In may I continued spectrophotometric and voltamperometric studies of citrate bath with various concentrqtions of zinc sulpate ant sodium molybdate. I also lead the electrodeposition procesess in potentiostatic and coulostatic conditions on the steel and copper surfaces, from stable homogeneous and Zn(II)-Mo(VI) citrate baths, in the slightly acid range (pH about 5), with different concentration of metals and citrate ions.

From 14th to 25th May I participate in course “Electrocemical Impedance Spectroscopy and its applications” at Faculty of Chemistry of University of Warsaw.
Outline
1. AC response of Electrical Circuits, Laplace and Fourier transform
2. Impedance of Electrical Circuits and impedance graphs
3. Impedance measurements
4. Impedance of faradaic reactions in the presence of diffusion
5. Impedance of a faradaic reaction involving adsorption of reacting species
6. Dispersion of impedances on solid electrodes
7. Impedance of porous electrodes
8. Conditions for "good" impedances, stability, Kramers-Kronig Transforms
9. Modeling of experimental data
10. Selected applications
11. Exercises using computers

Course was given by prof. A. Lasia from Sherbrooke University (Canada).