Effect of heavy metals on chemical body structure of bivalves

The results of the research on the effect of heavy metals on bivalves of Unio kind are presented. It has been determined that the amount of metals in the bodies of shells depends on the concentration and the duration of their impact. Antagonistic influence of cadmium on the accumulation of lead has been defined. There has been also revealed the effect of pollutants on the quantity of protein in the shell bodies. The presence of nitrogen that can be titrated by formol is considerably increasing depending on the kind of pollutant or their joint effect.