Удобрения. Экстрагирование фосфатов, растворимых в минеральных кислотах
Название (англ.):
Fertilizers; Extraction of phosphates soluble in mineral acids
Описание (англ.):
Specifies two equivalent methodes. They consist in dissolving the wanted substance in a mixture of hydrochloric and nitric acids or in a mixture of sulfuric and nitric acids.