title: Gravimetric determination of selenium from perchloric acid solution with hydrazine.
abstract: The gravimetric determination of selenium, by reduction of selenious acid in perchloric acid solution with hydrazine hydrate, has been studied in detail. Elemental selenium is completely precipitated in 3.2-5.1M perchloric acid at room temperature or 100 degrees C. One mole of selenious acid reacts with one mole of hydrazine hydrate to give elemental selenium.
authors.affiliation: National Institute for Researches in Inorganic Materials, Kurakake, Sakura-mura, Niihari-gun, Ibaraki, 300-31, Japan.
authors.forename: S
authors.initials: S
authors.lastname: Ooba
authors.forename: S
authors.initials: S
authors.lastname: Uneo