Reviews In Analytical Chemistry, vol.3, no.22, pp.157-166, 2003 (Journal Indexed in SCI Expanded)
Simultaneous Determination of Rhodium and Gold
micro environment of reagents and analytes, and control the reactivity,
equilibrium and pathway of chemical or photochemical processes /5,6/.
In the present paper, the reactions of Au (III) and Rh (III) with p-DABR
in the presence of cationic [cetyltrimethylammonium bromide, CTAB]
surfactant have been studied. Simultaneous photometric determination of Au
(III) and Rh (III) is hampered due to spectral overlap of their complexes. In
such cases spectrophotometry coupled with derivative techniques is useful in
analysis of such mixtures Π-91. In this work derivative spectrophotometry
was also used to improve the sensitivity and selectivity /ΙΟ,II/. As the
proposed methods are practically free from interferences, they have been
applied to Rh (III) and Au (III) determination in synthetic samples.