1. Outlook for the development of theoretical foundations for the physical methods of analysis

   • G. I. Ramendik

   Original Paper Pages: 233 - 240

2. Selection of internal standards for quantitative analysis by matrix-assisted laser desorption-ionization (MALDI) time-of-flight mass spectrometry

   • William R. Wilkinson
   • Arkady I. Gusev
   • David M. Hercules

   Original Paper Pages: 241 - 248

3. A possible steady state kinetic model for the atomization process during flame atomic spectrometry: Application to mutual atomization interference effects between group I elements

   • Mark F. Zaranyika
   • Peter Makuhunga

   Original Paper Pages: 249 - 257

4. Studies on a new cleaning procedure for PFA-surfaces

   • M. Schuster
   • S. Ringmann
   • J. Dahmen

   Original Paper Pages: 258 - 265

5. Pure graphite as a reference material for the determination of trace elements — an interlaboratory collaborative study

   • W. Bögershausen
   • R. Cicciarelli
   • J. Schelcher

   Original Paper Pages: 266 - 273

6. Determination of tin in marine sediment slurries by electrothermal atomic absorption spectrometry using palladium-magnesium nitrate as chemical modifier

   • Pilar Bermejo-Barrera
   • Carmen Barciela-Alonso
   • Adela Bermejo-Barrera

   Original Paper Pages: 274 - 278

7. New human hair certified reference material for methylmercury and trace elements

   • Jun Yoshinaga
   • Masatoshi Morita
   • Kensaku Okamoto

   Original Paper Pages: 279 - 283

8. Investigation of potential-sensitive fluorescent dyes for application in nitrate sensitive polymer membranes

   • Gerhard J. Mohr
   • Frank Lehmann
   • Otto S. Wolfbeis

   Original Paper Pages: 284 - 291

9. In-situ characterization of thin polymer films for applications in chemical sensing of volatile organic compounds by spectroscopic ellipsometry

   • Karin Spaeth
   • Gerolf Kraus
   • Günter Gauglitz

   Original Paper Pages: 292 - 296

10. Reagentless amperometric biosensor highly sensitive to hydrogen peroxide based on the incorporation of Meldola Blue, fumed-silica and horseradish peroxidase into carbon paste

    • Haiying Liu
    • Zhanen Zhang
    • Deyao Qi

    Original Paper Pages: 297 - 301

11. Amperometric methylene blue-mediated sensor highly sensitive to hydrogen peroxide based on a composite membrane of regenerated silk fibroin and poly-vinyl alcohol as immobilization matrix for horseradish peroxidase

    • Haiying Liu
    • Jianghong Qian
    • Deyao Qi

    Original Paper Pages: 302 - 307

12. Novel dissolution procedure using a mixture of manganese dioxide and hydrochloric acid for the matrix-independent determination of gold

    • P. Chattopadhyay
    • M. Mistry

    Original Paper Pages: 308 - 313

13. Determination of Hf, Sc and Y in geological samples together with the rare-earth elements

    • Nadejda Lihareva
    • Michel Delaloye

    Original Paper Pages: 314 - 316

14. Improvement of an old spectrophotometric method for the microdetermination of ascorbic acid by the use of a micellar medium

    • Prodromos B. Issopoulos
    • Sofia E. Salta

    Original Paper Pages: 317 - 320

15. Application of ion exclusion chromatography (IEC) for the determination of sugar and carboxylic acids in hydrolysates from carbohydrate containing residues

    • H. P. Bipp
    • K. Fischer
    • A. Kettrup

    Original Paper Pages: 321 - 325

16. Determination of phenolic compounds in waste water by solid-phase micro extraction

    • M. Möder
    • S. Schrader
    • P. Popp

    Original Paper Pages: 326 - 332

17. Monitoring degradation processes of explosives by HPLC analysis with UV- and amperometric detection

    • Kathrin Spiegel
    • Thomas Welsch

    Original Paper Pages: 333 - 337

18. Determination of theophylline in serum by high performance liquid chromatography/mass spectrometry with atmospheric pressure chemical-ionization (APCI HPLC/MS)

    • F. Susanto
    • H. Reinauer

    Original Paper Pages: 338 - 344

19. Acoustically levitated droplets — a new tool for micro and trace analysis

    • E. Welter
    • B. Neidhart

    Current Research Note Pages: 345 - 350

20. Determination of iron and lead by flame atomic absorption spectrometry after preconcentration with sepiolite

    • A. Rehber Türker
    • Hüseyin Bağ
    • Baki Erdoğan

    Short Communications Pages: 351 - 353

21. Determination of N-n-alkyl-dimethylmorpholines and their metabolites by high resolution GC/MS

    • H. Klöppel
    • H. Jürling

    Short Communications Pages: 353 - 355

22. Field determination of molybdenum in soils

    • S. Chikhalikar
    • K. S. Patel

    Short Communications Pages: 355 - 356

23. Determination of trigonelline in green and roasted coffee from single column ionic chromatography

    • María J. Martín
    • Fernando Pablos
    • A. Gustavo González

    Short Communications Pages: 357 - 358