ISO/DIS 622

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

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.

OEN:

ISO

Langue:

English

Code(s) de l'ICS:

73.040; 75.160.10

Statut:

Brouillon

Date de Publication:

1969-12-30

Numéro Standard:

ISO/DIS 622