Siundiukova, K.V., Dmitrieva, E.D., Goryacheva, A.A. and Muzafarov, E.N. 2019. Sorption ability of humic substances from different origin peats of the Tula region in relation to Pb(II). Sorbtsionnye i Khromatograficheskie Protsessy. 16, 6 (Nov. 2019).