Cerium binding activity of pectins isolated from the seagrasses Zostera marina and Phyllospadix iwatensis

Cerium binding activity of three different water soluble pectin compounds of different origin was studied in a batch sorption system. The Langmuir, Freundlich and BET sorption models were adopted to describe the binding reactions between metal ions and pectin molecules. The Langmuir model provided the best fit. Within the pH range from 4.0 to 6.0, the largest amount of the cerium ions was bound by pectin isolated from the seagrass Phylospadix iwatensis in comparison to pectin extracted from the seagrass Zostera marina and pectin obtained from citrus peel (commercial grade). The Langmuir constants were also highest for the pectin samples isolated from the seagrass P. iwatensis. The results obtained from this study suggest that pectin is a prospective source for the development of radioisotope-removing pharmaceuticals.     

Pavel Vladimirovich Ototsky (1866–1954): Pedologist and Organizer of Soil Science Research

Eurasian Soil Science - Pavel Vladimirovich Ototsky was the founder and first editor of the Pochvovedenie journal. The article presents his biography and activity in science and organization of...     

Formation of the productivity of a legume-grass mixture under conditions of agrolandscapes in the central region of the non-Chernozem Zone of the Russian federation

The landscape approach to developing perennial grass cultivation practices made it possible to reveal ecologically homogeneous sections and to create the basis for organizing sustainable fodder production under the complex landscape conditions of the region. The adaptation characteristics of perennial grasses and their productivity are different in agromicrolandscapes characterized by the same geochemical association of relief features but on different hill slopes (southern and northern).     

Monitoring data on ameliorative status of agrolandscape

Long-term monitoring data on the ameliorative status of soils in the agrolandscape of a terminal moraine ridge are given. The effect of agroclimatic factors and specific features of the agrolandscape of the experimental station on groundwater level and moisture content in soil horizons are shown. The differentiation of agroameliorative measures for optimizing water–physical soil properties in different parts of the agrolandscape is substantiated.