NF U42-421:2014 Fertilizers - Determination of trace elements - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)
This European standard specifies two methods for determining the soluble chromate content in fertilizers. Method A presents the determination of chromate after extraction with water by spectrophotometry. This method can be used to determine mass fractions of Cr(VI) greater than 1 mg/kg in solids. Method B presents the determination of chromate by alkaline digestion and ion chromatography with spectrophotometric detection. This method can be used to determine mass fractions of Cr(VI) greater than 0.1 mg/kg in solids.
NF U42-421:2014 Referenced Document
EN 12944-1 Dungemittel Und Calcium-/Magnesium-Bodenverbesserungsmittel - Worterbuch - Teil 1: Allgemeine Begriffe Fertilizers and Liming Materials and Soil Improvers - Vocabulary - Part 1: General Terms Engrais Et Amendements Calciques Et/Ou Magnesiens - Vocabulair
EN 12944-2 Dungemittel Und Calcium-/Magnesium-Bodenverbesserungsmittel - Worterbuch - Teil 2: Begriffe Fur Dungemittel Fertilizers and Liming Materials and Soil Improvers - Vocabulary - Part 2: Terms Relating to Fertilizers Engrais Et Amendements Calciques Et/Ou Ma
EN 1482-2 Fertilizers and liming materials - Sampling and sample preparation - Part 2: Sample preparation
EN 15192 Characterisation of waste and soil - Determination of Chromium(VI) in solid material by alkaline digestion and ion chromatography with spectrophotometric detection*， 2024-04-20 Update
EN ISO 3696 Water for Analytical Laboratory Use- Specification and Test Methods (ISO 3696 : 1987)
NF U42-421:2014 history
0000 NF U42-421:2016
2014NF U42-421:2014 Fertilizers - Determination of trace elements - Determination of chromium(VI) by photometry (method A) and by ion chromatography with spectrophotometric detection (method B)