Abdrakhmanova, M. S.; Traisov, B. B.
(Youth sciense-looking for the future: мaterials of the international scientific and practical conference, dedicated to the 30th anniversary of the independence of the Republic of Kazakhstan (21 мая 2021 г.)., 2021-05-21)
Many heavy metals are involved in biological processes and in certain quantities are essential for the functioning of plants, animals, and humans as trace elements. But in excessive doses it may cause serious health effects. ...