From 1996 to 1999 I worked for the PIC secretariat (now Rotterdam Convention). I authored and edited various Decision Guidance Documents about Toxicity and Exotoxicity of Organophosphorous pesticides.
I worked directly on Decision Guidance Documents (DGDs) for these five pesticides: methamidophos, methyl-parathion, monocrotophos, parathion and phosphamidon. The specific formulations of these pesticides may not necessarily be banned or severely restricted in any country, but have been included because of potential problems under conditions of use in developing countries.

„Sostanze Cancerogene"

an MS Access based relational database, containing data about toxicity, classification and evaluation of all substances classified as carcinogens by the European Community; Copyright AST, Dr. Johannes Keizer,

"BioTox"

an MS Access based relational database for elaborating experimental data on the metabolism of various xenobiotics by rat liver microsomes, Copyright AST, Dr. Johannes Keizer,

„Pestinfo"

an MS Access based relational database with comparative information about the 100 most important pesticides used in Italy, Copyright by ISS, 1995, programmed AST, Dr. Johannes Keizer

• mainly collaborated with the PIC secretariat authoring decision guidance documents in the PIC convention to control export and import of organophosphorus pesticides, participated in the preparation of PIC circulars and conferences of the parties (FAO, Plant Protection Service (AGPP))
• developed and hold courses in biology, chemistry and web technology - (Deutsche Schule Rom)

From 1993 to 1998 I gave lessons in Biology, Chemistry and later also Computer Science at the German School in Rome.
I taught students from the 6th grade to the 12th grade.
I also organized the information systems of the school.