1. Membrane separation in flow injection systems

   • J. F. van Staden

   Review Pages: 271 - 302

2. Predicting 1-octanol-water partition coefficient by high-performance liquid chromatography gradient elution

   • A. Kaune
   • M. Knorrenschild
   • A. Kettrup

   Original Papers Pages: 303 - 312

3. Imaging SIMS for the investigation of substrate surfaces for CVD diamond deposition

   • R. Steiner
   • G. Stingeder
   • B. Lux

   Original Papers Pages: 313 - 317

4. Critical comparison of ICP-OES, XRF and fluorine volatilization-FTIR spectrometry for the reliable determination of the silicon main constituent in ceramic materials

   • G. Kaiser
   • A. Meyer
   • G. Tölg

   Original Papers Pages: 318 - 326

5. Trace analysis of rare earth elements and other impurities in high purity scandium by inductively coupled plasma mass spectrometry after liquid-liquid extraction of the matrix

   • V. K. Panday
   • J. S. Becker
   • H. -J. Dietze

   Original Papers Pages: 327 - 334

6. Behaviour of manganese in the calcareous seawaters from the English channel: An electron spin resonance study

   • A. Boughriet
   • M. Wartel
   • H. Chamley

   Original Papers Pages: 335 - 340

7. Coprecipitation/accumulation/distribution of manganese and iron, and electrochemical characteristics of Mn in calcareous seawater

   • A. Boughriet
   • C. Cordier
   • M. Wartel

   Original Papers Pages: 341 - 353

8. Determination of total chromium in fresh water by atomic absorption spectrometry following flotation preconcentration

   • Katarina Čundeva
   • Trajče Stafilov

   Original Papers Pages: 354 - 356

9. Sensitized photo-oxidation of methylcyclohexane as a thin film on seawater by irradiation with natural sunlight

   • Manfred G. Ehrhardt
   • Rolf R. Weber

   Original Papers Pages: 357 - 363

10. Determination of organochlorine pesticides in animal diet: A comparative study of clean-up procedures

    • C. Nerín
    • A. R. Tornés
    • J. Cacho

    Original Papers Pages: 364 - 371

11. Characterization of medieval proteinaceous painting media using gas chromatography and gas chromatography — mass spectrometry

    • Antonella Casoli
    • Piero Mirti
    • Gerardo Palla

    Original Papers Pages: 372 - 379

12. Presence of drugs in different tissues of an egyptian mummy

    • Franz Parsche
    • Andreas Nerlich

    Original Papers Pages: 380 - 384

13. Trace analysis of vinclozoline by gas chromatography with electrolytic conductivity detection and solid-phase extraction

    • P. Just
    • U. Greulach
    • D. Rinne

    Current Research Note Pages: 385 - 387

14. Extractive spectrophotometric determination of rhenium with α-benzildioxime and thiocyanate

    • Anu Wahi
    • Lajpat Rai Kakkar

    Short Communications Pages: 387 - 389

15. Electrochemical characteristics of boron-doped polycrystalline diamond film electrodes

    • Jian Zhong Zhu
    • Shen Zhong Yang
    • Huan Zhang Fan

    Short Communications Pages: 389 - 392

16. Direct inverse voltammetric determination of Pb, Cu and Cd in some edible oils after solubilization

    • Faramarz Wahdat
    • Siegfried Hinkel
    • Rolf Neeb

    Short Communications Pages: 393 - 394

17. A new and sensitive method for the spectrophotometric determination of ethion in environmental and biological samples

    • Joyce Vanisha Das
    • V. K. Gupta

    Short Communications Pages: 395 - 396

18. Determination of trimethoprim by the linear absorbances method

    • M. C. Pascual-Martí
    • R. Marin Saez
    • J. M. Iranzo Adrian

    Short Communications Pages: 396 - 397

19. HPLC analysis of metal chelating agents in micronutrients

    • U. Göttlicher
    • R. Siegfried
    • H. Birke

    Short Communications Pages: 398 - 400

20. Traceability of measurement and calibration in chemical analysis

    • Werner Hässelbarth

    Letter To The Editor Pages: 400 - 402

21. On-line fractionation and characterization of aquatic humic substances by means of sequential-stage ultrafiltration

    • P. Burba
    • Valerij Shkinev
    • Boris Ya. Spivakov

    Erratum Pages: 402 - 402