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Context. Open clusters are ideal test particles to study the chemicalevolution of the Galactic disc. However the existing high-resolution abundancedeterminations, not only of [Fe/H], but also of other key elements, is largelyinsufficient at the moment. Aims. To increase the number of Galactic openclusters with high quality abundance determinations, and to gather all theliterature determinations published so far. Methods. Using high-resolution(R~30000), high-quality (S/N$>60 per pixel), we obtained spectra for twelvestars in four open clusters with the fiber spectrograph FOCES, at the 2.2 CalarAlto Telescope in Spain. We use the classical equivalent widths analysis toobtain accurate abundances of sixteen elements: Al, Ba, Ca, Co, Cr, Fe, La, Mg,Na, Nd, Ni, Sc, Si, Ti, V, Y. Oxygen abundances have been derived throughspectral synthesis of the 6300 A forbidden line. Results. We provide the firstdetermination of abundance ratios other than Fe for NGC 752 giants, and ratiosin agreement with the literature for the Hyades, Praesepe and Be 32. We use acompilation of literature data to study Galactic trends of [Fe/H] and[alpha/Fe] with Galactocentric radius, age, and height above the Galacticplane. We find no significant trends, but some indication for a flattening of[Fe/H] at large Rgc, and for younger ages in the inner disc. We also found apossible decrease of [Fe/H] with |z| in the outer disc, and a weak increase of[alpha/Fe] with Rgc.

Chemical abundance analysis of the Open Clusters Berkeley 32, NGC 752, Hyades and Praesepe