SSH EN 16318:2013

Plehra kimike - Përcaktimi i gjurmëve të elementëve - Përcaktimi i kromit (VI) nga metoda fotometrike (metoda A) dhe nga metoda e kromatografisë jonike (metoda B) me diktimin e spektrofotometrisë

Fertilizers - Determination of trace elements - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)

Scope

This European Standard specifies two methods for the determination of the content of soluble chromate in fertilizers.
Method A specifies the determination of chromate after extraction with water by photometry. This method can be used to determine Cr(VI)-mass fractions in solids higher than 1 mg/kg.
Method B specifies the determination of chromate by alkaline digestion and ion chromatography with spectrophotometric detection. This method can be used to determine Cr(VI)-mass fractions in solids higher than 0,1 mg/kg.
NOTE In case of reducing or oxidizing fertilizer matrix, no valid Cr(VI) content can be reported.

Related directives

Directives related to this standards.