1. ANAKON '91

   • H. Günzler

   Editorial Pages: 759 - 759

2. The role of analytical testing in the quality system

   • Volker Czabon

   Quality Assurance In Analytical Chemistry Pages: 760 - 763

3. Quality in analytical chemistry

   • Edzard Hartmann

   Quality Assurance In Analytical Chemistry Pages: 764 - 768

4. Validation of analysis methods

   • S. Ebel

   Quality Assurance In Analytical Chemistry Pages: 769 - 778

5. Does “good laboratory practice” automatically mean “good analytical practice”?

   • W. Merz
   • U. Weberruß
   • R. Wittlinger

   Quality Assurance In Analytical Chemistry Pages: 779 - 782

6. From quality inspection to quality assurance

   • Wolfgang Werner

   Quality Assurance In Analytical Chemistry Pages: 783 - 786

7. Quality requirements during analysis

   • W. Arnold
   • H. Sachs

   Quality Assurance In Analytical Chemistry Pages: 787 - 790

8. Selective complexing agents for the trace enrichment of platinum metals

   • M. Schuster

   Forum Analyticum Pages: 791 - 794

9. Mercury analysis: a special example of species analysis

   • R. -D. Wilken

   Forum Analyticum Pages: 795 - 801

10. Coupling techniques in speciation analysis

    • Lothar Dunemann

    Forum Analyticum Pages: 802 - 804

11. Gas chromatographic and mass spectrometric studies on pyrethroid photo- and biotransformation

    • Thomas J. Class

    Forum Analyticum Pages: 805 - 808

12. Determination of organic alkyl- and 1-hydroxy hydroperoxides with chemiluminescence, fluorescence and GC/MS

    • K. Bächmann
    • J. Hauptmann
    • P. Schütz

    Environmental Analysis Pages: 809 - 812

13. Pesticides in the atmosphere

    • J. Scharf
    • R. Wiesiollek
    • K. Bächmann

    Environmental Analysis Pages: 813 - 816

14. Membrane based gas sampling and analysis coupled to continuous flow systems

    • Wolfgang Frenzel

    Environmental Analysis Pages: 817 - 821

15. A new screening procedure for the estimation of oxidizable organic compounds in water samples

    • B. Ruchti
    • C. Schramm
    • B. Neidhart

    Environmental Analysis Pages: 822 - 826

16. Formation of C₁/C₂-bromo-/chloro-hydrocarbons by haloperoxidase reactions

    • B. Walter
    • K. Ballschmiter

    Environmental Analysis Pages: 827 - 833

17. Sorbents for liquid chromatography based on the footprint principle

    • Günter G. Kaiser
    • Jan T. Andersson

    Chromatography Pages: 834 - 838

18. Sensitive fluorescence labelling for analysis of organotin compounds with morin

    • M. Pfeffer
    • B. Gelbe
    • B. Wykhoff

    Chromatography Pages: 839 - 845

19. Analysis of silicone resins by methods of ²⁹Si NMR spectroscopy

    • Harald Jancke

    Preliminary Note Pages: 846 - 849