тяжелые металлы

Представлены результаты физико-химических свойств, анализа гидрохимического состава, анализа на содержание тяжелых металлов, гидрогеохимических показателей минерализованных пластовых вод, расположенных на территории юго-восточной части Республики Калмыкии (РК). Отмечено, что химический состав минерализованных пластовых вод резко изменяет состояние экосистем, приводит к деградации биоценозов и почвенного покрова.

Показано, что эндотоксемия развивается при всех патологичес-
ких состояниях, связанных с повышенным катаболизмом или
блокадой детоксикационных систем организма. Выявлено, что
2,6-дифенил-4-(п-метоксифенил)-4Н-селенопиран проявляет вы-
раженный антитоксический эффект при параллельном введении
с тяжелыми металлами, но не эффективен при хроническом от-
равлении.
 

In article influence of the Tengutinsky oil-extracting complex on chemical properties of soils of the reserve Black Earth is investigated. Negative action of an oil complex is studied. Features of accumulation of heavy metals in a soil profile are revealed. It is proved that oil pollution of the studied soils leads to change of physical and chemical properties of soils. Consistent patterns of distribution of heavy metals in brown semidesertic soils are determined.

The effect of heavy metal ions (Ni2+, Zn2+, Cu2+, Pb2+)  in concentrations of 10 ?M, 0.1 ?M and 1 mM on the rate of lipid peroxidation (LPO) has been studied in the 7-day-old seedlings of cucumber (Cucumis sativus L.) and radish (Raphanus sativus L.). It was revealed that Ni2+ and Cu2+ ions induced oxidative stress in plant cells, but Pb2+ and Zn2+ ions did not have toxic effects. The heavy metals effect on LPO increasing was as follows: Zn2+ < Pb2+< Ni2+ < Cu2+ for cucumber plants; Pb2+< Zn2+ < Cu2+ < Ni2+ for radish plants.

The adsorption properties of granular glauconite sorbents and their modified analogues against with respect to Fe2+, Mn2+, Cu2+, Cd2+ cations were studied and compared with natural untreated samples. The process was carried out in a static mode. The maximum adsorption of samples and the calculated adsorption equilibrium constants were determined. It was established that modified sorbents possessed the most activity adsorption against cations in pelleted samples. Modification was carried during sequential heat and acid-salt treatment.

Due to rising anthropogenic pressure, heavy metal pollution of the environment becomes the significant danger. This study is devoted to the investigation of Cu, Zn, Fe and Mn concentration in the oat and two types of soil, model polluted by metal sulfates. The method of atomic absorption spectroscopy was used. Cu concentration in mineral soil was much higher than Zn. When Cu and Zn were combined, also Fe and Mn, pairwise antagonism in mineral soil and in the oat was discovered. The oat accumulates Cu and Mn more actively than Zn and Fe.