Pd analysis

[gcguy]

I am currently looking at Pd analysis. Unfortunately we do not have any of the traditional means for analysis but I have found a reference to HPLC analysis of Pd via a derivitisation.

I was wondering if anyone has done anything similar, if so, does it work and give good quant results?

I am trying to get a feel for what this analysis is like before I plan in any time for it.

GCguy

[hookeslaw]

hi, i have tested strontium and iron via EDTA chelating using a conductivity detector. ( mobile phase excess of EDTA in acid column from dionex) Failing that i would suspect that you are looking for a chromophoric ligand that is predictable. i recall from my past using barbituric acid, and nicotinic acid for such a purpose again in acidic media.

hope this helps

[Mark Tracy]

Dimethylglyoxime (and its analogs) form brightly colored, organic-soluble, water-insoluble complexes with nickel, palladium and platinum. They should be stable enough for HPLC analysis.

[zokitano]

Do you use UV/Vis spectrophotometer?
Because it is simple to determine Pd using spectrophotometric method, measuring the absorbance of palladium tetra-iodo complex - [PdI4]2-.

If you have the palladium in form of its salt (eg. PdCl2) you can dissolve it in water and add KI (potassium iodide) in excess. Formed complex [PdI4]2- then can be spectrophotometricaly determined.

If you have elemental Pd, than you could transform it into PdCl2 by adding sufficient amount of Aqua regis (royal water). Then add KI to form the Pd complex stated above.

Best regards