scholarly journals Research of the Chemical Composition of Industrial Waste of the Kadamzhay Antimony Combine

2020 ◽  
Vol 6 (12) ◽  
pp. 73-78
Author(s):  
N. Erkinbaeva ◽  
Y. Tashpolotov ◽  
E. Ysmanov
Keyword(s):  
Chemical Composition ◽  
Industrial Waste ◽  
Toxic Elements ◽  
Chemical Elements ◽  
New Products ◽  
Atomic Emission ◽  
Waste Dump ◽  
X Ray ◽  
Fluorescence Methods ◽  
Titanium Vanadium

This article investigates the chemical composition of industrial waste (dump slag and flotation tailings). This study, in contrast to previous studies, was carried out by chemical, atomic emission, X-ray fluorescence methods. Valuable rare earth chemical elements (ytterbium, yttrium, lanthanum, scandium), valuable chemical elements (antimony, titanium, vanadium, tungsten, niobium, indium, germanium, gallium, tantalum, molybdenum, strontium, beryllium, zirconium, cobalt) and others have been determined. The oxides of elements (SiO2, Al2O3, MgO, CaO, Fe2O3, Na2O, K2O, S, FeO) have been investigated. Toxic elements (arsenic, cadmium, tin, lead). These studies were carried out with the aim of using man-made waste in various sectors of the national economy for the disposal of man-made waste and to improve the environmental situation in the region and reduce material costs for the production of new products.

scholarly journals Case Study On The Relationships Between Soil Contents Of Some Harmful Chemical Elements Determined By Different Equipment

2015 ◽  
Vol 1 ◽  
pp. 89
Author(s):  
Rimantė Zinkutė ◽  
Ričardas Taraškevičius
Keyword(s):  
Linear Relationship ◽  
Chemical Elements ◽  
Linear Equations ◽  
Atomic Emission ◽  
Energy Dispersive ◽  
X Ray ◽  
Edxrf Analysis

Comparison of total contents of Ba, Cr, Cu, Mn, Mo, Ni, Sn, Pb, V, Zn, Al, Ca, Fe, Mg determined in topsoil of central part of Vilnius by optical atomic emission spectrophotometry (OAES) with respective contents determined by energy-dispersive x-ray fluorescence (EDXRF), analysis of their correlation and linear relationship with and without outliers are the tasks of research. For most elements, except Ca, Sn, Ba, the contents determined by EDXRF are significantly lower and less variable. They can be predicted according to OAES-contents using linear equations. After elimination of outliers for all elements the correlation is significant at p<0.05.

scholarly journals FEATURES OF DENTINE CHEMICAL COMPOSITION OF INTACT TEETH AND TEETH WITH WEDGE-SHAPED DEFECTS

2021 ◽  
Vol 74 (8) ◽  
pp. 1869-1875
Author(s):  
Svitlana P. Yarova ◽  
Iryna I. Zabolotna ◽  
Olena S. Genzytska ◽  
Andrii A. Komlev
Keyword(s):  
Chemical Composition ◽  
Chemical Elements ◽  
Cervical Region ◽  
Cervical Lesions ◽  
X Ray ◽  
Sodium Magnesium ◽  
Calcium Phosphorus ◽  
Cervical Area ◽  
Focused Beam

The aim: Is to define dentine chemical composition of intact teeth and those with wedge-shaped defects followed by the analysis of revealed differences. Materials and methods: Longitudinal sections of 22 clinically removed teeth (12 – clinically intact ones, 10 – with wedge-shaped defects) from both jaws were studied in patients aged between 25-54 years. JSM-6490 LV focused beam electron microscope (scanning) with system of energy-dispersive X-ray microanalysis INCA Penta FETх3 was used. The chemical composition of 148 dentine areas in the incisal region (tubercle), equator, cervical area has been determined as a percentage of the weight amounts of carbon, oxygen, calcium, phosphorus, sodium, magnesium, sulfur, chlorine, zinc, potassium, aluminum. Results: Dentine chemical composition of teeth with wedge-shaped defects differed from those of intact teeth by significantly lower content: sodium, chlorine and calcium – in the incisal region (tubercle); sodium, magnesium − at the equator; sodium, chlorine and calcium – in the cervical region (p≤0.05). In the sample groups with cervical pathology there was more sulfur and oxygen in the incisal region (tubercle), phosphorus and zinc – at the equator, carbon and potassium – in the cervical region (p≤0.05). Conclusions: Differences in the chemical composition of intact teeth and teeth with wedge-shaped defects, the presence of correlation between the studied chemical elements confirm the role of macro- and microelements in the pathogenesis of non-carious cervical lesions.

scholarly journals Study of Chemical Composition of Walnut Shell Coal

2021 ◽  
Vol 7 (7) ◽  
pp. 90-95
Author(s):  
G. Toktorbaeva ◽  
Y. Tashpolotov ◽  
E. Ysmanov
Keyword(s):  
Chemical Composition ◽  
Ash Content ◽  
Walnut Shell ◽  
X Ray ◽  
Fluorescence Methods

The article investigates the chemical composition of walnut shell coal by spectrographic and X-ray fluorescence methods. The composition of the ash content of walnut shell coal has been determined: Si, K, F, Ca, Mg, Fe, Na, Mn, Zn, Cu, I, Ba, As, Ni, etc. Carbon — 84–84.9%.

Multi-Component Coatings Formation on Polycathode Magnetron Sputtering Systems

2017 ◽  
Vol 265 ◽  
pp. 166-170
Author(s):  
V.V. Kolesnik ◽  
Yu.K. Rubanov ◽  
Yu.E. Tokach
Keyword(s):  
Chemical Composition ◽  
Magnetron Sputtering ◽  
Coating Thickness ◽  
Diffusion Zone ◽  
Chemical Elements ◽  
Substrate Material ◽  
Coating Materials ◽  
Surface Microrelief ◽  
X Ray ◽  
Coating Formation

The results of experiments aimed at obtaining multi-component coatings, having a wider range of properties compared to single-component coatings, are provided. The process of formation of coating based on multi-component alloy Co (18...20%)-Cr (5...7%)-Al (0.3...0.4%)-Y(0.2...0.5) was studied. The chemical composition and thickness of the coating as well as the state of the transition layer were also studied. The results of electron probing and X-ray fluorescence microanalysis of obtained coatings are provided. This paper also demonstrates that the properties of surface microrelief are determined by the conditions of coating formation; that each sample of coating has similar sets of chemical elements, that their concentration depends on the precipitation conditions, chemical elements are equally distributed along the thickness of samples, and the diffusion zone of coating materials and substrate is almost non-existent. The low content of substrate material was found in obtained coatings. As the coating thickness increased, the content of substrate material decreased sharply.

scholarly journals Accumulation of chemical elements in tree waste of Pinus sylvestris L. growing in various ecological zones

2021 ◽  
Vol 31 ◽  
pp. 00013
Author(s):  
Elena Kolmogorova
Keyword(s):  
Chemical Composition ◽  
Pinus Sylvestris ◽  
Chemical Elements ◽  
Botanical Garden ◽  
Waste Dump ◽  
Ecological Zones ◽  
Ecological Conditions ◽  
Open Cast Mine ◽  
Open Cast

We investigated the pattern of phosphorus, nitrogen and ashes accumulation in tree waste of Pinus sylvestris L. growing in various ecological zones. The studied areas were located in the Kemerovo Region: on flood-land of the Tom River (the Kuzbass Botanical Garden) and on the waste dump of the Kedrovsky open-cast mine. It was shown that the chemical composition of tree waste of Pinus sylvestris L. is correlated with ecological conditions of its vegetation. So, the tree waste of Pinus sylvestris L. growing on the waste dump is characterized by three-fold increased level of nitrogen compared to ones from the Kuzbass Botanical Garden. The concentration of phosphorus and ashes showed no differences between groups. We suggested that the diversity in destruction of tree waste proceeding in different conditions and microbial cenosis leads to differentiated accumulation of chemical elements in the tree waste.

scholarly journals REACTION OF SPRING WHEAT IREN ON ABIOTIC CONDITIONS WITH CHEMICAL COMPOSITION OF GRAIN

2017 ◽  
Vol 12 (2) ◽  
pp. 42-47
Author(s):  
Ильдус Фатыхов ◽  
Ildus Fatykhov ◽  
Елена Корепанова ◽  
Elena Korepanova ◽  
Борис Борисов ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Spring Wheat ◽  
Inductively Coupled Plasma ◽  
Chemical Elements ◽  
Raw Materials ◽  
Atomic Emission ◽  
Abiotic Conditions ◽  
Inductively Coupled ◽  
Russian Scientific ◽  
Russian Scientific Research Institute

The problem of the chemical composition of fruits and seeds of field crops, depending on abiotic conditions, requires further investigation and is an urgent task. The aim of the research was to study the reaction of spring wheat Iren to abiotic conditions by the chemical composition of the grain. The research tasks are to determine the chemical composition of grain by 70 elements; to reveal differences in the content of chemical elements in grains, grown in various abiotic conditions. The object of research is the grains of spring wheat of Iren variety. Samples of Iren spring wheat grains of 2014 and 2015 years harvest were taken to determine the content of 70 chemical elements Agricultural consumers’ co-operative named after Michurin of Vavozhskiy district of the Udmurt Republic. The content of 70 chemical elements in grain was determined in the Analytical Certified Testing Center (ACTC) of All-Russian Scientific Research Institute of Mineral Raw Materials named after N.M. Fedorovskiy (VIMS). The analysis method is mass-spectral with inductively coupled plasma (MS) + atomic emission with inductively coupled plasma (AE) according to the NSAM technique №512-MS. The reaction of Irene spring wheat to abiotic conditions was expressed by a different content of 45 chemical elements in the grains. The concentration of 25 chemical elements in the grain over the years of research did not differ. Grain, grown in the abiotic conditions of 2014, contained more lithium, boron, sodium, aluminum, calcium, vanadium, chromium, cobalt, nickel, copper, zinc, gallium, germanium, arsenic, selenium, rubidium, yttrium, zirconium, niobium, palladium, tin, lanthanum, cerium, neodymium, hafnium, tantalum, tungsten, iridium, mercury, lead, thorium. In the abiotic conditions of 2015, the grains had a higher content of magnesium - by 255.3, silicon by 6.1, phosphorus by 738.8, sulfur by 153.2, potassium by 871.9, titanium by 6 , 23, manganese - by 19.4, iron - by 9.6 μg / g, relative to similar indicators in the grain crop of 2014.

PRODUCTION OF COMPOSITE CEMENT BASED ON INDUSTRIAL WASTE

2021 ◽  
pp. 38-45
Author(s):  
Ж. Т. Айменов ◽  
А. Ж. Айменов ◽  
Н. Б. Сарсенбаев ◽  
Б. К. Сарсенбаев
Keyword(s):  
Chemical Composition ◽  
Structure Formation ◽  
Industrial Waste ◽  
Mineralogical Composition ◽  
Carbonate Content ◽  
Thermal Methods ◽  
X Ray ◽  
Physicochemical Processes ◽  
Modern Methods ◽  
Composite Cements

Проведены исследования физико-химических процессов структурообразования композиционных цементов с добавкой отходов обогащения полиметаллических руд современными методами. Были определены минералогический состав, химический состав с использованием рентгенофазового, микроскопического, дифференциально-термического методов анализа. Это позволило установить, что содержание карбонатов в отходах обогащения полиметаллических руд до 30% не понизило прочности образцов. Investigations of the physicochemical processes of structure formation of composite cements with the addition of wastes of concentration of polymetallic ores by modern methods have been carried out. The mineralogical composition, chemical composition were determined using X-ray phase, microscopic, differential thermal methods of analysis. This made it possible to establish that the carbonate content in the wastes of enrichment of polymetallic ores up to 30% did not reduce the strength of the samples.

scholarly journals Characterisation of copper alloy antique ornamental accessories found in Northern Albania

2014 ◽  
Vol 2 (2) ◽  
Author(s):  
Olta Çakaj ◽  
Edlira Duka ◽  
Zamir Tafilica ◽  
Frederik Stamati ◽  
Nikolla Civici ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Copper Alloy ◽  
Evaluation Method ◽  
Chemical Elements ◽  
Casting Process ◽  
Metallic Alloys ◽  
Corrosion Products ◽  
X Ray ◽  
Lead Alloys ◽  
Polarised Light

This study was performed to determine the chemical elements used to produce ancient metallic alloys and to understand the manufacture technique of three archaeological founds. It also presents an evaluation method of the objects’ authenticity based on the observation of the corrosion products. This article also includes three ornamental accessories ca. VII-IV century BC found in the vicinity of Shkodra (Albania). A necklace, a belt application and a button are examined using X ray fluorescence (XRF) to determine the chemical composition and optical microscopy (OM) with reflected and polarised light in order to study the microstructure and the corrosion products. From the XRF results all the objects are bronze, copper-tin and copper-tin-lead alloys. After the OM analysis they are authentic objects (not fake replicas) and might have been produced after a casting process in moulds.

scholarly journals Physicochemical investigation of shrimp fossils from the Romualdo and Ipubi formations (Araripe Basin)

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e6323 ◽  
Author(s):  
Olga Alcântara Barros ◽  
João Hermínio Silva ◽  
Gilberto Dantas Saraiva ◽  
Bartolomeu Cruz Viana ◽  
Alexandre Rocha Paschoal ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Chemical Elements ◽  
Hydroxyl Group ◽  
Large Field ◽  
Field Energy ◽  
X Ray Diffraction ◽  
X Ray ◽  
Iron Aluminum ◽  
Physicochemical Investigation ◽  
Dominant Phase

The Ipubi and Romualdo Formations are Cretaceous units of the Araripe Basin (Santana Group). The first and most ancient was deposited in a lake environment, and some fossils were preserved in shales deposited under blackish conditions. The second was deposited in a marine environment, preserving a rich paleontological content in calcareous concretions. Considering that these two environments preserved their fossils under different processes, in this work we investigated the chemical composition of two fossilized specimens, one from each of the studied stratigraphic units, and compared them using vibrational spectroscopy techniques (Raman and IR), X-ray diffraction and large-field energy-dispersive X-ray spectroscopy (EDS) mappings. Calcite was observed as the dominant phase and carbon was observed in the fossils as a byproduct of the decomposition. The preservation of hydroxide calcium phosphate (Ca10(PO4)6(OH)2, hydroxyapatite) was observed in both fossils. In addition, it was observed that there was a smaller amount of pyrite (pyritization) in the Romualdo Formation sample than in the Ipubi one. Large-field EDS measurements showed the major presence of the chemical elements calcium, oxygen, iron, aluminum and fluoride in the Ipubi fossil, indicating a greater influence of inorganic processes in its fossilization. Our results also suggest that the Romualdo Formation fossilization process involved the substitution of the hydroxyl group by fluorine, providing durability to the fossils.

scholarly journals Morphology and Chemical Composition of Silicon Carbide Surface in Interaction with Titanium Alloy under Micro-Scratching Conditions

2020 ◽  
Vol 329 ◽  
pp. 02010
Author(s):  
Vladimir Nosenko ◽  
Aleksandr Fetisov ◽  
Sergey Nosenko ◽  
Valeria Puzyrkova
Keyword(s):  
Silicon Carbide ◽  
Titanium Alloy ◽  
Chemical Composition ◽  
Path Length ◽  
Chemical Elements ◽  
Cooling Process ◽  
Corundum Crystal ◽  
Initial Shape ◽  
X Ray ◽  
Cutting Path

The article describes features of the wear site morphology formation during micro-scratching of a titanium alloy by a silicon carbide crystal in comparison with a corundum crystal. The initial shape of the crystal top and the rate of micro-scratching were assumed to be constant. No lubricating or cooling process media were used. External factors: micro-scratch depth and cutting path length. The chemical composition of wear sites was studied using micro-x-ray spectral analysis. The content of chemical elements in the surface layer of silicon carbide and adhered metal was studied at separate points and by area scanning. The accelerating voltage of the excitation electrons was changed in the range from 5 to 20 kV. The concentration of chemical elements on the surface of the wear site was determined immediately after micro-scratching and after removing the adhered metal by etching. The regularities of changes in the concentration of chemical elements depending on the accelerating voltage of the excitation electrons were determined.

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