Author(s)

E. Kamilova & G. Rakhmatkariev

Abstract

The main goal of this research was the creation of scientifically based recommendations for predicting the level of damage for the surrounding ecosystems by the aluminum plants and for taking adequate measures to protect the Great Silk Road. With the purpose of study of Fluorine as possible reason of silkworms destruction in a zone of emission of Fluorine pollution of an Aluminum plant the investigations have been conducted by the evaluation of fluoride accumulation in the ecosystem components (soils, Mulberry's leaf, Mulberry's stick, apricot-tree's leaf, apricot-tree's stick, caterpillars of silkworm and excrements of silkworm) by the distance limit from the objects by the wind rose. Concentrations of fluoride were detected by method of alizarinechelatometry photometry. The accumulation of fluoride more than 25 % in comparison with the standard chestnut soil and more than 45 % with chernozemic soil respectively in soils nearby Aluminum plant has been observed. The increase by more than 25 times of fluoride content in silkworm's excrements from a zone undergone to harmful action of emissions of an aluminum faclory has been discovered. Whereas authentic increase of the fluoride contentslih Mulberry's leaves was not revealed, and in body of silkworm's caterpillars was lower than a limit of detection by this method. Hence, the control of pollution of fluoride in a zone of emission can be done by analysis of soil samples and excrements of silkworms, instead that of Mulberry's leaves and body of silkworm's caterpillars.

Keywords