Heavy metals as toxicants in big cities

As regards urban atmosphere, motor vehicles (Pb) and industry (V, Ni, Cr, Cd) exert the greatest influence; water, soil, vegetation also experience menace caused by HMs. Urban environments should be protected against contamination posed by HMs: the health status of big cities is dependent on adequate and safe supply of water. Vegetation plays a helpful role in reducing HM content in the atmosphere and the soil. Awareness of the inhabitants regarding the risks posed by HMs also counts as critical factor today. Ecoeducation at the beginning of the new century can be taken into consideration.