Study of nitrate-phosphate solutions containing microelements

The article presents the results of a study of the thermal decomposition of copper and zincammonium phosphates; it is indicated that their decomposition when heated occurs through a series of intermediate compounds. It was found that in all cases, decomposition proceeds with the formation of an amorphous phase. The processes proceed with the release of gaseous ammonia and water in several stages. The final product of thermal decomposition are pyrophosphates of copper and zinc.