1. A new managing editor and the electronic future

   • W. Fresenius

   Editorial Pages: 361 - 361

2. Empirical procedure for the reduction of mixed-matrix effects in inductively coupled plasma atomic emission spectrometry using an internal standard and proportional correction

   • Jan L. M. de Boer
   • Maurice Velterop

   Original Paper Pages: 362 - 370

3. Spectrophotometric determination of thallium in zinc and zinc-base alloys with iodoacetic acid and hexamethylenetetramine

   • Dragan Mihajlović
   • Trajče Stafilov

   Original Paper Pages: 371 - 374

4. Separation of Cr(III) and Cr(VI) using melamine-formaldehyde resin and determination of both species in water by FAAS

   • B. Demirata
   • I. Tor
   • H. Afşar

   Original Paper Pages: 375 - 377

5. Analytical characterization of the persistent residues after microbial degradation of mineral oils

   • Volker Riis
   • Dietmar Miethe
   • Monika Möder

   Original Paper Pages: 378 - 384

6. Determination of carbonyl compounds in exhaust gas by using a modified DNPH-method

   • Jörg Lange
   • Stephan Eckhoff

   Original Paper Pages: 385 - 389

7. Determination of aromatic hydrocarbons in air using diffusion denuders

   • Uwe Risse
   • Elke Flammenkamp
   • Antonius Kettrup

   Original Paper Pages: 390 - 395

8. Modified sampling and analysis method for large volatility range airborne polycyclic aromatic hydrocarbons (PAH) using gas chromatography-mass spectrometry

   • S. Wybraniec
   • A. P. de Jong

   Original Paper Pages: 396 - 402

9. Determination of resin acids in pulp mill EOP bleaching process effluent

   • Friederike Dethlefs
   • Hans-Jürgen Stan

   Original Paper Pages: 403 - 410