Izvestiya of Saratov University.
ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


association

NEW METHOD OF APPROACH TO PROBLEMOF EXTRACTION OF THE LODINE FROM NATURALMINERAL SOURCES

New way, allowing extract the iodine from natural sources without their preliminary acidification, is described in the paper. The method is based on using the ion reactions and method of liquid-phases emulsion membrane extraction, with using quaternary ammonium compounds as extragent of iodide. Experimental data, gotten in the course of undertaking work, enable to application of the described technology to production.

Vegetation of the Bog Brekhovo (Ulyanovsk Region). Recommendations for Regime Security and Use

The Brechovo mire is a natural monument of the Ulyanovsk region, it is a stratigraphic standard of the Holocene period, the place where rare and medicinal plant species grow and has significant reserves of a valuable natural resource – peat. Currently, it is exposed to a number of anthropogenic factors, which causes concern for the safety of its natural complexes. The article is based on the description of trial plots (total 96 descriptions).