scholarly journals Minimization of the impact of rubble production wastes on the environment by their involvement in the compositions of road'building materials

2021 ◽  
Vol 29 (1) ◽  
pp. 82-91
Author(s):  
Nataliya A. Konovalova ◽  
Pavel P. Pankov ◽  
Dmitry V. Bespolitov
Keyword(s):  
Inductively Coupled Plasma ◽  
Raw Materials ◽  
Stone Formation ◽  
Cost Effective ◽  
Atomic Emission ◽  
Crushed Stone ◽  
Emission Spectrometry ◽  
Stone Materials ◽  
Artificial Stone ◽  
The Impact

The impact of Taldan crushed stone plant and wastes formed in process of its activity on the environment is considered. About 2.9 million tons of siftings of rock grinding were accumulated in dump massifs with a total area of 600 hectares. Therefore, elimination of accumulated harm to the environment that has arisen over many years of operation of Taldan crushed stone plant is the actual task. One of the technological solutions of liquidation of objects of accumulated harm to the environment based on physicochemical impact on wastes is stabilization or artificial stone formation. Drawing of siftings of rock in soil concrete compositions (artificial stone materials) allows to solve complex of acute environmental problems due to their largetonnage direct use. The use of siftings of rock in road building will contribute to the rational and cost-effective use of natural mineral raw materials, since this process will not entail an increase in the costs of its extraction and processing. A set of modern methods (atomic-emission spectrometry with inductively coupled plasma, scanning electron microscopy, X-ray phase analysis, infrared spectroscopy) were used to study the chemical, phase composition and properties of siftings of rock to substantiate the possibility of its utilization in the composition of soil concrete. It is shown that the introduction of an 8 wt. % of mineral binder and polymer stabilizing additive Element (1, 5, 10 wt. %) allows to get soil concrete with a mark of strength М100.

Preparation of High-Purity Magnesium Aluminate Spinel Powder by Thermal Decomposition Method

2016 ◽  
Vol 697 ◽  
pp. 23-26
Author(s):  
Xiao Juan Wu ◽  
Jun Shou Li ◽  
Xiang Jun Tang ◽  
Ming Yuan Wang ◽  
Su Li
Keyword(s):  
Thermal Decomposition ◽  
Particle Size ◽  
High Purity ◽  
Inductively Coupled Plasma ◽  
Raw Materials ◽  
Atomic Emission ◽  
Emission Spectrometry ◽  
Magnesium Aluminate ◽  
Plasma Atomic Emission Spectrometry ◽  
Spinel Powder

A precursor was obtained after dissolution, drying and cooling using MgSO4·7H2O and NH4Al (SO4)2·12H2O as raw materials. Then the high-purity magnesium aluminate (MgAl2O4) spinel powder was synthesized via the thermal decomposition process of the precursor calcined at different temperatures. The phase, morphology and particle size of the powder obtained at different calcining temperatures were characterized by X-ray diffraction, scanning electron microscopy and laser particle size analyzer. And also the purity of the powder was tested by inductively coupled plasma-atomic emission spectrometry (ICP-AES). The results show that the powder exhibits better crystalline shape and bigger crystalline size with the calcining temperature increasing. The calculated grain size is below 30 nm according to Scherrer formula. The particle size of the powder is below 35μm, the particle size distribution is relatively wide and some particles reunite to be bigger ones with the calcining temperature rising. The powder appears to be plate-shaped and the morphology of the grain is irregular particle. The purity of the powder is relatively high. Especially, the purity of the powder obtained at 1150 °C is 98.88%.

scholarly journals Mineral composition of rhizomes Potentilla erecta L.

2018 ◽  
pp. 74-83
Author(s):  
V. M. Minarchenko ◽  
V. G. Kaplunenko ◽  
L. А. Glushchenko ◽  
N. P. Коvalska ◽  
L. М. Babenko
Keyword(s):  
Inductively Coupled Plasma ◽  
Raw Materials ◽  
Atomic Emission ◽  
Pharmacological Action ◽  
Raw Material ◽  
Emission Spectrometry ◽  
Plant Raw Materials ◽  
Natural Zones ◽  
The Difference ◽  
Object Of Study

Chemical substances, which accumulate selectively by plants, can influence at their pharmacological action: to increase or decrease their absorption, resorptive properties; be synergists or antagonists, as well as to reduce or enhance the toxic effect. Potentilla erecta used in traditional herbal medicine system in many countries due to high therapeutic value. The concentrations of secondary metabolites in the plant raw materials are well understood. However, the data on concentration of trace and major elemental composition of it raw material remains extremely insufficient. The aim of our study was to examine the elemental compound of P. erecta rhizomes. The object of study was the rhizomes of P. erecta from a various natural zones of Ukraine (Carpathians, Polesie). Raw material was analyzed by atomic emission spectrometry with inductively coupled plasma. Twenty nine elements were identified in studied samples.  It was established that the level of concentration decreases in this sequence: Ca > S > Mg > K > Sn > I > P > Ba > Al > Zn > Mn > Fe > Sr > Si > Ag > Cr > Ni > Cu > Pb > V > Se > Ti > Cd > Ge > Na > Mo > Co > As > Bi. Ca, S and Mg are present in high concentrations in both analyzed samples of P. erecta. K, Sn, I, P, Ba and Al were identified in quantities of more than 100 mg/kg. Other elements found in small quantities. The content of some metals was significantly different in the analyzed samples. The main reason is, probably, the difference between the ecological conditions of plants habitats. The experimental data can be used for prognosing and planning pharmacological research of P. erecta and development of quality control methods for plant material of this medicinal plant.

scholarly journals The Hazard Content of Cadmium, Lead, and Other Trace Elements in Some Medicinal Herbs and Their Water Infusions

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Fuad A. Ababneh
Keyword(s):  
Inductively Coupled Plasma ◽  
Toxic Elements ◽  
Raw Materials ◽  
Daily Intake ◽  
Atomic Emission ◽  
World Health ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission Spectrometry ◽  
Inductively Coupled ◽  
Health Organization

54 samples belonging to 23 herbal species (15 individuals and 8 mixtures) were analyzed for their contents of heavy metals in the raw materials and in their water infusions. Trace and toxic elements in these samples were determined by using inductively coupled plasma-atomic emission spectrometry (ICP-OES) following acid digestion. The order of decreasing mean metal concentrations in raw materials (mg/kg) was found to be as follows: Fe (440) > Mn (162) > Zn (45.8) > Cu (12) > Pb (10.4) > Ni (5.4) > Cr (2.9) > Co (0.91) > Cd (0.5). It was found that 21% of the analyzed samples contain both Cd and Pb above their permissible limits. However, the infusions produced from these plants were found to contain fewer amounts of metals than the raw materials. Studied metals had the following mass transfer percentages to the infusion solutions (Fe: 3.5%, Cd: 14%, Cr: 15%, Pb: 20%, Co: 29%, Ni: 31%, Zn: 36%, Cu: 48%, and Mn: 53%). The estimated daily intake calculated for the toxic elements Pb and Cd through the consumption of herbal infusions was far below the tolerable daily intake set by the World Health Organization (WHO).

scholarly journals Atomic Emission Method for Total Boron in Blood during Neutron-Capture Therapy

2001 ◽  
Vol 47 (10) ◽  
pp. 1796-1803 ◽  
Author(s):  
Juha Laakso ◽  
Martti Kulvik ◽  
Inkeri Ruokonen ◽  
Jyrki Vähätalo ◽  
Riitta Zilliacus ◽  
...  
Keyword(s):  
Whole Blood ◽  
Neutron Capture ◽  
Inductively Coupled Plasma ◽  
Atomic Emission ◽  
Emission Spectrometry ◽  
Neutron Capture Therapy ◽  
Inductively Coupled ◽  
Icp Ms ◽  
The Impact ◽  
Boron Determination

Abstract Background: Boron neutron-capture therapy (BNCT) is a drug-targeted binary radiotherapy for cancer. The 10B capture of thermal neutrons induces secondary radiation within cells during irradiation. The most widely used boron carrier is 4-dihydroxyborylphenylalanine (BPA). The duration and timing of the irradiation is adjusted by monitoring 10B concentrations in whole blood. Methods: We developed a new method for boron determination that uses inductively coupled plasma atomic emission spectrometry (ICP-AES) and protein removal with trichloroacetic acid before analysis. This method was compared with the established but tedious inductively coupled plasma mass spectrometry (ICP-MS), which uses wet ashing as sample pretreatment. Erythrocyte boron concentrations were determined indirectly on the basis of plasma and whole blood boron concentrations and the hematocrit. The hematocrit was determined indirectly by measuring calcium concentrations in plasma and whole blood. Results: Within- and between-day CVs were <5%. The recoveries for boron in whole blood were 95.6–96.2%. A strong correlation was found between results of the ICP-AES and ICP-MS (r = 0.994). Marked differences in plasma and erythrocyte boron concentrations were observed during and after infusion of BPA fructose complex. Conclusions: The present method is feasible, accurate, and one of the fastest for boron determination during BNCT. Our results indicate that it is preferable to determine boron in plasma and in whole blood. Indirect erythrocyte-boron determination thus becomes possible and avoids the impact of preanalytical confounding factors, such as the influence of the hematocrit of the patient. Such an approach enables a more reliable estimation of the irradiation dose.

scholarly journals Elemental analysis of Siberian medicinal plants using arc atomic emission spectrometry with a multichannel analyzer of emission spectra

2019 ◽  
Vol 85 (1II)) ◽  
pp. 60-66
Author(s):  
V. I. Otmakhov ◽  
E. S. Rabtsevich ◽  
E. V. Petrova ◽  
I. V. Shilova ◽  
E. S. Sheleg ◽  
...  
Keyword(s):  
Raw Materials ◽  
Direct Determination ◽  
Emission Spectra ◽  
Atomic Emission ◽  
Metrological Certification ◽  
Chemical Form ◽  
Spectral Lines ◽  
Emission Spectrometry ◽  
Multichannel Analyzer ◽  
The Impact

Study of macro- and microelement composition of the ash of plant raw materials revealed the prevailing matrix elements, their chemical form and content. It is shown that direct determination of the impurities in mineral residues by the method of arc atomic emission spectroscopy with a multichannel analyzer of emission spectra (MAÉS) is complicated by the impact of the macro component and its chemical form on the intensity of the spectral lines of the impurities. Introduction of a corrective additive is proved to eliminate this effect. A technique for measuring the mass fraction of macro elements and trace elements in plant ash is proposed and metrological certification of the procedure is carried out.

Analysis of iron ores by ICP-AES

2021 ◽  
Vol 87 (6) ◽  
pp. 20-24
Author(s):  
T. A. Karimova ◽  
G. L. Buchbinder ◽  
N. Romanov ◽  
S. V. Kachin
Keyword(s):  
Inductively Coupled Plasma ◽  
Mass Fraction ◽  
Iron Ore ◽  
Raw Materials ◽  
Atomic Emission ◽  
Emission Spectrometry ◽  
Plasma Atomic Emission Spectrometry ◽  
Iron Line ◽  
Inductively Coupled ◽  
Line Intensities

A method for the analysis of iron ore raw materials (IORM) using inductively coupled plasma atomic- emission spectrometry (ICP-AES) and Concentration Ratio Calibration (CRC) has been developed. However, the general eq. for calibration by concentration ratios used in analysis of metals and alloys was modified with allowance for the IORM characteristics: all the elements, except sulfur, were represented as oxides, iron was represented as FeO and Fe2O3, and the total of 100% included ignition losses (LOI). A variant of solving the equation is proposed, which allowed us to relate the relative concentrations of the components (the ratios of the mass fraction of the determined components to the mass fraction of iron oxide) to the ratio of the line intensities of the certain element and iron line measured on a spectrometer. The equation takes into account the content of FeO and LOI, which are determined by standard methods of analysis. A method for acid decomposition of the samples in autoclaves heated in a HotBlock 200 system is proposed: a sample weight of 0.25 g was decomposed in closed vessels at a temperature of 150 – 180°C in the mixture of HCl, HF and HNO3. The following components were determined in concentrates and pellets: Fe2O3, Fetot, Al2O3, CaO, Cr2O3, K2O, MgO, MnO, Na2O, P2O5, SiO2, TiO2, Co, Cu, Mo, Ni, Pb, S, V, Zn. The correctness of the developed method is confirmed by the analysis of SS of iron ore and iron concentrates, as well as by comparison with the results obtained by standardized methods. The proposed technique provides iron determination in iron ore raw materials with an accuracy no worse than that specified in GOST 23581, all other components are determined in a wider range of contents and with a higher accuracy.

Silicate analysis of carbonated rocks using ICP-AES with calibration by the concentration ratio

2020 ◽  
Vol 86 (5) ◽  
pp. 16-21
Author(s):  
T. A. Karimova ◽  
G. L. Buchbinder ◽  
S. V. Kachin
Keyword(s):  
Inductively Coupled Plasma ◽  
Concentration Ratio ◽  
Total Error ◽  
Atomic Emission ◽  
Emission Spectrometry ◽  
Calibration Error ◽  
Plasma Atomic Emission Spectrometry ◽  
Standard Samples ◽  
Inductively Coupled ◽  
Carbonate Materials

Calibration by the concentration ratio provides better metrological characteristics compared to other calibration modes when using the inductively coupled plasma atomic emission spectrometry (ICP-AES) for analysis of geological samples and technical materials on their base. The main reasons for the observed improvement are: i) elimination of the calibration error of measuring vessels and the error of weighing samples of the analyzed materials from the total error of the analysis; ii) high intensity of the lines of base element; and iii) higher accuracy of measuring the ratio of intensities compared to that of measuring the absolute intensities. Calcium oxide is better suited as a base when using calibration by the concentration ratio in analysis of carbonate rocks, technical materials, slags containing less than 20% SiO2 and more than 20% CaO. An equation is derived to calculate the content of components determined in carbonate materials when using calibration by the concentration ratio. A method of ICP-AES with calibration by the concentration ratio is developed for determination of CaO (in the range of contents 20 – 100%), SiO2 (2.0 – 35%), Al2O3 (0.1 – 30%), MgO (0.1 – 20%), Fe2O3 (0.5 – 40%), Na2O (0.1 – 15%), K2O (0.1 – 5%), P2O5 (0.001 – 2%), MnO (0.01 – 2%), TiO2 (0.01 – 2.0%) in various carbonate materials. Acid decomposition of the samples in closed vessels heated in a HotBlock 200 system is proposed. Correctness of the procedure is confirmed in analysis of standard samples of rocks. The developed procedure was used during the interlaboratory analysis of the standard sample of slag SH17 produced by ZAO ISO (Yekaterinburg, Russia).

Sign in / Sign up

Export Citation Format

Share Document