ISO 622:2025

Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method

Publication date: 25 qer 2025

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Current stage: 60.60 Effective date: 25 qer 2025

Originator: ISO

Owner: ISO/TC 27/SC 5

Type: International Standard

ICS: 73.040 75.160.10

Gjuha: anglisht

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Statusi: Publikuar

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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.

ISO 622:2025

Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method

General information

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