EN
L-ascorbic acid (H2Asc) is one of the basic vitamins, necessary to the normal growth and behaviour of organisms. The primary goal of this review is to present the chemical characteristics of this substance and to discussed its relation to various biological functions of vitamin C, mainly as a free radical scavenger. In presented work author analysed of same metals Cu(II), Zn(II), Cd(II), Hg(II), Pb(II), with L-ascorbic acid, showing preventive activity of vitamin C at exposure on metals.