ISO 622:2016Withdrawn

Solid mineral fuels — Determination of phosphorus content — Reduced molybdophosphate photometric method

Combustibles minéraux solides — Dosage du phosphore — Méthode photométrique au molybdophosphate réduit

This edition has been replaced by ISO 622:2025.

Abstract / 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

Replaces

ISO 622:1981WithdrawnSolid mineral fuels — Determination of phorphorus content — Reduced molybdophosphate photometric methodInternational Standard · Published 1 Aug 1981 · ISO/TC 27/SC 5

Replaced by

ISO 622:2025PublishedCoal and coke — Determination of phosphorus — Reduced molybdophosphate photometric methodInternational Standard · Published 25 Jun 2025 · ISO/TC 27/SC 5