Detection of Bismuth by Means PHILIP W. WEST
AND
OF
Brucine Citrate
JOSEPH V. TOKOS
Coates Chemical Laboratories, Louisiana State University, Baton Rouge, La.
A
many instances the ions concerned are present as complexes, but SURVEY of the literature on methods for the detection of where the structure of surh complexes may be in doubt, only the bismuth disclosed several tests that indicated promise valence of the central atom is indicated. either in their present form or with slight modifications. One of the most satisfactory reagents for bismuth is thiourea, which has been considered by a number of invest,igators (1, 4, 5, 12). This ~ i +ya-+ K + cu++Rb+ A ~ + cs+, , A ~ + + + Be.++, , big++, Ca++,' in+;, S;++, Cd++, $a++, Hg+, H g + + , BOZ-, & 0 7 - - , reagent provides a highly selective test for bismuth, but is seriAI+++, Sc+++, Ga+++, E-+++, I n f f i , Ce'+i, T1+, ously handicapped by its lack of sensitivity. The use of various CO,-- Sios-- Ti+++Z r + + + + Sn++ S n + + + + Pb++, , Th++++ organic bases in conjunction with potassium iodide has been NHl+ hot-,
