Cryolite, natural and artificial, and aluminium fluoride for industrial use -- Determination of phosphorus content -- Atomic absorption spectrometric method after extraction
This International Standard specifies an atomic absorption spectrometric method, after extraction, for the determination of the phosphorus content of natura1 and artificial cryolite and of aluminium fluoride for industrial use. The method is applicable to products having phosphorus contents, expressed as P205, in the range 5 to 60 mg/kg.