1. Research Group for Analytical Chemistry, Hungarian Academy of Sciences, P.O. Box 158, H-8201 Veszprém, Hungary
2. Centre for Instrumental and Developmental Chemistry, Queensland University of Technology, 2 George Street, GPO Box 2434 Brisbane, Q 4001, Australia
3. Department of Analytical Chemistry, University of Veszprém, P.O. Box 158, H-8201 Veszprém, Hungary
4. Research Institute of Chemical Engineering, Hungarian Academy of Sciences, P.O. Box 125, H-8201 Veszprém, Hungary