1. Philosophical aspects of modern analytical chemistry

   • Y. A. Zolotov

   Original Papers Pages: 403 - 408

2. Certified reference materials for the determination of cadmium in polyethylene

   • J. Pauwels
   • A. Lamberty
   • C. Bauspiess

   Original Papers Pages: 409 - 411

3. Ultratrace analysis of uranium and thorium in glass

   • U. Rohr
   • L. Meckel
   • H. M. Ortner

   Original Papers Pages: 412 - 423

4. Layer-by-layer analysis of A₄B₆ thin-film heterostructures using inductively coupled plasma atomic fluorescence spectrometry (ICP-AFS)

   • V. B. Bobruiko
   • G. G. Glavin
   • G. N. Maso

   Original Papers Pages: 424 - 427

5. Comparison of the efficiencies of on-line and high-pressure closed vessel approaches to microwave heated sample decomposition

   • Henryk Matusiewicz
   • Ralph E. Sturgeon

   Original Papers Pages: 428 - 433

6. Determination of small concentrations of hafnia in zirconia by selective excitation energy dispersive X-ray emission spectrometry

   • R. M. Agrawal
   • S. N. Jha
   • B. L. Jangida

   Original Papers Pages: 434 - 437

7. Efficiency of a new poly(acrylamidrazone-hydrazide lacmoid) chelating fibre for preconcentrating and separating traces of chromium, gallium, indium and titanium from solutions

   • Xi-Jun Chang
   • Xing-Yin Luo
   • Wen-Yun Gao

   Original Papers Pages: 438 - 441

8. Determination of lead in natural waters using flow injection with on-line preconcentration and flame AAS detection

   • D. Rodríguez
   • P. Fernández
   • C. Cámara

   Original Papers Pages: 442 - 446

9. Direct potentiometric immunoelectrodes

   • Lydia Engel
   • Wolfram Baumann

   Original Papers Pages: 447 - 450

10. Determination of glycols by HPLC with refractive index detection

    • L. Nitschke
    • L. Huber

    Original Papers Pages: 451 - 453

11. Boron analysis in biological material: microwave digestion procedure and determination by different methods

    • Susan Evans
    • Urs Krähenbühl

    Original Papers Pages: 454 - 459

12. Properties and binding forms of cadmium and nickel in protein extracts from bean seeds (Phaseolus vulgaris L.)

    • Kirsten Lange-Hesse
    • Lothar Dunemann
    • Georg Schwedt

    Original Papers Pages: 460 - 464

13. Study of the stability of gonyautoxins in acidic solution

    • M. C. Louzao
    • A. Alfonso
    • L. M. Botana

    Original Papers Pages: 465 - 468

14. Determination of sulphite in wine by flow injection analysis with indirect electrochemical detection

    • N. T. K. Thanh
    • L. G. Decnop-Weever
    • W. T. Kok

    Original Papers Pages: 469 - 472

15. New type of matrix for matrix-assisted laser desorption mass spectrometry of polysaccharides and proteins

    • Jürgen O. Metzger
    • Ralf Woisch
    • Raimond Angermann

    Short Communications Pages: 473 - 474

16. Flow injection analysis of cationic disinfectants in pharmaceuticals using ion associates formed between sulphonephthalein dyes and quinidine

    • T. Sakai
    • H. Ohta
    • H. Sasaki

    Short Communications Pages: 475 - 476

17. Differential pulse polarographic determination of trace levels of iron(III) by using the catalytic current

    • Bharathibai J. Basu
    • D. K. Padma
    • S. R. Rajagopalan

    Short Communications Pages: 477 - 478

18. Extraction-spectrophotometric determination of nickel as Ni-(PAR)₂-(CTAB)₂ complex in polymetallic sea-bed nodules and steels

    • S. N. Bhadani
    • Madhu Tewari
    • K. Chandra Sekhar

    Short Communications Pages: 478 - 481

19. Liquid-liquid extraction of ⁹⁹Mo and ¹⁸⁷W with trioctylamine

    • N. R. Das
    • Susanta Lahiri

    Short Communications Pages: 481 - 482