V. K. Karandashev's research while affiliated with Russian Academy of Sciences and other places
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Publications (211)
Potentially toxic elements (PTEs) in urban dust of Moscow megacity and related risks have been studied. 78 samples were collected in the Moscow downtown in sites with different anthropogenic load, namely, major highways, residential area, and recreation zones. The concentrations of PTEs in urban dust were determined by ICP-MS and ICP-AES. Then, env...
Ageing processes of vehicle catalytic converters inevitably lead to the release of Pt and Pd into the environment, road dust being the main sink. Though Pt and Pd are contained in catalytic converters in nanoparticulate metallic form, under environmental conditions, they can be transformed into toxic dissolved species. In the present work, the dist...
1,3,5-Tris(2-diphenylphosphoryl-4-ethylphenoxymethyl)benzene (L′), a phosphorylcontaining tripodand, was synthesized for the first time in order to find extraction systems for efficient recovery of lanthanides. The main regularities of extraction of lanthanide(III) ions with mixtures of L′ and 4-benzoyl-5-methyl-2-phenyl-3-pyrazolone (HL) into CHCl...
Natural nanomaterials, which play a very important role in environmental processes, are so far poorly studied. Firstly, the separation of nanoparticles from the bulk sample is a challenge. Secondly, the absence of reference natural nanomaterials makes it impossible to compare the results obtained by different researchers and develop a unified metho...
The extraction of lanthanides(III) from nitric acid solutions in the systems involving novel functionalized ionic liquids based on cationic carbamoyl(methyl)phosphine oxide (CMPO) derivatives and dinonylnaphthalenesulfonate anions in molecular diluents was studied. The stoichiometry of the Ln(III) extracted species was determined using slope analys...
Industrial and agricultural activities lead to the release of rare earth elements (REEs) in wastewater and aquatic ecosystems, their accumulation in soils. However, the behavior of REEs in soils remains somewhat unclear. In the present work the fractionation and fixation of REEs in soddy-podzolic and chernozem soils spiked with La, Ce, and Nd chlor...
The recovery and separation of trivalent lanthanides into individual elements is difficult owing to their similar chemical behaviours. In this study, the solvent extraction of trivalent lanthanide ions from nitric acid solutions in an organic phase comprising a mixture of two electrically neutral extractants, viz. tri(n-butyl)phosphate (TBP) and N,...
The effects of different magnesium and zinc isotopes on the enzyme activity of myosin subfragment-1 have been explored. The rate of the enzymatic ATP hydrolysis in reaction media enriched with the magnetic isotope, 25Mg, is twice as high as it is in reaction media enriched with the nonmagnetic isotopes, 24Mg or 26Mg. A similar effect of nuclear spi...
A novel polyfunctional neutral organophosphorus ligand 1,2,4,5-tetra(diphenylphosphihyl)-benzene I containing four Ph2P(O)- groups fixed on the benzene platform was synthesized and studied as an extractant for U(VI), Th(IV) and lanthanides(III) ions from HNO3 solutions. The influence of aqueous and organic phases on the extraction efficiency was el...
Nanoparticles (NPs) in the environment have a potential risk for human health and the ecosystem due to their ubiquity, specific characteristics, and properties (extreme mobility in the environment, abilities to accumulate of toxic elements and penetrate into living organisms). There is still a gap in studies on the chemical composition of natural N...
The extraction of REE(III), U(VI), and Th(IV) from nitric acid solutions with solutions of diphenyl(dibutylcarbamoylmethyl)phosphine oxide considerably increases in the presence of ionic liquids with the bis[(trifluoromethyl)sulfonyl]imide anion and quaternary ammonium cations. The stoichiometry of the extractable complexes was determined. The infl...
One of the main requirements for the methods of elemental analysis of unique archaeological samples is to minimize the damage they cause. Two new procedures for analyzing silver and gold samples, weighing several milligrams, obtained by drilling from the inner surface of silver and gold artifacts of the Borodino treasure, stored in the State Histor...
Extraction of rare-earth elements(III) ions from chloride solutions with mixtures of 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone and phosphoryl-containing podands in organic solvents has been studied. The observed significant synergistic effect is associated with the formation of hydrophobic mixed-ligand complexes of rare-earth elements(III). The stoi...
Currently, nanomaterials are widely used in various fields of human activity, which inevitably leads to their release into the environment, and soils are one of the main reservoirs for nanoparticles. As nanoparticles can be particularly toxic to living organisms, the development of new approaches to the assessment of their behavior and mobility in...
Sequential extraction procedures (SEP) have been widely used for the fractionation of trace elements in soils according to their physicochemical mobility and bioaccessibility. Potassium/sodium pyrophosphate in alkaline medium may be considered as the most appropriate extracting reagent for the recovery of amorphous metal-organic complexes, which pl...
Interphase distribution of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y between aqueous HCl solutions and solutions of carbamoylmethylphosphine oxides in the presence of binary extractants, quaternary ammonium dinonylnaphthalenesulfonates, has been studied. It has been shown that the efficiency of extraction of rare earth elements(...
The solvent extraction of Ln(III) ions from perchlorate aqueous solutions into an organic phase containing neutral polyfunctional organophosphorus ligands R2P(O)CH2OCH2C(O)NBu2 R = Bu (I), R = Ph (II) and R2P(O)CH2OCH2P(O)R¹2 R = R¹ = Bu (III); R = Bu, R¹ = Ph (IV); R = R¹ = Ph(V) has been studied. Their extraction behavior was compared with that o...
In the present work, major and trace element concentrations in suspensions of volcanic ash nanoparticles were determined by ICP-MS after either the acid digestion of the suspensions or the direct analysis of these suspensions. The results obtained were compared. Since the acid digestion can be accompanied by an important dilution or can consist in...
The extraction of microamounts of REE(III), U(VI), and Th(IV) from perchlorate solutions with solutions of tetraphenyl(o-oxyphenylenemethylene)diphosphine dioxide (I) in 1,2-dichloroethane was studied. The stoichiometry of the extractable complexes was determined, and the influence of the aqueous phase composition on the efficiency and selectivity...
Extraction of rare earth element(III) (REE) ions from chloride solutions with mixtures of 1-phenyl-3-methyl-4-benzoyl-5-pyrazolone and 2-phosphorylphenoxyacetamides in organic solvents has been studied. Observed considerable synergic effect is related to the formation of hydrophobic mixed-ligand REE(III) complexes. The stoichiometry of extracted co...
A procedure is developed for the direct determination of all rare-earth and a number of accompanying elements in niobium−rare-earth ores by inductively coupled plasma atomic emission spectrometry after sample decomposition by fusion and further disolution. Because of the complex elemental composition of the samples, numerous mutual overlapping of s...
The role of rare earth elements (REEs) in soil-plant systems has attracted increasing attention but still remains somewhat unclear. Along in vivo studies on the uptake of REEs by plants, in vitro chemical fractionation of REEs in soil according to their physicochemical mobility can offer additional insights into the behaviour of REEs. In the presen...
Extraction of rare earth element(III) (REE) ions from chloride solutions with picrolonic acid mixtures with phosphoryl-substituted aza podands in chloroform has been studied. A considerable synergetic effect observed has been caused by the formation of hydrophobic mixed-ligand complexes of REE. The stoichiometry of extracted complexes has been dete...
The effect of laser radiation parameters on the sensitivity and relative sensitivity coefficients of element determination in the analysis of various materials by inductively coupled plasma mass spectrometry in combination with laser ablation is studied. It is found that, when the power density of laser radiation is increased above 2 × 10¹⁰ W/cm² f...
The influence of the lead content in the K2O–PbO–SiO2 system on the color of glass caused by the plasmon resonance of gold nanoparticles is discussed. It is shown that in glass with a high lead content a longer time of secondary heat treatment (striking) and high temperature affect the hypsochromic shift of the plasmon frequency in UV-vis spectra,...
The extraction of REE(III), U(VI), and Th(IV) from nitric acid solutions with solutions of carbamoylmethylphosphine oxides (CMPOs) considerably increases in the presence of dinonylnaphthalenesulfonic acid. The stoichiometry of the extractable complexes was determined, and the influence of the aqueous phase composition, kind of organic diluent, and...
A comprehensive approach has been developed to the assessment of composition and properties of atmospherically deposited dust in the area affected by a copper smelter. The approach is based on the analysis of initial dust samples, dynamic leaching of water soluble fractions in a rotating coiled column (RCC) followed by the determination of recovere...
Road-deposited sediments (RDS) present a sink for traffic-related pollutants including heavy metals (HMs). HMs associated with RDS particles enter the urban aquatic environment during rainfall events and have adverse effects for biota. RDS nanoscale particles (NSPs) require special consideration due to their specific properties, extremely high mobi...
The extraction of microamounts of U(VI), Th(IV), and REE(III) from HNO3 solutions in the form of complexes with 2,6-bis(diphenylphosphorylmethyl)pyridine N-oxide (I) was studied in relation to the kind of organic diluent and to the HNO3 concentration in the equilibrium aqueous phase. The stoichiometry of the extractable complexes was determined. Wi...
This is the first study of a crystal glass composition, as well as its thermal and spectral (Raman spectra and fluorescence) characteristics, produced at the Gus-Khrustalnyi factory in the middle of the 19th century. The sample studied is a potassium-calcium glass with a low lead content. The formula for such a composition was first developed in Ce...
To determine the composition of niobium–rare-earth ores by atomic emission spectrometry and inductively coupled plasma mass spectrometry, two procedures are developed for sample preparation based on autoclave decomposition and flux fusion. Autoclave decomposition is carried out in a mixture of HF and HNO3 at a temperature of up to 220°C and a press...
The distribution of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y between aqueous HCl solutions and solutions of carbamoyl methyl phosphine oxides (CMPOs) has been studied in the presence of the 1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide ionic liquid (IL). The efficiency and selectivity of REE(III) extraction by...
Extraction of microamounts of REE(III), U(VI), and Th(IV) with solutions of carbamoylmethylphosphine oxides (CMPOs) in organic diluents from aqueous HNO3 solutions containing lithium bis[(trifluoromethyl) sulfonyl]imide (LiTf2N) was studied. The efficiency of the REE(III), U(VI), and Th(IV) extraction from nitric acid solutions with CMPO solutions...
Heavy metals in contaminated ore processing areas present a risk of contamination of waters and life. Therefore, the most mobile fractions of metals, which can be evaluated by chemical extraction, require a special research attention. Classical reports using batchwise extraction methods are debatable in terms of real metal availability because natu...
At present, there is concern about engineered nanoparticles in the environment, whereas natural nanoparticles (NPs) and their impact are often neglected. In our paper, we demonstrate the important role of nanoparticles of volcanic ash in transport of toxic elements on a global scale. A single volcanic eruption can eject millions of tons of ash. NPs...
Extraction of Ln(III), Sc(III), Ga(III), and Re(VII) ions by solutions of phosphorylated monopodands having [ortho-(diphenylphosphinylmethyl)-para-methyl]phenyl terminal groups, 2-Ph2P(O)CH2(4-Me)C6H3(OCH2CH2)n OC6H3(Me-4)CH2P(O)Ph2-2 (n = 1–5), in organic solvents has been studied. The stoichiometries of extractable complexes were determined. The...
Two procedures of acid digestion in an open system and in autoclaves are developed for routine ICP-AES and ICP-MS analysis of rocks, soils, grounds, and sediments. Proposed is a technique based on the use of stable highly enriched isotopes produced in Russia which enables the control (although with certain limitations) over the digestion procedure...
A comparative study of the batch and dynamic extraction methods used to evaluate the physicochemical “mobility” of element species in environmental samples was carried out using samples of contaminated soils and technogenic sands of the Dzhida Tungsten–Molybdenum Factory. In determining the total concentration of mobile species of Cu, Zn, Pb, Cd, M...
Interfacial distribution of micro amount of ReO4⁻ between aqueous solutions of mineral acids and solutions of 2-phosphorylphenoxyacetamides in dichloroethane has been studied. Stoichiometry of extracted complexes has been determined; the effect of HNO3, HCl, and H2SO4 concentration in aqueous phase, extractant structure, and organic solvent nature...
Extraction of microamounts of REE(III), U(VI), and Th(IV) from HClO4 solutions with solutions of N,N,N′,N′-tetrabutyl-2-(di-p-anisylphosphinoyl)butanediamide (I) in organic diluents was studied. The stoichiometry of the extractable complexes was determined, and the effect of the organic diluent and aqueous phase composition on the efficiency and se...
Nanoparticles are capable of preconcentrating various elements, including toxic ones; they have high mobility in the environment and can easily penetrate into a human body. The study of the chemical composition and properties of road dust nanoparticles is an urgent task of analytical chemistry, which needs to be addressed in the monitoring of the a...
A methodology for separation, characterization, and quantitative elemental analysis of volcanic ash nanoparticles is proposed. A combination of field-flow fractionation in a rotating coiled column and membrane filtration is used in the isolation and separation of nanoparticles. The size and morphology of nanoparticles were studied by static light s...
The solvent extraction of lanthanides(III) from hydrochloric acid solutions into the organic phase containing neutral bidentate extractant tetraphenylmethylenediphosphine dioxide (L) and picrolonic acid (HP) has been studied. A considerable synergistic effect was observed in the presence of HP in the organic phase containing neutral bidentate organ...
A comprehensive approach has been developed to the assessment of composition and properties of atmospherically deposited dust in the area affected by a copper smelter. The approach is based on the analysis of initial dust samples, dynamic leaching of water soluble fractions in a rotating coiled column (RCC) followed by the determination of recovere...
The major problems in the analysis of various natural and potable waters by the method of inductively coupled plasma mass spectrometry (sampling, matrix effects, and spectral interferences) are studied; recommendations for addressing them are given. New data on the use of robust conditions for spectrometer settings to increase its tolerance to matr...
A combined approach to the analysis of volcanic ash (VA) was proposed. Ash particles were separated by size using a combination of vibration sieving on sieves (140, 70, 40 μm) and field-flow fractionation in a rotating coiled column (for separation of nano- and submicron particles). Initial samples and obtained fractions were characterized using sc...
Extraction of micro amounts of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y with solutions of 2-[2'-(methoxydiphenylphosphoryl)phenyldiazenyl]-4-tert-butylphenol in 1,2-dichloroethane in the presence of 1-butyl-3-methylimidazolium and trioctylmethylammonium picrates has been studied. The stoichiometry of extracted complexes has bee...
Interfacial distribution of La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Y between aqueous solutions of their salts and solutions of functionalized ionic liquid, 1,11-bis(1-methylimidazol-3-yl)-3,6,9-trioxaundecane bis(hexafluorophosphate) has been studied. The stoichiometry of extracted complexes has been determined, the effect of H...
Bis(carbamoylmethylphosphine oxide) ligands fixed on the arene core via 1,2,3-triazole linkers: Novel effective extractants for palladium, lanthanides and actinides
All authors
E. V. Sharova, G. K. Genkina, O. I. Artyushin, N. M. Vinogradova, A. N. Turanov & V. K. Karandashev
https://doi.org/10.1080/10426507.2016.1213256
Published online
03 Augus...
Phosphorylation of natural products—Cytisine, anabasine, and camphor using click chemistry methodology
All authors
E. V. Sharova, G. K. Genkina, N. M. Vinogradova, O. I. Artyushin, O. I. Yarovaya & V. K. Brel
https://doi.org/10.1080/10426507.2016.1213257
Published online
02 August 2016
The extraction of microamounts of U(VI), Th(IV), and REE(III) from HNO3 and NH4NO3 solutions with solutions of diaryl(dialkylcarbamoylalkyl)phosphine oxides containing a dialkylcarbamoylmethyl substituent in the alkylene bridge was studied. The stoichiometry of the complexes extracted from nitric acid solutions with N,N,N',N'-tetrabutyl-2-(di-p-ani...
In this paper, we present the results of experimental studies on the influence of different magnesium isotopes, the magnetic 25Mg and nonmagnetic 24Mg and 26Mg on ATP activity of the isolated myosin subfragment-1. The reaction rate in the presence of magetic 25Mg isotope turned out to be 2.0-2.5 times higher than that using nonmagnetic 24Mg and 2 M...
The distribution of Y, La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, and Sc between aqueous solutions of their salts and solutions of 2-phosphorylphenoxy acid amides in dichloroethane containing an ionic liquid (1-butyl-3-methylimidazolium bis[(trifluoromethyl)sulfonyl]imide) have been studied. Metal ion extraction has been found to incre...
A procedure for analysis of a-alumina (sapphire, corundum, etc.) samples by mass spectrometry with inductively coupled plasma and laser ablation (LA-ICP-MS) is described. This procedure allows one to determine up to 60 impurity elements with detection limits of 10-7-10-4 wt %. The validity of the results of LA-ICP-MS determination is verified by co...
The properties of a Diasorb-130-IDK sorbent based on silica gel with a grain size of about 6 µm were studied in order to choose conditions for the separation of the rare-earth elements from the samples of natural wine and their subsequent determination by inductively coupled plasma mass spectrometry. The possibility of the quantitative separation o...
The article discusses the application of a collision/reaction cell for suppression of oxide, hydroxide, and hydride spectral aliases occurring during ICP-MS analysis of Nd, Sm, Eu, Gd, Dy, and Er. The influence of the parameters of cell operation on the degree of interference suppression is studied. The application of the collision/reaction cell ma...
The extraction of microamounts of U(VI), Th(IV), and rare earth elements(III) [REE(III)] from HNO3 solutions with solutions of 4,4-bis(diphenylphosphoryl)butan-2-one in dichloroethane was studied. The stoichiometry of the extractable complexes was determined, and the influence of the extractant structure, kind of organic diluent, and aqueous phase...
Abstract Extraction of micro quantities of rare-earth elements(III) from HNO3 solutions as complexes with bis(diarylphosphorylmethyl)benzenes depending on the nature of organic diluent and HNO3 concentration in equilibrium aqueous phase was studied, the stoichiometry of extracted complexes was determined. The effect of structure of a bridge between...
The extraction of microquantities of U(VI), Th(IV), and lanthanides(III) from nitric acid solutions with CMPO-functionalized ionic liquid 1-[3[[(diphenylphosphinyl)acetyl]amino]propyl]-3-tetradecyl-1H-imidazol-3-ium hexafluorophosphate, CMPO-FIL(I) in molecular organic diluents has been studied. The effect of HNO3 concentration in the aqueous phase...
A series of phosphoryl podands of acid type, differing in the length of the polyether chain and structure of the terminal group, were synthesized. The compounds obtained were tested as complexing components of impregnation-type sorbents. The regular trends of the Mo sorption from model solutions of ammonium molybdate in HNO3 in relation to the qual...
Sorption of microamounts of rare earth elements(III) from HNO3 solutions with complexing sorbents prepared by noncovalent immobilization of diphenyl(dibutylcarbamoylmethyl)phosphine oxide and an ionic liquid, 1-methyl-3-butylimidazolium bis[(trifluoromethyl)sulfonyl]imide, on the surface of carbon nanotubes was studied in relation to the component...
Interphase distribution of micro amounts of ReO
4
−
between aqueous solutions of mineral acids and solutions of phosphoryl-containing mono-, di-, and tripodands, derived from 1-(methoxydiphenylphosphoryl)-2-diphenylphosphorylbenzene in dichloroethane was studied. The stoichiometry of extracted complexes was determined, the effect of HNO3, HCl, and...
The possibilities of determining the impurities and basic components of lanthanum gallium silicate using laser ablation in combination with inductively coupled plasma mass spectrometry (LA-ICP-MS) were shown. A procedure for the determination of 54 impurity elements with the limits of determination from n × 10−5 wt % for Mg, Ti, V, Cr, Mn, Ni, Cu,...
A solid-phase composite material based on multi-walled carbon nanotubes and an ionic liquid (1-butyl-3-methylimidazolium hexafluorophosphate) has been synthesized. It has been found using infrared spectroscopy that vibrational modes of the ionic liquid are shifted by 4–12 cm−1 toward lower energies with respect to those observed in the initial flui...