USE OF A SPARINGLY SOLUBLE SALT OF A HETEROPOLY ACID FOR THEDETERMINATION OF AN ANALYTE, A CORRESPONDING METHOD OF DETERMINATION AS WELL AS A SUITABLE AGENT THEREFOR

摘要

The invention concerns the use of a sparingly soluble salt of a heteropoly acid for the determination of an analyte, in particular, when the analyte is an aromatic amine rich in electrons or together with another substance leads to such an amine. In addition, the invention concerns a method for the determination of an analyte by means of heteropoly blue formation which is characterized in that the analyte is reacted with a substance which leads to an aromatic amine rich in electrons which is brought into contact with a sparingly soluble salt of a heteropoly acid as well as a corresponding agent.