Selective determination of cobalt in steels, alloys, and minerals by spectrophotometric titration

Journal Article · Sat Feb 01 04:00:00 EST 1986 · Ind. Lab. (Engl. Transl.); (United States)

OSTI ID:5574559

Kuznetsov, V V; Korchagina, O A

This paper addresses the problem of determining cobalt in steels, alloys, and minerals. Spectrophotometric titration was performed on a SF-16 spectrophotometer in a cell with a layer thickness of 30 mm. The method used was based on the formation of outer cobalt (III) nitrite complex anions with barium ions. The curves obtained in the titration of the anionic complexes of cobalt are shown and the range of cobalt determination is 3-1200 ..mu..g/15 ml. 1000-fold excesses of iron and nickel do not interfere in the determination; in most other methods such an excess makes the determination of cobalt difficult. The method presented is selective, sensitive and rapid for the determination of cobalt in steels, alloys and minerals.

• Research Organization: D.I. Mendeleev Moscow Institute of Chemical Technology
• OSTI ID: 5574559
• Journal Information: Ind. Lab. (Engl. Transl.); (United States), Journal Name: Ind. Lab. (Engl. Transl.); (United States) Vol. 51:8; ISSN INDLA
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360102* -- Metals & Alloys-- Structure & Phase Studies
ALKALINE EARTH METAL COMPOUNDS
ALLOYS
BARIUM COMPOUNDS
CHEMICAL ANALYSIS
COBALT
COBALT COMPLEXES
COMPLEXES
COMPLEXOMETRY
EFFICIENCY
ELEMENTS
IRON ALLOYS
IRON BASE ALLOYS
METALS
MINERALS
NICKEL ALLOYS
NICKEL BASE ALLOYS
NITRITES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
QUANTITATIVE CHEMICAL ANALYSIS
QUANTITY RATIO
SENSITIVITY
SPECTROPHOTOMETRY
TITRATION
TRANSITION ELEMENT COMPLEXES
TRANSITION ELEMENTS
TUNGSTEN ALLOYS
TUNGSTEN BASE ALLOYS