1. The rapid quantitative determination of aromatic-type groups in gas oils by high-performance liquid chromatography

   • S. C. F. Robison

   Originals Pages: 439 - 442

2. Calculation of retention indices of isoparaffins on different phases

   • N. Dimov
   • D. Papazova

   Originals Pages: 443 - 447

3. Synthetic inorganic ion exchangers. XI. Preparation, properties and ion-exchange behaviour of zirconium tungstate

   • A. K. De
   • N. D. Chowdhury

   Originals Pages: 448 - 450

4. Berechnung von Retentionsindices auf der Grundlage eines nichtlinearen Zusammenhanges zwischen Nettoretentionszeit und Kohlenstoffzahl von n-Alkanen

   • F. J. Heeg
   • R. Zinburg
   • K. Ballschmiter

   Originals Pages: 451 - 458

5. Anion-exchange chromatographic separation of Bi and Sb from As, Sn and other elements in malonic acid solution

   • M. Chakravorty
   • S. M. Khopkar

   Originals Pages: 459 - 462

6. Adsorption properties of thermally pretreated porasils

   • E. Smolková
   • L. Feltl
   • J. Zima

   Originals Pages: 463 - 466

7. The efficiency of open tubular gas chromatographic columns part II. A comparison of theoretical equations for the efficiency of support coated open tubular columns

   • I. Brown

   Originals Pages: 467 - 472

8. Distribution studies of metal ions on arsenophosphates of Sn(IV) and Cr(III) and on amine Sn(II) hexacyanoferrates (II) using radio tracers: Separation of Sr²⁺−Cs⁺, Hg²⁺−Ag⁺ and Hg²⁺−Zn²⁺

   • K. G. Varshney
   • S. Naheed
   • C. B. Gupta

   Originals Pages: 473 - 475

9. Glyoxal dithiosemicarbazone as a complexing and chromogenic spray reagent in inorganic TLC

   • K. N. Johri
   • K. A. Venugopalan
   • B. S. Arora

   Originals Pages: 476 - 478

10. Rapid qualitative analysis of metallic alloys by electrospot chromatography

    • João A. Medeiros
    • R. N. Damasceno

    Originals Pages: 479 - 483

11. Application of transition metal complex formation in gas chromatography, part I

    • W. Szczepaniak
    • J. Nawrocki
    • W. Wasiak

    Review Paper Pages: 484 - 493

12. The constituents of the drupes of sambucus ebulus. II. Fatty acids, sterols, aliphatic and triterpenic alcohols

    • B. Chiarlo
    • P. Ambrosetti
    • A. Bolla

    Short Communications Pages: 494 - 495

13. Chromatographic separation of some metal ions on NTA-impregnated thin-layer plates

    • S. P. Srivastava
    • V. K. Gupta

    Short Communications Pages: 496 - 497

14. Book reviews

    • A. V. Kiselev
    • R. S. Petrova
    • G. E. P. Elliott

    BookReview Pages: 498 - 499

15. Announcements

    • P. A. Sewell

    Announcement Pages: 499 - 499

16. New products

    Announcement Pages: 500 - 507

17. Papers accepted for publication in chromatographia

    Legacy Pages: 508 - 508

18. Selection of carrier gas velocity in the analysis of a multicomponent sample

    • L. S. Ettre

    Green Papges Pages: 509 - 515