Abstract
Small amounts of cations yielding insoluble dithiocarbamates are fixed on filter paper by precipitation with Na-DDTC. Other cations are removed by washing. On the Weisz-Ring oven, the metal-DDTC is moved to the ring by washing with pyridine without prior drying. Identification is carried out in the ring zone, if necessary after destruction of carbamate and removal of interfering cations. CuAl is given as example.
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