Under publication
ISO 622
Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method
Reference number
ISO 622
Edition 3
© ISO 2025
Under publication
Under publication
Final production steps (up to seven weeks).
Will replace ISO 622:2016

Abstract

ISO 622:2016 specifies a reduced molybdophosphate photometric method for the determination of the total phosphorus content 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.

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