Abstract
The Pd
2+
-thiourea complex formed in perchloric acid medium in the presence of NaCIO
4
., has been extracted quantitatively into tri-N-butyl phosphate (TBP) supported as a stationary phase on a column of Voltalef (polychloro-trifluoro ethylene). The complex was eluted with water and determined by atomic absorption spectrometry and polarography. Pd
2+
can be estimated in the presence of Ir
4+
and Au
3+
, but Pt
4+
interferes seriously.