1. Trace analysis of high-purity iron by total reflection X-ray fluorescence spectrometry

   • J. S. Chen
   • H. Berndt
   • G. Tölg

   Original Papers Pages: 891 - 894

2. Flame atomic-absorption spectrometric determination of traces of copper, iron, lead and manganese in nitric acid by injection dosation of concentrated solutions neutralized with ammonia

   • Veselin Kmetov
   • Lubomir Futekov

   Original Papers Pages: 895 - 897

3. Adsorptive accumulation voltammetry of copper(II) using complex formation reaction with salicylideneamino-2-thiophenol

   • Shunitz Tanaka
   • Kazuharu Sugawara
   • Mitsuhiko Taga

   Original Papers Pages: 898 - 901

4. Voltammetric study of copper(I) thioacetamide complexes

   • Hao-Ming Jeng
   • Chung-Zen Tsai
   • Tsu-Yen Chang

   Original Papers Pages: 902 - 904

5. Determination of titanium by adsorption-voltammetry with 2-(5-bromo-2-pyridylazo)-5-(diethylamino)-phenol (5-Br-PADAP)

   • Jinkui Zhou
   • Rolf Neeb

   Original Papers Pages: 905 - 907

6. Separation and determination of xanthates in mixtures as dixanthogens by normal-phase HPLC on a diol-phase

   • Chunshan Zhou
   • Albert Bahr
   • Georg Schwedt

   Original Papers Pages: 908 - 911

7. Voltammetric determination of reducing agents and dyestuffs in textile printing pastes

   • Wolfgang Saus
   • Dierk Knittel
   • Eckhard Schollmeyer

   Original Papers Pages: 912 - 916

8. Determination of mineral contents in liquids by means of X-ray fluorescence analysis

   • W. Gödiker
   • H. Rethfeld
   • K. Cammann

   Preliminary Note Pages: 917 - 917

9. Determination of copper(II) by kinetic-catalytic oxidation of ferrocene

   • Minori Kamaya
   • Ichiro Ohuri
   • Tetsuro Murakami

   Short Communications Pages: 918 - 918

10. Preconcentration and determination of trace amounts of cadmium in water as its 1-(2-pyridylazo)-2-naphthol chelate by means of extraction spectrophotometry

    • M. Tanigawa
    • T. Honjo
    • K. Terada

    Short Communications Pages: 919 - 919

11. Determination of traces of tin in silicate rocks by graphite furnace atomic absorption spectrometry

    • Rokuro Kuroda
    • Kazuyuki Kitada
    • Takeshi Katayama

    Short Communications Pages: 919 - 920

12. Destruction of hexacyanoferrates

    • Wolfgang Werner

    Short Communications Pages: 920 - 921

13. Selectivity coefficients of transmitters and pharmaceuticals for K⁺ and NH ₄ ⁺ -selective solid-state contact sensors

    • Andreas Johannes Schäfer
    • Johannes Georg Schindler

    Short Communications Pages: 921 - 921

14. Determination of lavender oil fragrance compounds in blood samples

    • L. Jirovetz
    • G. Buchbauer
    • A. Nikiforov

    Short Communications Pages: 922 - 923

15. Acknowledgement to referees in 1990

    Acknowledgments Pages: 924 - 924