Mineralogical and geochemical characteristics of drinking water salt deposits

The article presents the research results on the features of element and mineral composition of salt deposits (limescale) formed in household conditions in heat exchanging equipment. The major part of limescale is represented by two species of calcium carbonate - calcite and aragonite. We have shown that high concentrations of chemical elements in the limescale promote the formation of their own mineral forms (sulphates, silicates, native forms) in salt deposits. Detecting such mineral formations suggests the salt deposits of drinking water to be a long-term storage media which can be used in the course of eco-geochemical and metallogenic studies

Radiographic researches in radioecological monitoring

The possibilities of one of the radiographic methods - the method of fission-fragment radiography for evaluation of radiographic condition of territories, which are characterized by different source of man-caused and natural radiating loading, are considere

The Nature of High Soil Radioactivity in Chinese Province Guangdong

Soil is a basic component of biosphere and its important natural resource. The article deals with the analysis of soil radioactivity in Chinese province Guangdong. In the course of the analysis, it was stated that highly radioactive soil of China had been formed due to deep chemical weathering of highly radioactive potassium granites. High uranium and thorium contents in them are caused by specific conditions of weathering crust formation and subsequent pedogenesis. High dose loads for a man are formed in the development fields of such rock types

Model testing of radioactive contamination Cs-137 of soils and bottom sediments in the Romachka river (Tomsk region, Russia)

This paper presents results of testing models for the radioactive contamination of river water and bottom sediments by 137Cs. The scenario for the model testing is based on data from the Romashka River, which was contaminated as a result of accidents at the Siberian Chemical Combine (Russia, Region of Tomsk). The input data include the following: estimates of inventories of 137Cs in the floodplain of the downstream part of Romashka River; the estimated annual runoff of 137Cs from the downstream part of Romachka River; data on the precipitation, hydrological and hydrochemical characteristics of the river. The endpoints of the scenario are model predictions of the activity concentrations of 137Cs in water and bottom sediments along the Romachka River in 2012-2013. Calculations for the Romashka scenario were performed by the Institute of radioprotection and nuclear safety (model CASTEAUR and HAMSTER. As a whole, the radionuclide predictions for137Cs for all considered models. At the same time the CASTEAUR model estimate the activity concentrations of 137Cs and in water more precisely than in bottom sediments

The Nature of High Soil Radioactivity in Chinese Province Guangdong

Soil is a basic component of biosphere and its important natural resource. The article deals with the analysis of soil radioactivity in Chinese province Guangdong. In the course of the analysis, it was stated that highly radioactive soil of China had been formed due to deep chemical weathering of highly radioactive potassium granites. High uranium and thorium contents in them are caused by specific conditions of weathering crust formation and subsequent pedogenesis. High dose loads for a man are formed in the development fields of such rock types

Mineralogical and geochemical features of human body ash residue of spatially-localized technogenic system (Norilsk city)

The paper presents the information on the element and mineral composition of the human body ash residue of Norilsk residents. The data are obtained by such methods as X-ray analysis, inductively coupled plasma mass spectrometry, and electron microscopy. This research has identified the content of 47 elements, 17 of which have their own mineral phases. Besides, the estimation of average content of chemical elements in terms of sex and correlation analysis of the data was conducted in this research. The final results indicate the influence of Norilsk industry on the element and mineral composition of ash residue. For example, the accumulation of such elements as Zr, Al, Ca, Y, some rare earth, and radioactive elements has been observed in the human body ash residue of Norilsk residents. The presence of Ag, Au, Pt microphases and numerous compounds of Cu, Ni etc. was detected among all mineral phases

Mineralogical and Geochemical Characteristics of the Human Body Ash Residue

The article is devoted to the element composition of the human body ash residue of some Russian cities. It presents the element composition of the human body ash residue, the distribution of elements in the ash residue depending on age and sex. The specific elements of different cities, showing the possible influence of the environmental conditions on the element composition of the human body ash residue. The main objective of this paper is to study the element composition of the human body ash residue and determine the regional characteristics. The methods of instrumental neutron activation analysis and inductively coupled plasma mass spectrometry were applied, an electronic microscope being used as a tool. The result of the research is 63 elements identified within in the human body ash residue. The issue is topical as it expands the knowledge of rare and radioactive elements within the human body and contributes to medicine, for example, by identifying the chemical elements to be included in a person's diet

Оценка содержания урана в питьевой воде: исследование в Павлодарской области, Казахстан

This paper presents research results on uranium in drinking water in the territory of the Pavlodar region. Research data shows that uranium content in water is significantly higher than its maximum permissible concentration of 0.015 mg/dm3 as stated in the acts, which Russia and the USA has approved by the PEL of 32 [mu]g/l. Two out of five settlements where uranium concentration in water is at its peak suffer from anthropogenic impact. The results show that water in the northeastern part of the investigated area contains high uranium level due to geological and metallogenic peculiarities of the region

Оценка содержания урана в питьевой воде: исследование в Павлодарской области, Казахстан

This paper presents research results on uranium in drinking water in the territory of the Pavlodar region. Research data shows that uranium content in water is significantly higher than its maximum permissible concentration of 0.015 mg/dm3 as stated in the acts, which Russia and the USA has approved by the PEL of 32 [mu]g/l. Two out of five settlements where uranium concentration in water is at its peak suffer from anthropogenic impact. The results show that water in the northeastern part of the investigated area contains high uranium level due to geological and metallogenic peculiarities of the region