Coal and coke — Determination of phosphorus — Reduced molybdophosphate photometric method
NORMA vydána dne 25.6.2025
Designation standards: ISO 622:2025-ed.3.0
Publication date standards: 25.6.2025
The number of pages: 7
Approximate weight : 21 g (0.05 lbs)
Country: International technical standard
Kategorie: Technické normy ISO
Description / Abstract: 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.