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Extraction with long-chain amines—V: Colorimetric determination of cobalt with nitroso-R salt

✍ Scribed by Jiří Adam; Rudolf Přibil

Book ID
118069406
Publisher
Elsevier Science
Year
1971
Tongue
English
Weight
410 KB
Volume
18
Category
Article
ISSN
0039-9140

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Photometric determination of cobalt with
Photometric determination of cobalt with nitroso-R-salt
✍ G. Wünsch 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 292 KB

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).