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Can I read Urea for industrial use — Determination of biuret content — Flame atomic absorption and photometric absorption methods [Withdrawn without replacement] on EtoBox?
Urea for industrial use — Determination of biuret content — Flame atomic absorption and photometric absorption methods [Withdrawn without replacement] by ISO/TC 47 Chemistry is a reference work available to read on EtoBox.
What is Urea for industrial use — Determination of biuret content — Flame atomic absorption and photometric absorption methods [Withdrawn without replacement] about?
Applicable to products having contents of equal to or more than 0.05 % (m/m) (with flame atomic absorption) or 0.1 % (m/m) (with fotometric absorption). Covers the formation of a complex between biuret and copper(II) sulphate in alkaline medium. Fixation of this complex on an anion exchange resin. Elution of Cu first with a potassium nitrate solution and then with a nitric acid solution. Flame atomic absorption: aspiration of the solution into an acetylene-air flame and measurement of the absorption of the 325-nm line emitted by a copper hollow-cathode lamp; or by photometric absorption: formation of a coloured complex between Cu and zinc dibenzyldithiocarbamate, extraction with carbon tetrachloride and measurement at a wavelength of about 435 nm. Has also been approved by the IUPAC.
Who reads Urea for industrial use — Determination of biuret content — Flame atomic absorption and photometric absorption methods [Withdrawn without replacement]?
It is typically read by working professionals who need an authoritative practice reference.
Common subject areas: medicine, law, business, engineering.
- Author
- ISO/TC 47 Chemistry
- Publisher
- ISO
- Published
- 1977
- Language
- EN
- Category
- reference
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