1. The Heinrich-Emanuel-Merck-Prize

   • Gary M. Hieftje
   • Günther Tölg

   Heinrich-Emanuel-Merck-Prize Pages: 181 - 181

2. Editorial

   • Wilhelm Fresenius
   • Ingo Lüderwald

   Editorial Pages: 182 - 182

3. Assuring trueness of analytical results

   • Klaus Doerffel

   Original Papers Pages: 183 - 187

4. Sampling strategy and its effect on the precision of results of ore analysis

   • Oto Mestek
   • Miloslav Suchánek

   Original Papers Pages: 188 - 194

5. Role of metal matrix modifier in ashing and beginning of the atomization process in graphite furnace-atomic absorption spectrometry

   • Kounosuke Ouishi
   • Kazuo Yasuda
   • Kichinosuke Hirokawa

   Original Papers Pages: 195 - 200

6. Identification of nitrates and sulphates with dynamic SIMS

   • M. Fichtner
   • J. Goschnick
   • H. J. Ache

   Original Papers Pages: 201 - 204

7. Arsenic speciation by coupling high-performance liquid chromatography with inductively coupled plasma mass spectrometry

   • C. Demesmay
   • M. Olle
   • M. Porthault

   Original Papers Pages: 205 - 210

8. Transport extraction for trace element separation and preconcentration

   • S. Palágyi
   • T. Braun

   Original Papers Pages: 211 - 214

9. Determination of boron in steel by an ICP emission spectrometric technique

   • J. Ciba
   • B. Smolec

   Original Papers Pages: 215 - 217

10. Multi-element characterization of tobacco smoke condensate

    • V. Krivan
    • G. Schneider
    • U. Reus

    Original Papers Pages: 218 - 225

11. Levels of polychlorinated biphenyls in the lower troposphere of the North- and South-Atlantic Ocean

    • Jörn Schreitmüller
    • Karlheinz Ballschmiter

    Original Papers Pages: 226 - 239

12. A new non-enzymatic tracer for time-resolved fluoroimmunoassay of triazine herbicides

    • Monika Wortberg
    • Karl Cammann
    • Franz Hillenkamp

    Original Papers Pages: 240 - 245

13. Selective separation of Hg(II) from aqueous solutions by the precipitate flotation technique

    • Mohamed A. Kabil

    Short Communications Pages: 246 - 247

14. Determination of tin in copper based alloys using a modified quartz atom-trap (STAT) and flame-atomic absorption spectrophotometry

    • D. Thorburn Burns
    • Narong Chimpalee
    • Michael Harriott

    Short Communications Pages: 248 - 249

15. Determination of pyridine in soil and water samples of a polluted area

    • Ruud J. B. Peters
    • Johannes A. D. van Renesse van Duivenbode

    Short Communications Pages: 249 - 251

16. Evaluation of octadecyl-bonded silica membrane disks for extraction of surfactants from water

    • Y. Yamini
    • M. Ashraf-Khorassani

    Short Communications Pages: 251 - 252

17. Determination of dimethyl-and diethylmercury with HPLC-CVAAS by on-line UV-irradiation

    • R. Falter
    • H. F. Schöler

    Short Communications Pages: 253 - 254