Application I: determination of chromium(VI) in mineral and drinking water:
Metrohm has developed a highly sensitive ion chromatography method (AN-U-057) for the detection of Cr(VI), with a limit of determination of less than 0.02 µg/L Cr(VI). The application is also in compliance with the limit value required according to EPA Standard 218.7.
Application II: Cr(VI) in toys – determination by ion chromatography:
Metrohm has developed an ion chromatography method for this application (AN-U-068) that uses preconcentration and Inline Matrix Elimination. A portion of the migration solution produced in accordance with the regulation DIN EN 71-3:2014-12 is placed on a preconcentration column, where a rinsing solution is used to elute the matrix from the column. In the second step, chromatographic separation takes place on an anion exchanger. Detection is accomplished using a very specific post-column derivatization in combination with UV/VIS detection.
Application III: Cr(VI) in leather – determination by ion chromatography and Inline Dialysis:
Metrohm has developed an ion chromatography method for this application (AN-U-053) using
Inline Dialysis for automatic sample preparation and UV/VIS detection following post-column reaction. Before injection of the sample on the separation column, the high-molecular compounds of the sample matrix are separated from Cr(VI) with Inline Dialysis. In the second step, chromatographic separation takes place on an anion exchanger. Detection is accomplished using a very specific post-column derivatization in combination with UV/VIS detection.