ISO 11400:2021
Current
The latest, up-to-date edition.
Nickel, ferronickels and nickel alloys Determination of phosphorus content Phosphovanadomolybdate spectrophotometric method
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French, English
12-15-2021
This document specifies a spectrophotometric method for the determination of the phosphorus content in nickel, ferronickels and nickel alloys between 0,0005% (by mass) and 0,05% (by mass).
Arsenic, chromium, hafnium, niobium, silicon, tantalum, titanium and tungsten interfere, but the interferences can be avoided by complexation or volatilization (for chromium). The lowest phosphorus content [0,0005% (by mass)] can only be reached in samples with low contents of these interfering elements.
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