7Th European Conference on Electroanalysis (Eseac 98), Date: MAY 24-28, 1998, Location: COIMBRA, PORTUGAL, Patrocinadores: European Soc ElectroAnal Chem, Int Soc Electrochem, Div 3 Anal Electrochem, Portuguese Chem Soc, Div Anal Chem, Host: UNIV COIMBRA