In order to precisely determine trace amounts of carbon (below about 5 mg/g) and oxygen (below about 5 mg/g) in a high-purity iron, it is necessary to remove carbon and oxygen adsorbed and combined on the surface of the iron as contamination, and to lower the experimental blank value. When the surfa
Spectrophotometric determination of trace amounts of selenium in iron and steel with 4-methyl-o-phenylenediamine
β Scribed by Takuji Kawashima; Akira Ueno
- Publisher
- Elsevier Science
- Year
- 1972
- Tongue
- English
- Weight
- 407 KB
- Volume
- 58
- Category
- Article
- ISSN
- 0003-2670
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π SIMILAR VOLUMES
Analytical methods were investigated to improve the sensitivity of detecting trace amounts of Si and P in high-purity iron and steels. Silicon and P in the solutions were converted to SiMo 12 O 40 4Γ and P 2 Mo 18 O 62 6Γ , respectively, and adsorbed on a dextran gel column (Sephadex 1 G25 medium).
Trace amounts of selenium and tellurium in high-purity iron were quantitatively separated by a reductive coprecipitation technique with palladium, and determined by electrothermal atomic absorption spectrometry. When ascorbic acid was used as reductant, selenium and tellurium could be simultaneously