Photometric determination of cadmium
Photometric determination with dithizone.
At a pH > 6 cadmium ions react with dithizone to form primary cadmium dithizonate, which is stable in strongly alkaline medium and dissolves in carbon tetrachloride (tetrachloromethane) highly sensitive with pinkcolour.
Data and ordering information
REF 918 131
Type standard test 1-13
Range 10 mm cuvette: 0.02 – 0.50 mg/L Cd2+
50 mm cuvette: 0.002 – 0.200 mg/L Cd2+
Sufficient for 25 determinations
Shelf life at least 1.5 years
Sea water suitability no