METHOD OF DETERMINING ANALYTICALLY DETERMINABLE SUBSTANCE USING SPARINGLY SOLUBLE SALT OF HETEROPOLYACID AND MEANS SUITABLE FOR SUCH DETERMINATION

摘要

A sparingly soluble salt of a heteropoly acid is used for the determination of an analyte which is an aromatic amine rich in electrons or together with another substance leads to such an amine. The analyte is determined by means of the heteropoly blue color formed.