Determination of traces of thallium in zinc and cadmium metals and process solutions by atomic-absorption spectrophotometry after extraction with di-isopropyl ether and reductive stripping.
The bromo-complex of thallium(III) is extracted into di-isopropyl ether and reductively stripped into sodium sulphite solution, which is then analysed for thallium by atomic-absorption spectrophotometry. Thallium in zinc and cadmium metals and process solutions can be determined by this method.
Murti
S S
SS
Process Laboratory, Hindustan Zinc Limited, Visakhapatnam-530 015, A.P., India.
Rao
I V
IV
Rajan
S C
SC
Subrahmanyam
J
J