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ISO/DIS 622

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

General information

40.99     Oct 9, 2024

ISO

ISO/TC 27/SC 5

International Standard

73.040     75.160.10  

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Scope

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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PREVIOUSLY

Revises
ISO 622:2016

NOW

IN_DEVELOPMENT
ISO/DIS 622
40.99 Full report circulated: DIS approved for registration as FDIS
Oct 9, 2024

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