STN 722041-15 (722041)

Chemical analysis of steel-making slag. Determination of phosphorus pentoxide content

STANDARD published on 1.8.1992

The information about the standard:

Designation standards: STN 722041-15
Classification mark: 722041
Catalog number: 68320
Publication date standards: 1.8.1992
The number of pages: 4
Approximate weight : 12 g (0.03 lbs)
Country: Slovak technical standard
Category: Technical standards STN

Annotation of standard text STN 722041-15 (722041):

Tato norma urcuje spektrofotometricke stanoveni oxidu fosforecneho ve forme redukovaneho fosforecnano-molybdenanoveho komplexu. Stanoveni je zalozeno na mereni intenzity modreho zbarveni, ziskaneho redukci fosforecnano-molybdenoveho komplexu kyselinou askorbovou v pritomnosti antimonite soli. Pripadny rusivy vliv arsenu se odstrani jeho oddelenim ve forme bromidu odparenim roztoku s kyselinou bromovodikovou a chloristou.