BIOSORBENTS BASED ON PINE SAWDUST AND MALT SPROUTS FOR PRECONCENTRATION AND ICP-OES DETERMINATION OF NONFERROUS, HEAVY, AND PRECIOUS METALS IN THE ENVIRONMENTAL SAMPLES Статья Losev V.N., Buyko O.V., Borodina E.V., Samoilo A.S., Zhyzhaev A.M., Velichko B.A. Separation Science and Technology (Philadelphia). Taylor and Francis Inc.. Том 53. 2018. С. 1654-1665