1. Ultra-trace analysis of U, Th, Ca and selected heavy metals in high purity refractory metals with isotope dilution mass spectrometry

   • Peter Herzner
   • Klaus G. Heumann

   Original Papers Pages: 127 - 135

2. Decomposition of vegetables for determination of Zn, Cd, Pb and Cu by stripping voltammetry

   • Viqar-Un-Nisa
   • Riaz Ahmed

   Original Papers Pages: 137 - 141

3. Estimation of hydrogen peroxide formed and residual ascorbate in the copper catalysed oxidation reaction of ascorbate at pH 7

   • Warren L. Baker
   • Jennifer Goode
   • Lynne Cooper

   Original Papers Pages: 143 - 152

4. Use of quercetin in an improved method for molybdenum determination in waste water, silicate rocks and diverse alloys

   • Mohamed Tarek Mohamed Zaki
   • Abdel -Aziz Yousef El-Sayed

   Original Papers Pages: 153 - 161

5. Comparison of depth profiles in SIMS by a fuzzy method

   • Matthias Otto
   • Gerhard Stingeder
   • Michael Heinrich

   Original Papers Pages: 163 - 173

6. High speed determination of sulfate by nonsuppressed ion chromatography

   • Wolfgang Frenzel
   • Annette Rauterberg

   Original Papers Pages: 175 - 182

7. Indirect determination of perchlorate by atomic absorption spectrometry

   • Sarnath Chattaraj
   • Kuntala De
   • Arabinda K. Das

   Original Papers Pages: 183 - 190

8. Application of an on-line preconcentration system in simultaneous ICP-AES

   • Peter Schramel
   • Li -Qiang Xu
   • Markus Michaelis

   Original Papers Pages: 191 - 201

9. Kinetic-spectrophotometric determination of molybdenum (VI) and tungsten (VI) in mixtures

   • Constantine G. Papadopoulos
   • Anastasia C. Zotou

   Original Papers Pages: 203 - 210

10. Determination of bromide and nitrite by indirect redox titration using phenyl iodosoacetate

    • Santosh K. Vaidya
    • Chandrika Damodaran
    • Krishna K. Verma

    Original Papers Pages: 211 - 217

11. Retention-indices on OV-1 of approximately 170 commonly used pesticides

    • Freidoon Erdmann
    • Gertrud Rochholz
    • Harald Schütz

    Original Papers Pages: 219 - 226

12. Simultaneous determination of cobalt and chromium by ion chromatography with chemiluminescence detection and its application to glass analysis

    • Maria Antonia Marina-Sánchez
    • Marta Elena Díaz-García
    • Alfredo Sanz-Medel

    Original Papers Pages: 227 - 234

13. Kinetic determination of 1,3-propanediamine-N,N′-diacetic-N,N′-di-3-propionic acid and in a mixture with ethylenediaminetetra-acetic acid

    • Gordana A. Milovanović
    • Nevenka Vučić

    Original Papers Pages: 235 - 240

14. Speciation of thallium in river sediments by consecutive leaching techniques

    • Manfred Sager

    Original Papers Pages: 241 - 251

15. Microscale preconcentration by liquid-liquid extraction of cadmium in indium and nickel

    • Tatsuhiko Tanaka
    • Nobuaki Makino
    • Atsushi Mizuike

    Original Papers Pages: 253 - 259

16. Solvent extraction separation of gallium with 18crown6 from chloride media

    • Ravindra G. Vibhute
    • Shripad M. Khopkar

    Original Papers Pages: 261 - 265

17. Ion-pair extractions by the use of planar and non-planar extracting solvents

    • Akira Ohki
    • Kazuya Tsukada
    • Makoto Takagi

    Original Papers Pages: 267 - 276

18. Tandem on-line continuous separations for atomic spectroscopic indirect analysis: Iodide determination by ICP-AES

    • Alberto Menéndez García
    • José Enrique Sánchez Uría
    • José Cotrino Bautista

    Original Papers Pages: 277 - 285

19. The effect of surfactants on the pH transition interval of bromothymol blue immobilized on XAD 4

    • David C. Ashworth
    • Ramaier Narayanaswamy

    Original Papers Pages: 287 - 292

20. Direct determination of tocopherols in paprika and paprika oleoresin by liquid chromatography

    • Pilar Viñas
    • Natalia Campillo
    • Manuel Hernández Córdoba

    Original Papers Pages: 293 - 302

21. A study of the reaction of Se(IV) with 3,4-diaminobenzoic acid and 4-bromo-1, 2-phenylenediamine

    • Barbara Kasterka

    Original Papers Pages: 303 - 318

22. Fluorometric determination of diphenhydramine by flow-injection analysis

    • J. Martinez Calatayud
    • F. J. Blasco Martinez
    • S. Sagrado Vives

    Original Papers Pages: 319 - 325

23. Effect of the solvent on the equilibria of acid-base indicators in aprotic and amphiprotic solvents

    • José Barbosa
    • Carles M. Bosch
    • Victoria Sanz-Nebot

    Original Papers Pages: 327 - 337

24. Announcement

    Announcement Pages: 339 - 341

25. Conference calendar

    Events Pages: 343 - 344