Study and Prediction of the Microelement Composition of Soils of Model Phytocenoses of Soil Lysimeters

2018 ◽  
Vol 73 (1) ◽  
pp. 26-33
Author(s):  
M. V. Evdokimova ◽  
V. M. Gendugov ◽  
G. P. Glazunov ◽  
I. O. Plekhanova
Keyword(s):  
Microelement Composition ◽  
Soil Lysimeters

PROBLEMS OF QUALITY AND SAFETY OF BOTTLED DRINKING WATER

2018 ◽  
Author(s):  
Л.И. АМБАРЦУМЯН ◽  
Е.Н. ГУБА ◽  
М.В. ГУСЕВА ◽  
С.Н. ДИЯНОВА ◽  
В.В. ИЛЛАРИОНОВА
Keyword(s):  
Drinking Water ◽  
Chemical Composition ◽  
Water Samples ◽  
Quality And Safety ◽  
Testing Laboratory ◽  
Bottled Drinking Water ◽  
Microelement Composition ◽  
Microbiological Indicators

Проведены исследования качества 12 образцов питьевой бутилированной воды в условиях аккредитованной испытательной лаборатории. Исследование информативности маркировки образцов воды выявило, что не все производители выполняют требования ТР ТС 022/2011. Дана оценка органолептических, физико-химических и микробиологических показателей питьевой воды. Определены критерии безвредности химического состава образцов. Исследован макро- и микроэлементный состав. Выявлена необходимость повышения степени ответственности производителей при формировании качества. The quality of 12 samples of bottled drinking water was studied in an accredited testing laboratory. The study of informative labeling of water samples revealed that not all manufacturers fulfill the requirements of TR TS 022/2011. The evaluation of organoleptic, physicochemical and microbiological indicators of drinking water is given. Criteria of harmlessness of the chemical composition of samples are defined. It is investigated macro- and microelement composition of drinking water. The necessity to increase the degree of responsibility of producers in the formation of quality is revealed.

scholarly journals Changes of macro- and microelement composition of the liver in rats for artificial hypobiosis

2018 ◽  
Vol 0 (1 (10)) ◽  
pp. 45-47
Author(s):  
Anna Umanska ◽  
Dmytro Melnichuk ◽  
Lilia Kalachnyuk
Keyword(s):  
Artificial Hypobiosis ◽  
Microelement Composition

scholarly journals ANALYSIS OF MACRO AND MICROELEMENTS IN TEETH, SALIVA, AND BLOOD OF WORKERS IN FERGANA CHEMICAL PLANT OF FURAN COMPOUNDS

2014 ◽  
Vol 7 (2) ◽  
Author(s):  
Sunnatillo Gaffarov ◽  
Salim Sharipov
Keyword(s):  
Chemical Elements ◽  
Chemical Plant ◽  
Ecological Environment ◽  
Analysis Method ◽  
Hard Tissue ◽  
Dental Hard Tissue ◽  
The People ◽  
Microelement Composition ◽  
Dental Diseases ◽  
Neutron Activation Analysis Method

This article aims to share the results of research conducted in the Fergana chemical plant of furan compounds (FCPFC) in Uzbekistan.19 workers of the Furan compounds plant, in Fergana, Uzbekistan, were tested. By neutron activation analysis method, we have studied microelement composition of saliva, blood, dental hard tissue, and the level of Ca, Zn, Fe, and Ag in these subjects. We havedetected that the level of chemical elements in dental hard tissue, blood, and saliva of these workers was subject to negative changes as compared to the analysis results from those in the control group.The research results havepractical value for the prophylaxis, treatment, and health resumption of the people living in rugged ecological environment and workers who are engagedwith harmful substances in chemical industry.  Furthermore,this research also provides recommendations fortreatment of dental diseases related to common conditions of pathophysiological processes carried out bylivingorganisms.

scholarly journals Amounts of throughfall and lysimetric water in a sub-mountain beech forest in the Kremnické vrchy Mts. (West Carpathian Mts., Slovakia)

2008 ◽  
Vol 54 (No. 5) ◽  
pp. 207-211 ◽  
Author(s):  
R. Janík ◽  
J. Pichler
Keyword(s):  
Beech Forest ◽  
Soil Horizons ◽  
Average Amount ◽  
Experimental Site ◽  
The West ◽  
Lysimetric Water ◽  
Clear Cut ◽  
Beech Stand ◽  
Soil Percolation ◽  
Soil Lysimeters

The paper deals with throughfall and soil percolation in a sub-mountain beech forest situated at the Ecological Experimental Site (EES) Kremnické vrchy Mts. (the West Carpathian Mts., Slovakia). The research was conducted in 1988–2008. The throughfall was sampled at regular periods, both from the open plot (clear-cut) and from the plot with complete stocking, covered with a mature beech stand. The soil percolation was evaluated with soil lysimeters. In 1989 and 2004, the plots were treated with cutting – with the aim to reduce the current stocking. The average amount of throughfall was 772.2 mm in the open plot and 616.3 mm in the control. The amount of soil percolation decreased with increasing depth: from 398.9 mm to 103.8 mm in the control and from 488.8 mm (surface) through 169.9 mm (10 cm) to 188.8 mm (25 cm) in the open plot. The differences between the plots were statistically highly significant. No significant differences were found between the soil horizons.

Chromium(VI) leaching from large undisturbed soil lysimeters following application of a simulated copper-chromium-arsenic (CCA) timber preservative

Soil Research ◽  
2002 ◽  
Vol 40 (2) ◽  
pp. 351 ◽  
Author(s):  
P. L. Carey ◽  
V. J. Bidwell ◽  
R. G. McLaren
Keyword(s):  
Organic Matter ◽  
Soil Profile ◽  
Sandy Loam ◽  
Soil Analysis ◽  
Rainfall Simulation ◽  
Soil Cores ◽  
Undisturbed Soil ◽  
First Order ◽  
Copper Chromium ◽  
Soil Lysimeters

Copper, chromium, and arsenic (CCA) solutions are commonly used in New Zealand as a means of preserving softwood timbers such as Pinus radiata. With stock working solutions of CCA salts in timber treatment plants frequently 10% w/v or more, there exists a potential for spillage and leaching of these compounds to groundwater. High concentrations of Cr(VI) (up to 52 mg Cr/L) were found in the leachates of large undisturbed soil lysimeters where a Templeton sandy loam (Immature Pallic) had received surface applications of a simulated copper, chromium, and arsenic (CCA) timber preservative. Leaching was produced by using a combination of natural and imposed rainfall simulation over the lysimeters for a period of 102 days after CCA application. An average of 26% of the applied chromium was collected in the leachates after 102 days. Of the mean 74% of Cr(VI) still retained within the soil profile after leaching ended, almost half was located in the top 100 mm of the profile. No copper or arsenic was detected in any of the lysimeter leachates, with soil analysis indicating that these elements had been retained within the soil profile. In an incubation study, soil cores sampled from the same Templeton sandy loam and split into alternate 50-mm segments (to 450 mm) were stored at 10˚C for 102 days after addition of an identical CCA solution. These were periodically extracted for available chromium. Results showed that the reduction of dichromate/chromate anions (Cr2O72–/CrO42–) to the strongly sorbed chromic cation (Cr3+) was largely first-order and greatest in surface layers where soil organic matter contents were largest. After 102 days, <1% of the added Cr(VI) was still extractable in the 0–50 mm soil cores whilst ≈60% of Cr(VI) in the 400–450 mm cores (or deeper) was still extractable after the same period. A linear systems model comprising a series of conceptual mixing cells was used to describe the individual and mean Cr(VI) leaching breakthrough curves (BTCs). This State-Space Mixing Cell model proved effective in simulating the Cr(VI) leaching using first-order kinetics to quantify rate-limited local solute adsorption coupled to advective-dispersive transport. The solute mass involved in the model process was ≈30%. The bulk of the remaining 70% of applied dichromate was assumed to have undergone reduction to the non-mobile chromium cation. This study shows that there exists a significant potential for Cr(VI) to be a serious threat to groundwater in the event of a large uncontained spillage of a concentrated CCA solution. This potential can be significantly lessened if the Cr(VI) is reduced after retention in an organic matter rich layer.

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