ISO/DIS 622

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

General information

Current stage: 40.99 Effective date: 9 tet 2024

Originator: ISO

Owner: ISO/TC 27/SC 5

Type: International Standard

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.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 622:2016

NOW

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