Sorption ability of humic substances from different origin peats of the Tula region in relation to Pb(II)
Abstract
Sorption capacities of humic substances (HS) extracted from the peats of different origin were studied.
These capacities were determined towards Рb(II). Sorption rate constants were calculated for whole
samples of HS (0.01 s−1) and separately, for low molecular weight fractions of HS (0.07 s−1). Limiting sorption
on the HS fractions was not observed that was due to their enrichment and availability of basic functional
groups responsible for binding of lead cations.
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