SPECTROPHOTOMETRIC DETERMINATION OF COBALT BY EXTRACTION OF BENZYLTRIBUTYLAMMONIUM TETRATHIOCYANATOCOBALTATE(II)

Authors
BARAKAT SA RUSAN M BURNS DT
Citation
Sa. Barakat et al., SPECTROPHOTOMETRIC DETERMINATION OF COBALT BY EXTRACTION OF BENZYLTRIBUTYLAMMONIUM TETRATHIOCYANATOCOBALTATE(II), Analytica chimica acta, 355(2-3), 1997, pp. 163-166
Citations number
18
Journal title
Analytica chimica acta → ACNP
ISSN journal
00032670
Volume
355
Issue
2-3
Year of publication
1997
Pages
163 - 166
Database
ISI
SICI code
0003-2670(1997)355:2-3<163:SDOCBE>2.0.ZU;2-N
Abstract
Cobalt (0-120 mu g) can be determined spectrophotometric ally at 625 n m after its extraction as benzyltributyl ammonium tetrathiocyanatocoba ltate(II) into chloroform at pH 7. The effects of pH, diverse ions and masking studies are reported. The method has been applied to the dete rmination of cobalt (0.2-10.0%, w/w) in high speed tool steels without prior separation of iron, and in vitamin B12. (C) 1997 Elsevier Scien ce B.V.