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

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Standards Norway SN-CEN/TS Series

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Active

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Electronic (PDF)

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10 minutes

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ADOPTED_FROM:CEN/TS 16318:2012

This Technical Specification specifies two methods for the determination of the content of soluble chromate in fertilisers. 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 oxidising fertiliser matrix, no valid Cr(VI) content can be reported.

Number of Pages :	20
Published :	04/18/2012

SN-CEN/TS 16318:2012 PDF

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

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