1. Stephen A. Wise — Regional editor for North America

   Editorial Pages: 1 - 1

2. Acknowledgement to referees in 1994

   Editorial Pages: 2 - 2

3. Calibration — A multidimensional approach

   • K. Danzer

   Review Pages: 3 - 10

4. Applicability of microwave induced plasma optical emission spectrometry (MIP-OES) for continuous monitoring of mercury in flue gases

   • V. Siemens
   • T. Harju
   • J. A. C. Broekaert

   Original Papers Pages: 11 - 18

5. Evaluation of a diffusive sampling method for the determination of atmospheric ammonia

   • Wolfgang Frenzel
   • Ewald Grimm
   • Gesa Gruetzmacher

   Original Papers Pages: 19 - 26

6. A continuous flow instrument with flow regulation and automatic sensitivity range adaptation for the determination of atmospheric H₂S

   • W. Jaeschke
   • H. Schunn
   • W. Haunold

   Original Papers Pages: 27 - 32

7. Application of the denuder technique in filter sampling of airborne chromates at ground level concentrations

   • O. Rohling
   • B. Neidhart

   Original Papers Pages: 33 - 40

8. Adsorptive preconcentration technique including oxidant scavenging for the measurement of reactive natural hydrocarbons in ambient air

   • T. Holfmann

   Original Papers Pages: 41 - 47

9. Geostatistical investigations of polluted soils

   • J. Einax
   • U. Soldt

   Original Papers Pages: 48 - 53

10. Characterization of NOM-colloid aggregates in surface waters: Coupling transmission electron microscopy staining techniques and mathematical modelling

    • K. J. Wilkinson
    • S. Stoll
    • J. Buffle

    Original Papers Pages: 54 - 61

11. The three-dimensional structure of humic substances and soil organic matter studied by computational analytical chemistry

    • H. -R. Schulten

    Original Papers Pages: 62 - 73

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

    • Peter Burba
    • Valerij Shkinev
    • Boris Ya. Spivakov

    Original Papers Pages: 74 - 82

13. Evaluation of conditional stability constants of dissolved aluminum/humic substance complexes by means of ²⁷Al nuclear magnetic resonance

    • J. Lambert
    • J. Buddrus
    • P. Burba

    Original Papers Pages: 83 - 87

14. Studies on the behaviour of dihalogenated hydroxybenzonitriles in water

    • J. Nolte
    • F. Heimlich
    • G. Preuss

    Original Papers Pages: 88 - 91

15. Oxidative degradation of nitrogen-containing organic compounds: vaccum-ultraviolet (VUV) photolysis of aqueous solutions of 3-amino 5-methylisoxazole

    • Mónica C. Gonzalez
    • Tarek M. Hashem
    • André M. Braum

    Original Papers Pages: 92 - 97

16. Isomer-specific determination of 79 polychlorinated diphenyl ethers (PCDE) in cod liver oils, chlorophenols and in a fly ash

    • Joachim Kurz
    • Karlheinz Ballschmiter

    Original Papers Pages: 98 - 109

17. Analysis of silicon carbide powders with ICP-MS subsequent to sample dissolution without and with matrix removal

    • C. Pilger
    • F. Leis
    • G. Tölg

    Original Papers Pages: 110 - 116

18. Radiochemical neutron activation analysis of ultra-pure molybdenum-based microelectronic materials for detrimental impurities

    • V. Krivan
    • M. Franek

    Original Papers Pages: 117 - 124

19. Analysis of oxide dusts by SNMS

    • K. H. Koch
    • D. Sommer
    • D. Grunenberg

    Original Papers Pages: 125 - 128

20. Isotopic fingerprint method: Assessment of the origin of rare earth compounds from the isotope ratios of lead impurities

    • K. H. Lieser
    • W. Fey

    Original Papers Pages: 129 - 133

21. Reactive supercritical fluid extraction and chromatography of arsenic species

    • B. W. Wenclawiak
    • M. Krah

    Original Papers Pages: 134 - 138

22. Atomic absorption spectroscopic determination of molybdenum in aqueous tetrathiomolybdate solutions

    • Anastasios Voulgaropoulos
    • Aristomenis Ayiannidis
    • Stella Giroussi

    Short Communication Pages: 139 - 140