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Photometric determination of cobalt with nitroso-R-salt

✍ Scribed by G. Wünsch

Book ID
118993060
Publisher
Elsevier Science
Year
1979
Tongue
English
Weight
292 KB
Volume
26
Category
Article
ISSN
0039-9140

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✦ Synopsis

The chelate is quantitatively formed only in the pH range 6.5-7.5. Despite the large stability constant, a large excess of reagent is required to suppress interferences. The most suitable wavelength for the photometric measurement is 500 nm, where the molar absorptivity is 1.607 x 10(4) 1.mole(-1). cm(-1). The procedure given allows determination of 8 x 10(-4)% Co in a l-g sample. The standard deviation for cobalt is 2.1 mug/100 ml (f = 19). Applications to analysis of iron and steel, nickel, copper, ores and silicates are given.

📜 SIMILAR VOLUMES

The rapid photometric determination of c
The rapid photometric determination of cobalt in steels using Nitroso-R-Salt
✍ Haywood, F. W. ;Wood, A. A. R. 📂 Article 📅 1943 🏛 Wiley (John Wiley & Sons) ⚖ 386 KB

The use of nitroso-R-salt ns n specific rcngcnt for tho determination of cobnlt in steels is dcscrihed. Full development of tho cdourd cobnlt complex is obtained whcn nll minernl wid iona am ncutralieed by mcane of sodium acctntc. Other interfering elcmcnts ocauning in stfels. whilo producing wmphxe