хром

Accumulation of heavy metals and arsenic with medicinal herbal raw material of common shovel harvested in Voronezh region

The Voronezh region is traditionally the most important area of crop production and agriculture. The purpose of the research was to study the contamination with heavy metals of medicinal plant raw materials of the Voronezh region using the example of the roots of ordinary burdock, prepared in urbo- and agro-ecosystems, which have various anthropogenic effects on themselves. The accumulation of heavy metals (lead, mercury, cadmium, nickel, copper, zinc, cobalt, chromium) and arsenic in 51 samples of raw materials was studied.

Accumulation of Heavy Metals and Arsenic by Medicinal Plant Raw Material of Bitter Hollow

Authors: Dyakova N. A.

The Voronezh region is traditionally the most important area of crop production and farming. The purpose of the study was to study the contamination by heavy metals of medicinal vegetable raw materials of the Voronezh region using the example of grass of the bitter emery collected in urban and agro-ecological systems, which experience various anthropogenic effects. The accumulations of heavy metals (lead, mercury, cadmium, nickel, copper, zinc, cobalt, chromium) and arsenic were studied, in 51 samples of pooch grass bitter.

Thermodynamic Analysis of Transformation Isomerization Reaction of n-Hexane on Zeolite Systems ZSM-5, Cr-Bi-ZSM-5

Authors: Aniskova Т. V., Kuzmina R. I., Федотов Э. А.

A comparative analysis of dependencies isomerization reaction, and the formation reaction of isobutane, isopentane in the temperature range from 573 to 673 K at the high-silicon ZSM-5 system and the same system modified with oxides of bismuth, and chromium.