USE OF ISOCYANATES FOR ASSAYING NUCLEOPHILIC FUNCTIONS IN THE FORM OF TRACES IN WET MEDIUM

摘要

The invention concerns methods for detecting traces of pollutants in aqueous media, characterised in that it consists in using isocyanates to react on the nucleophilic functions in the from of traces in a wet medium. The method for assaying nucleophilic functions in a wet medium consists in the following phases: adding isocyanates to an aqueous solution of basic pH containing the nucleophilic function to be tested; maintaining the solution for an interval ranging from a few minutes to several dozens of minutes at a temperature lower than 100 DEG C; assaying the resulting carbamate, thiocarbamate or urea.