ISO 622:2025
ISO 622:2025
86989
CHF
67
Résumé
This document specifies a reduced molybdophosphate photometric method for the determination of the total phosphorus mass fraction of hard coal, lignites and coke. Two methods for taking the phosphorus into solution are specified, namely extraction from the coal or coke ash with acid or by repeated oxidation of the coal or coke, by acid, to remove carbonaceous matter.
Informations générales
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État actuel: PubliéeDate de publication: 2025-06Stade: Norme internationale publiée [60.60]
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Edition: 3
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Comité technique :ISO/TC 27/SC 5
- RSS mises à jour
Cycle de vie
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Précédemment
AnnuléeISO 622:2016
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Actuellement