CORROSION OF IRON, TIN AND ALUMINUM IN FRUIT JUICES

The corrosion behaviour of iron, tin and aluminium, in different fruit juices (apple, cherry, lemon, orange, grapefruit, pineapple and marac uja) was investigated. Potentiostatic polarization and Tafel extrapola tion methods were used to determine corrosion parameters. Weight loss method was used in order to determine the corrosion rate. Tin, iron an d aluminium contents in fruit juices after exposure of samples for jui ce action were determined by atomic absorption spectrophotometry. For comparison with literature data, the same metals well also analyzed in canned fruit juices after 12 and 18 months of storage. The results ob tained gave an insight into the aggressiveness of certain fruit juices , which depends not only on the composition but also on the storage co nditions.