soil

To the Question of the Suitability of Soils Territory the Educational Centre «Botanical Garden» of Saratov State University for Growing Hybrid Gladiolus

The hybrid gladiolus occupies one of the leading places among the huge number of perennial plants thanks to its decorative qualities and the timing of flowering. In order to select a site for the cultivation of gladiolus it is necessary to consider its requirements for agrochemical soil condition. The analysis was made of the soil territory the Educational Centre «Botanical Garden» of Saratov State University, which is used for the cultivation of corms gladioli. Necessary measure agrochemicals have been considered, in order to successfully cultivate gladioli in a botanical garden.

Properties, Soil Degradation and Fitotoxicity of Starch Composites with Polyvinyl Alcohol

Authors: Malinkina О. N., Shipovskaya A. B., Grebenyuk L. V., Stepanov M. Y., Papkina V. Y.

Composite films were obtained from a mixture of starch, polyvinyl alcohol, and a plasticizing additive based on aspartic acid. The surface morphology, structural features of the composites, and their behavior in a polythermic mode were studied by scanning electron microscopy, X-ray diffractometry, IR spectroscopy, differential thermal and thermogravimetric analysis. Only carbon dioxide was detected in the gaseous products of thermal decomposition of the samples. The sorption and physico-mechanical properties of our composite films were analyzed.

Determination of the Contents of Arsenic, Mercury, Copper, Nickel and Zinc in the Soil and Ventilating Emissions by Method of Atomic Absorption Spectrometry (AAS)

Authors: Lobachev А. L.

The method of atomic absorbing spectrometry (AAS) determined the content of mobile forms of copper, nickel and zinc, and total content of mercury and arsenic in the soil samples selected in a residential zone Samara, and copper in the ventilating emissions. For soils the sample preparation stage contribution to the general error of analytical definition is estimated. For ensuring correctness definition of the content of copper in the ventilating emissions the correction coefficient considering existence of a systematic mistake is calculated.

Determination of the Contents of Arsenic, Mercury, Copper, Nickel and Zinc in the Soil and Ventilating Emissions by Method of Atomic Absorption Spectrometry (AAS)

Authors: Demakhin A. G., Akchurin S. V.

The method of atomic absorbing spectrometry (AAS) determined the content of mobile forms of copper, nickel and zinc, and total content of mercury and arsenic in the soil samples selected in a residential zone Samara, and copper in the ventilating emissions. For soils the sample preparation stage contribution to the general error of analytical definition is estimated. For ensuring correctness definition of the content of copper in the ventilating emissions the correction coefficient cons idering existence of a systematic mistake is calculated.