1. Editorial

   • W. Fresenius
   • H. Malissa

   EditorialNotes Pages: A5 - A5

2. Simultaneous determination of traces of impurities in high-purity molybdenum and molybdenum trioxide by coprecipitation and inductively coupled plasma-atomic emission spectrometry

   • Osamu Kujirai
   • Kei Yamada
   • Haruno Okochi

   Original Papers Pages: 133 - 136

3. Voltammetric determination of traces of cobalt(II) with a chemically modified carbon paste electrode

   • Zhiqiang Gao
   • Peibiao Li
   • Zaofan Zhao

   Original Papers Pages: 137 - 141

4. Influence of tin(II) chloride on the solvent extraction of platinum group metals with N,N-di-n-hexyl-N'-benzoylthiourea

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

   Original Papers Pages: 142 - 144

5. Determination of platinum and iridium in reforming catalysts by second derivative and absorptiometric spectrophotometry

   • J. Tummavuori
   • S. Hankala
   • L. Siltaloppi

   Original Papers Pages: 145 - 150

6. Determination of carbamate pesticides and some urea pesticides after derivatization with acetic anhydride by means of GC-MSD

   • H. -J. Stan
   • P. Klaffenbach

   Original Papers Pages: 151 - 157

7. Determination of triazine herbicides with GC/MS under EI, methane CI and ammonia CI conditions detecting positive and negative ions

   • H. -J. Stan
   • A. Bockhorn

   Original Papers Pages: 158 - 165

8. Differential-pulse adsorptive stripping voltammetry of the herbicides metamitron and isometiozine

   • M. A. Goicolea
   • J. F. Arranz
   • Z. Gómez de Balugera

   Original Papers Pages: 166 - 168

9. On the description of lead pollution in plants caused by traffic under application of robust statistics

   • J. Einax
   • B. Machelett
   • K. Danzer

   Original Papers Pages: 169 - 172

10. Certified reference materials chlorobiphenyls (IUPAC nos 28, 52, 101, 118, 153 and 180) in dried sewage sludge — CRM 392

    • B. Griepink
    • E. A. Maier
    • D. E. Wells

    Original Papers Pages: 173 - 180

11. INAA and flame AAS of various vegetable reference materials

    • R. Djingova
    • S. Arpadjan
    • I. Kuleff

    Original Papers Pages: 181 - 186

12. Study of the electrochemical behaviour of metaclazepam in aqueous media and its determination in biological fluids

    • E. González
    • L. Hernández

    Original Papers Pages: 187 - 192

13. Voltammetric determination of 4-chloro-3-methylphenol at a glassy carbon electrode

    • E. Chico Guijarro
    • P. Yáñez-Sedeño
    • L. M. Polo Díez

    Original Papers Pages: 193 - 196

14. Spectrophotometric determination of trace amounts of molybdenum using morin and cetylpyridinium chloride

    • M. Tarek M. Zaki
    • A. K. Abdel-Kader
    • M. M. Abdalla

    Short Communications Pages: 197 - 198

15. Spectrophotometric determination of phenol in air

    • Sulbha Amlathe
    • V. K. Gupta

    Short Communications Pages: 199 - 200