COMPARATIVE LEAD-BINDING ACTIVITY OF PECTINS WITH DIFFERENT MOLECULAR MASS IN VITRO
The paper describes kinetics of binding of lead ions with low-etherized pectins with different molecular masses determined by means of acid hydrolysis. The authors have determined indices of maximum metal-binding activity of the pectin specimen under study with the environmental pH range of 2 to 6. The Langmuir adsorption model was used to describe adsorption isotherms and calculate adsorption parameters. As reported, as the molecular mass of pectins reduces, the maximum adsorption capacity reliably increases and the affinity of pectin to lead ions decreases.