NF A20-402

Iron ores. Determination of phosphorus content. Molybdenum blue spectrophotometric method.

La présente norme a pour objet la description d'une méthode de dosage du phosphore par spectrophotométrie au bleu de molybdène dans les minerais de fer, applicable à un domaine de teneurs compris entre 0,005 % et 0,2 %. En ce qui concerne le dosage spectrophotométrique du phosphore pour les teneurs en phosphore comprises entre 0,2 % et 1,2 % : se référer à la norme NF A 20-401.

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