Pages: 312 - 316

3. Mixed mode chromatography via column switching for the simultaneous HPLC analysis of lonic and non-lonic nucleic acid constituents

   • Anne P. Halfpenny
   • Phyllis R. Brown

   Originals Pages: 317 - 320

4. Chiral separation of aminoalcohols by ion-pair chromatography

   • C. Pettersson
   • M. Josefsson

   Originals Pages: 321 - 326

5. Remarks on the detection of aza arenes in airborne particulates

   • R. Tomingas
   • W. Mönch
   • U. Matthiesen

   Originals Pages: 327 - 330

6. Demixing effects in thin-layer chromatography with NH₂-modified silica gel precoated plates

   • L. Zlatanov
   • C. Gonnet
   • M. Marichy

   Originals Pages: 331 - 334

7. Effects of stationary-phase polarity on retention in reversed bonded phase HPLC columns

   • W. T. Cooper
   • Li-Ying Lin

   Originals Pages: 335 - 341

8. A review of direct liquid introduction interfacing for LC/MS Part II: Mass spectrometry and applications

   • W. M. A. Niessen

   Review Paper Pages: 342 - 354

9. Book reviews

   • E. R. Adlard
   • David B. Jack

   BookReview Pages: 355 - 355

10. Announcements

    Announcement Pages: 356 - 363

11. New products

    Announcement Pages: 364 - 371