1. Competition “analytical chemistry — today's definition and interpretation”

   • M. Grasserbauer

   Editorial Pages: A9 - A9

2. Information theory in analytical chemistry

   • K. Danzer
   • M. Schubert
   • V. Liebich

   Original Papers Pages: 511 - 518

3. The shape of CUSUM — an indicator for tendencies in a time series

   • Klaus Doerffel
   • Günther Herfurth
   • Editha Wendlandt

   Original Papers Pages: 519 - 523

4. Development of a gas standard reference material containing eighteen volatile organic compounds

   • George C. Rhoderick

   Original Papers Pages: 524 - 531

5. Heterogeneous hydride generation in a packed membrane cell

   • Solomon Tesfalidet
   • Knut Irgum

   Original Papers Pages: 532 - 536

6. Osmium isotope ratio measurements by negative thermal ionization mass spectrometry (NTI-MS)

   • Thomas Walczyk
   • Erhard H. Hebeda
   • Klaus G. Heumann

   Original Papers Pages: 537 - 541

7. Recovery of thorium-Arsenazo III complex from very dilute solutions by a bubble extraction apparatus

   • Giovanni Vallebona
   • Giorgio Raspi

   Original Papers Pages: 542 - 544

8. Simultaneous determination of iron(II), iron(III), and titanium(IV) by flow injection analysis using kinetic spectrophotometry with Tiron

   • Koichi Oguma
   • Shoji Kozuka
   • Rokuro Kuroda

   Original Papers Pages: 545 - 549

9. Analysis of tantalum by ICP-AES involving trace-matrix separation

   • V. Krivan
   • R. Hausbeck
   • H. M. Ortner

   Original Papers Pages: 550 - 554

10. Determination of tetraethyllead and tetramethyllead using high performance liquid chromatography and electrochemical detection

    • M. Robecke
    • K. Cammann

    Original Papers Pages: 555 - 558

11. Hydrogeological application of trace element analysis with ICP-AES for the characterization of groundwater categories at the foot of the Swiss Jura between Geneva and Lausanne

    • H. Lahl
    • Y. Lavanchy

    Original Papers Pages: 559 - 563

12. Elucidation of biochemical formation of C₁/C₂-(bromo-/chloro)-hydrocarbons

    • B. Walter
    • K. Ballschmiter

    Short Communications Pages: 564 - 566

13. Solvent extraction of gold with N-substituted benzoylthioureas

    • P. Vest
    • M. Schuster
    • K. -H. König

    Short Communications Pages: 566 - 568

14. Comparative determinations of cadmium and lead in phosphorites dissolved in nitric acid and aqua regia using differential pulse anodic stripping voltammetry and atomic absorption spectrophotometry

    • A. Voulgaropoulos
    • M. Paneli
    • S. Stavroulias

    Short Communications Pages: 568 - 569

15. Selective separation of arsenic(III) from water and sea water by flotation with thionalide

    • Susumu Nakashima

    Short Communications Pages: 570 - 571

16. Determination of Cd in Navajuelas (Tagelus dombeii) by differential pulse anodic stripping voltammetry (DPASV)

    • F. Queirolo
    • P. Ostapczuk
    • A. Sanchez

    Short Communications Pages: 571 - 571