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This Document Has Been Superseded
A newer publication replaces it: BSI BS ISO 11400
Sampling and analysis of nickel, ferronickel and nickel alloys -- Method for the determination of phosphorus in nickel, ferronickel and nickel alloys by phosphovanadomolybdate molecular absorption spectrometry
This International Standard specifies a molecular absorption spectrometric method for the determination of the phosphorus content in nickel, ferronickel and nickel base alloys in the range of 0,000 5 % (m/m) to 0,05 % (m/m).
Arsenic, chromium, hafnium, niobium, silicon, tantalum, titanium and tungsten interfere, but the interferences can be avoided by complexation or volatilisation (for Cr).
The lowest phosphorus content [0,000 5 % (m/m)] can only be reached in samples with low contents of the interfering elements.
Describes a method in the range 0.0005% (m/m) to 0.05% (m/m).
The effects of interfering elements are avoided by complexation or volatilization.
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