Lead, cadmium and mercury, topping all of the “black lists” of heavy metals due to their toxic effect on organisms in 1960–1970s, are tracers of technological environmental impact (Khristoforova, 1989).
Lead, cadmium and mercury, topping all of the “black lists” of heavy metals due to their toxic effect on organisms in1960–1970s, are tracers of technological environmental impact (Khristoforova, 1989).