抄録
Reversed phase and normal phase LC-separation of all noble-metal-8-hydroxyquinolinates (oxinates) have been made. The chelates were derivatized using a pre-column technique with an under-water-melt procedure. With detection at 254 nm less than 5 ng and less than 20 ng in the VIS-range at 396 or 435 nm of each metal can be detected. For Ru-, Ir-, Rh-oxinates it is preferable to use a NP-Si 60 7μm analytical column eluted with CHCl3:THF = 3:2, and for Pd-, Ru-, Os-oxinates a RP-C18 5-20 μm analytical column, with MeOH: Buffer (pH4.6) : CHCl3 = 57.5 : 30 : 12.5 vol.% and 2.5×10-4M oxine in the eluent. The elution order in NPLC is inverted for Rh- and Os-oxinate from that observed in RPLC.
